Exhibit 1.1

                               WIDERTHAN CO., LTD.




                      6,000,000 AMERICAN DEPOSITARY SHARES



                  REPRESENTING 6,000,000 SHARES OF COMMON STOCK



                          (PAR VALUE WON 500 PER SHARE)







                             UNDERWRITING AGREEMENT









                             DATED ___________, 2005






                               WiderThan Co., Ltd.



                      6,000,000 American Depositary Shares
          representing an aggregate of 6,000,000 shares of Common Stock



                             Underwriting Agreement

                                                                    ______, 2005

J.P. Morgan Securities Inc.
277 Park Avenue
New York, New York  10172

Merrill Lynch, Pierce, Fenner & Smith Incorporated
4 World Financial Center
250 Vesey Street
New York, New York 10080

As Representatives of the
several Underwriters listed
in Schedule I hereto

Ladies and Gentlemen:


         WiderThan Co., Ltd. (the "COMPANY"), a company incorporated with
limited liability in The Republic of Korea ("KOREA"), proposes to issue and sell
to the several Underwriters listed in Schedule I hereto (the "UNDERWRITERS"),
for whom you are acting as representatives (the "REPRESENTATIVES"), an aggregate
of 4,000,000 American Depositary Shares (the "INITIAL ADSs"), representing the
right to receive an aggregate of 4,000,000 shares (the "INITIAL SHARES") of the
Company's common shares, par value Won 500 per share ("COMMON STOCK") and, each
of the Selling Shareholders named in Schedule II hereto (the "SELLING
SHAREHOLDERS"), severally and not jointly, proposes to sell to the several
Underwriters an aggregate of 2,000,000 Initial ADSs, representing the right to
receive an aggregate of 2,000,000 Initial Shares. In addition, the Company also
propose to grant to the Underwriters, an option to purchase up to an additional

                                       1


900,000 American Depositary Shares (the "OPTION ADSs") representing the right to
receive an aggregate of 900,000 shares of Common Stock (the "OPTION SHARES").
The Initial ADSs and the Option ADSs are herein referred to as the "ADSs" and
the Initial Shares and the Option Shares are herein referred to as the "SHARES".
The ADSs are to be issued pursuant to a deposit agreement (the "DEPOSIT
AGREEMENT") to be dated as of ________, 2005 among the Company, JPMorgan Chase
Bank, N.A., as Depositary (the "DEPOSITARY"), and the holders from time to time
of the American Depositary Receipts (the "ADRs") issued by the Depositary and
evidencing the ADSs. Each ADS will initially represent the right to receive one
share of Common Stock deposited pursuant to the Deposit Agreement. The Shares in
respect of the ADSs to be delivered on the Initial Closing Date or the
Additional Closing Date (each as hereinafter defined) are to be deposited with
the Korea Securities Depository for the account and benefit of the Depositary
prior to the Initial Closing Date or the Additional Closing Date, as the case
may be, against issuance of ADRs evidencing such ADSs.

         The Company, the Selling Shareholders and the several Underwriters
hereby confirm their agreement concerning the purchase and sale of the ADSs, as
follows:

         1. Registration Statement. The Company has prepared and filed with the
Securities and Exchange Commission (the "COMMISSION") under the Securities Act
of 1933, as amended, and the rules and regulations of the Commission thereunder
(collectively, the "SECURITIES ACT"), a registration statement on Form F-1 (File
No.___________) including a prospectus, relating to the Shares. Such
registration statement, as amended at the time it becomes effective, including
the information, if any, deemed pursuant to Rule 430A under the Securities Act
to be part of the registration statement at the time of its effectiveness ("RULE
430A INFORMATION"), is referred to herein as the "REGISTRATION STATEMENT"; and
as used herein, the term "PRELIMINARY PROSPECTUS" means each prospectus included
in such registration statement (and any amendments thereto) before it becomes
effective, any prospectus filed with the Commission pursuant to Rule 424(a)
under the Securities Act and the prospectus included in the Registration
Statement at the time of its effectiveness that omits Rule 430A Information, and
the term "Prospectus" means the prospectus in the form first used to confirm
sales of the Shares. If the Company has filed an abbreviated registration
statement pursuant to Rule 462(b) under the Securities Act (the "RULE 462
REGISTRATION STATEMENT"), then any reference herein to the term "REGISTRATION
STATEMENT" shall be deemed to include such Rule 462 Registration Statement.
Capitalized terms used but not defined herein shall have the meanings given to
such terms in the Registration Statement and the Prospectus. For purposes of
this Agreement, all references to the Registration Statement, any Preliminary
Prospectus, or any amendment or supplement to any of the foregoing shall be
deemed to include the copy filed with the Commission pursuant to its Electronic
Data Gathering, Analysis and Retrieval system ("EDGAR").

         2. Purchase of the ADSs by the Underwriters.

                  (a) The Company agrees to issue the Shares and sell Initial
         ADSs to the several Underwriters as provided in this Agreement, and
         each Underwriter, on the basis of the representations, warranties and
         agreements set forth herein and subject to the conditions set forth
         herein, agrees, severally and not jointly, to purchase from the Company
         the number of Initial ADSs set forth opposite such Underwriter's name
         in

                                       2


         Schedule I hereto at an initial public offering price of US$ _____ per
         ADS (the "OFFERING PRICE").

                  Each Selling Shareholder agrees, severally and not jointly, to
         sell Initial ADSs to the several Underwriters as provided in this
         Agreement, and each Underwriter, on the basis of the representations,
         warranties and agreements set forth herein and subject to the
         conditions set forth herein, agrees, severally and not jointly, to
         purchase from each such Selling Shareholder, the number of Initial ADSs
         set forth opposite the name of such Underwriter in Schedule I hereto,
         at a purchase price of US$____ per ADS (constituting the Offering Price
         less Underwriting Commission (as defined below))(the "PURCHASE PRICE").

                  As compensation to the Underwriters for their commitments
         hereunder, the Company will pay, or cause to be paid, to the
         Underwriters, at each Closing Date (as hereinafter defined), an
         underwriting commission of _______ per ADS (the "Underwriting
         Commission") for each of the ADSs to be purchased, at such Closing
         Date, as provided in this Agreement.

                  In addition, the Company agrees to issue the Option Shares and
         sell the Option ADSs to the several Underwriters as provided in this
         Agreement, and the Underwriters, on the basis of the representations,
         warranties and agreements set forth herein and subject to the
         conditions set forth herein, shall have the option to purchase,
         severally and not jointly, from the Company, the Option ADSs at the
         Offering Price.

                  If any Option ADSs are to be purchased, the number of Option
         ADSs to be purchased by each Underwriter shall be the number of Option
         ADSs which bears the same ratio to the aggregate number of Option ADSs
         being purchased as the number of Initial ADSs set forth opposite the
         name of such Underwriter in Schedule I hereto (or such number increased
         as set forth in Section 11 hereof) bears to the aggregate number of
         Initial ADSs being purchased from the Company and the Selling
         Shareholders by the several Underwriters, subject, however, to such
         adjustments to eliminate any fractional ADSs as the Representatives in
         their sole discretion shall make.

                  The Underwriters may exercise the option to purchase the
         Option ADSs at any time in whole or in part from time to time on or
         before the thirtieth day following the date of this Agreement, by
         written notice from the Representatives to the Company. Such notice
         shall set forth the aggregate number of Option ADSs as to which the
         option is being exercised and the date and time when the Option ADSs
         are to be delivered and paid for which may be the same date and time as
         the Closing Date (as hereinafter defined) but shall not be earlier than
         the Closing Date nor later than the seventh full Business Day (as
         hereinafter defined) after the date of such notice (unless such time
         and date are postponed in accordance with the provisions of Section 11
         hereof). Any such notice shall be given at least two Business Days (as
         hereinafter defined) prior to the date and time of delivery specified
         therein.


                                       3


                  (b) The Company and the Selling Shareholders understand that
         the Underwriters intend to make a public offering of the ADSs as soon
         after the effectiveness of this Agreement as in the judgment of the
         Representatives is advisable, and initially to offer the ADSs on the
         terms set forth in the Prospectus. The Company and the Selling
         Shareholders acknowledge and agree that the Underwriters may offer and
         sell ADSs to or through any affiliate of an Underwriter and that any
         such affiliate may offer and sell ADSs purchased by it to or through
         any Underwriter.

                  (c) The time and date of (i) payment shall be immediately
         prior to 11:00 a.m., New York City time, on ______________, 2005 (which
         shall be on __________, 2005, Seoul time) and (ii) delivery shall be
         immediately after 11:00 a.m., New York City time, on _______________,
         2005 (which shall be on __________, 2005, Seoul time) or, in each case
         of (i) and (ii), at the same time on the same or such other date, not
         later than the fifth Business Day thereafter, as the Representative,
         Company and the Selling Shareholders may agree upon in writing (or, in
         the case of the Option ADSs, on the date and at the time specified by
         the Representatives in the written notice of the Underwriters' election
         to purchase such Option ADSs). The time and date of such delivery of
         the Initial ADSs is referred to herein as the "INITIAL CLOSING DATE"
         and the time and date for such delivery of the Option ADSs, if other
         than the Closing Date, is herein referred to as the "ADDITIONAL CLOSING
         DATE", and each such time and date of delivery is herein referred to as
         the "CLOSING DATE".

                  (d) The Initial ADSs and the Option ADSs to be purchased by
         each Underwriter, in such form and denominations and registered in such
         names as the Representatives shall request in writing not later than
         forty-eight hours prior to the Initial Closing Date or the Additional
         Closing Date, as the case may be, shall be delivered by or on behalf of
         the Company to the Representatives for the respective accounts of such
         Underwriters, immediately following or upon payment by such
         Underwriters pursuant to Section 2(c) hereof.

                  (e) Each of the Company and the Selling Shareholders
         acknowledges and agrees that the Underwriters are acting solely in the
         capacity of an arm's length contractual counterparty to the Company and
         the Selling Shareholders with respect to the offering of Shares
         contemplated hereby (including in connection with determining the terms
         of the offering) and not as a financial advisor or a fiduciary to, or
         an agent of, the Company, the Selling Shareholders, creditors,
         employees or any other person. Additionally, neither the Representative
         nor any other Underwriter is advising the Company, the Selling
         Shareholders or any other person as to any legal, tax, investment,
         accounting or regulatory matters in any jurisdiction. The Company and
         the Selling Shareholders shall consult with their own advisors
         concerning such matters and shall be responsible for making their own
         independent investigation and appraisal of the transactions
         contemplated hereby, and the Underwriters shall have no responsibility
         or liability to the Company or the Selling Shareholders with respect
         thereto. Any review by the Underwriters of the Company, the
         transactions contemplated hereby or other matters


                                       4


         relating to such transactions will be performed solely for the benefit
         of the Underwriters and shall not be on behalf of the Company or the
         Selling Shareholders.

         3. Representations and Warranties.

                  (a) Representations and Warranties by the Company. The Company
         represents and warrants to each Underwriter and each Selling
         Shareholder as of the date hereof and as of each Closing Date, as
         applicable, and agrees with each Underwriter and each Selling
         Shareholder, as follows:

                           (i) Preliminary Prospectus. No order preventing or
                  suspending the use of any Preliminary Prospectus has been
                  issued by the Commission, and each Preliminary Prospectus, at
                  the time of filing thereof, complied in all material respects
                  with the Securities Act and did not contain any untrue
                  statement of a material fact or omit to state a material fact
                  required to be stated therein or necessary in order to make
                  the statements therein, in the light of the circumstances
                  under which they were made, not misleading; provided that the
                  Company makes no representation and warranty with respect to
                  any statements or omissions made in reliance upon and in
                  conformity with information relating to any Underwriter
                  furnished to the Company in writing by such Underwriter
                  through the Representatives expressly for use in any
                  Preliminary Prospectus.

                           (ii) Registration Statement and Prospectus. The
                  Registration Statement and any post-effective amendment
                  thereto has become effective under the Securities Act and no
                  order suspending the effectiveness of the Registration
                  Statement or any post-effective amendment thereto has been
                  issued by the Commission and no proceeding for that purpose
                  has been initiated or is pending or threatened by the
                  Commission and any request on the part of the Commission for
                  additional information has been complied with.

                           At the respective times the Registration Statement
                  and any post-effective amendments thereto became effective and
                  at the Closing Date (and, if any Option Shares are purchased,
                  at the Additional Closing Date), the Registration Statement
                  and any amendments and supplements thereto complied and will
                  comply in all material respects with the requirements of the
                  Securities Act and the Securities Act Regulations and did not
                  and will not contain an untrue statement of a material fact or
                  omit to state a material fact required to be stated therein or
                  necessary to make the statements therein not misleading.
                  Neither the Prospectus nor any amendments or supplements
                  thereto, at the time the Prospectus or any amendments or
                  supplements thereto were issued and at the Closing Date (and,
                  if any Option Shares are purchased, at the Additional Closing
                  Date), included or will include an untrue statement of a
                  material fact or omitted or will omit to state a material fact
                  necessary in order to make the statements therein, in the
                  light of the circumstances under which they were made, not
                  misleading; provided that the Company makes no representation
                  and warranty with respect to any statements or omissions made
                  in reliance upon and in conformity with information relating
                  to any Underwriter

                                       5


                  furnished to the Company in writing by such Underwriter
                  through the Representatives expressly for use in the
                  Registration Statement and the Prospectus and any amendment or
                  supplement thereto.

                           Each Preliminary Prospectus and the Prospectus filed
                  as part of the Registration Statement as originally filed or
                  as part of any amendment thereto complied when so filed in all
                  material respects with the Securities Act Regulations and each
                  Preliminary Prospectus and the Prospectus delivered to the
                  Underwriters for use in connection with this offering was
                  identical in substance to the electronically transmitted
                  copies thereof filed with the Commission pursuant to EDGAR,
                  except to the extent permitted by Regulation S-T.

                           (iii) ADS Registration Statement. A registration
                  statement on Form F-6 (File No._____________) has been filed
                  with the Commission; such registration statement has been
                  declared effective by the Commission (such registration
                  statement, as amended at the time it became effective, being
                  hereinafter called the "ADS REGISTRATION STATEMENT"; no stop
                  order suspending the effectiveness of the ADS Registration
                  Statement has been issued by the Commission and no proceeding
                  for that purpose has been initiated or threatened by the
                  Commission; as of the applicable effective date of the ADS
                  Registration Statement and any amendment thereto, if
                  applicable, the ADS Registration Statement complied or will
                  comply in all material respects with the Securities Act, and
                  did not and will not contain any untrue statement of a
                  material fact or omit to state a material fact required to be
                  stated therein and or necessary in order to make the
                  statements therein not misleading.

                           (iv) Financial Statements of the Company. The audited
                  consolidated annual financial statements, the unaudited
                  consolidated interim financial statements, and the related
                  notes thereto with respect to the Company and, to the extent
                  applicable, its subsidiaries included in the Registration
                  Statement and the Prospectus comply in all material respects
                  with the applicable requirements of the Securities Act and the
                  Securities Exchange Act of 1934, as amended, and the rules and
                  regulations of the Commission thereunder (collectively, the
                  "EXCHANGE ACT"), as applicable, and present fairly the
                  financial position of the Company and, to the extent
                  applicable, its subsidiaries as of the dates indicated and the
                  results of their operations, stockholders' equity and the
                  changes in their cash flows of the Company and its
                  consolidated subsidiaries for the periods specified; such
                  financial statements have been prepared in conformity with
                  generally accepted accounting principles ("GAAP") in the
                  United States applied on a consistent basis throughout the
                  periods covered thereby; the other financial information
                  included in the Registration Statement and the Prospectus
                  presents fairly the information shown thereby. The selected
                  financial data and the summary financial information included
                  in the Prospectus present fairly the information shown therein
                  and have been compiled on a basis consistent with that of the
                  financial statements included in the Registration Statement.
                  The pro forma financial statements and the related

                                       6


                  notes thereto included in the Registration Statement and the
                  Prospectuses present fairly the information shown therein,
                  have been prepared in accordance with the Commission's rules
                  and guidelines with respect to pro forma financial statements
                  and have been properly compiled on the bases described
                  therein, and the assumptions used in the preparation thereof
                  are reasonable and the adjustments used therein are
                  appropriate to give effect to the transactions and
                  circumstances referred to therein.

                           (v) Financial Statements of WiderThan Americas Inc.
                  The audited consolidated annual financial statements, the
                  unaudited consolidated interim financial statements, and the
                  related notes thereto with respect to WiderThan Americas Inc.
                  ("WIDERTHAN AMERICAS", formerly known as Ztango, Inc.),
                  included in the Registration Statement and the Prospectus
                  comply in all material respects with the applicable
                  requirements of the Securities Act and the Exchange Act, as
                  applicable, and present fairly the financial position of
                  WiderThan Americas and, to the extent applicable, its
                  subsidiaries as of the dates indicated and the results of
                  their operations, stockholders' equity and the changes in
                  their cash flows of WiderThan Americas and its consolidated
                  subsidiaries for the periods specified; such financial
                  statements have been prepared in conformity with GAAP in the
                  United States applied on a consistent basis throughout the
                  periods covered thereby.

                           (vi) No Material Adverse Change. Except as set forth
                  in the Prospectus, since the date of the most recent audited
                  financial statements of the Company included in the
                  Prospectus, (i) there has not been any change in the capital
                  stock or long-term debt of the Company or any of its
                  subsidiaries, or any dividend or distribution of any kind
                  declared, set aside for payment, paid or made by the Company
                  on any class of capital stock, or any change, or any
                  development involving a prospective change, in or affecting
                  the business, properties, management, financial position,
                  stockholders' equity, results of operations or prospects of
                  the Company and its subsidiaries taken as a whole; (ii)
                  neither the Company nor any of its subsidiaries has entered
                  into any transaction or agreement that is material to the
                  Company and its subsidiaries taken as a whole or incurred any
                  liability or obligation, direct or contingent, that is
                  material to the Company and its subsidiaries taken as a whole;
                  and (iii) neither the Company nor any of its subsidiaries has
                  sustained any loss or interference with its business from
                  fire, explosion, flood or other calamity, whether or not
                  covered by insurance, or from any labor disturbance or dispute
                  or any action, order or decree of any court or arbitrator or
                  governmental or regulatory authority, except in each case,
                  where such change, transaction, agreement, liability,
                  obligation, loss or interference would not, individually or in
                  the aggregate, have a material adverse effect on the
                  condition, financial or otherwise, or in the earnings,
                  business affairs or business prospects of the Company and its
                  subsidiaries taken as a whole whether or not arising in the
                  ordinary course of business (a "MATERIAL ADVERSE EFFECT").


                                       7


                           (vii) Organization of the Company. The Company has
                  been duly organized and is validly existing under the laws of
                  the Republic of Korea and has corporate power and authority to
                  own, lease and operate its properties and to conduct its
                  business as described in the Prospectus and to enter into and
                  perform its obligations under this Agreement; and the Company
                  is duly qualified as a foreign corporation to transact
                  business and is in good standing in each other jurisdiction in
                  which such qualification is required, whether by reason of the
                  ownership or leasing of property or the conduct of business,
                  except where the failure so to qualify or to be in good
                  standing would not result in a Material Adverse Effect.

                           (viii) Organization of Subsidiaries. Each subsidiary
                  of the Company (each a "SUBSIDIARY" and, collectively, the
                  "SUBSIDIARIES") has been duly organized and is validly
                  existing as a corporation in good standing under the laws of
                  the jurisdiction of its incorporation, has corporate power and
                  authority to own, lease and operate its properties and to
                  conduct its business as described in the Prospectus and is
                  duly qualified as a foreign corporation to transact business
                  and is in good standing in each jurisdiction in which such
                  qualification is required, whether by reason of the ownership
                  or leasing of property or the conduct of business, except
                  where the failure so to qualify or to be in good standing
                  would not result in a Material Adverse Effect; except as
                  otherwise disclosed in the Prospectus, all of the issued and
                  outstanding capital stock of each such Subsidiary has been
                  duly authorized and validly issued, is fully paid and
                  non-assessable and is owned by the Company, directly or
                  through subsidiaries, free and clear of any security interest,
                  mortgage, pledge, lien, encumbrance, claim or equity; none of
                  the outstanding shares of capital stock of any Subsidiary are
                  subject to the preemptive or similar rights of any
                  securityholder of such Subsidiary. The only subsidiaries of
                  the Company are the subsidiaries listed in Schedule III of
                  this Agreement. Other than WiderThan Americas (the "PRINCIPAL
                  SUBSIDIARY"), no subsidiary listed in Schedule III of this
                  Agreement is a subsidiary whose consolidated assets exceed 5%
                  of the assets of the Company and its consolidated subsidiaries
                  as set forth in the most recent financial statements of the
                  Company included in the Prospectus.

                           (ix) Capitalization. The Company has an authorized
                  capitalization as set forth in the Prospectus under the
                  heading "Capitalization" all the outstanding shares of capital
                  stock of the Company have been duly authorized and validly
                  issued and are fully paid and non-assessable and are not
                  subject to any pre-emptive or similar rights; there are no
                  outstanding rights (including, without limitation, pre-emptive
                  rights), warrants or options to acquire, or instruments
                  convertible into or exchangeable for, any shares of capital
                  stock or other equity interest in the Company or the Principal
                  Subsidiary, or any contract, commitment, agreement,
                  understanding or arrangement of any kind relating to the
                  issuance of any capital stock of the Company or the Principal
                  Subsidiary, any such convertible or exchangeable securities or
                  any such rights, warrants or options, except, in each case, as
                  set forth in the Prospectus; the capital stock of the Company
                  conforms in all material respects to the description thereof
                  contained in the Prospectus; and the

                                       8


                  Company owns the percentage of the capital stock of each such
                  subsidiary set out in Schedule III, free and clear of any
                  lien, charge, encumbrance, security interest, restriction on
                  voting or transfer or any other claim of any third party.

                           (x) Due Authorization. The Company has full right,
                  power and authority to execute and deliver this Agreement and
                  the Deposit Agreement (collectively, the "TRANSACTION
                  DOCUMENTS" and to perform its obligations hereunder and
                  thereunder; all action required to be taken for the due and
                  proper authorization, execution and delivery by it of each of
                  the Transaction Documents and the consummation by it of the
                  transactions contemplated thereby has been duly and validly
                  taken.

                           (xi) Underwriting Agreement. This Agreement has been
                  duly authorized, executed and delivered by the Company.

                           (xii) Deposit Agreement. The Deposit Agreement has
                  been duly authorized, and when executed and delivered by the
                  Company, and, assuming due authorization, execution and
                  delivery by the Depositary, will constitute a valid and
                  legally binding agreement of the Company, enforceable in
                  accordance with its terms, except as enforceability may be
                  limited by (a) applicable bankruptcy, insolvency or similar
                  laws affecting the enforcement of creditors' rights generally
                  or by equitable principles relating to enforceability; and (b)
                  the effect of judicial application of foreign laws or foreign
                  governmental actions affecting creditors' rights. The Deposit
                  Agreement and the ADRs conform in all material respects to the
                  descriptions thereof contained in the Prospectus.

                           (xiii) The Shares. The Shares to be issued and sold
                  by the Company hereunder have been duly authorized by the
                  Company and, when issued and delivered against payment
                  therefor as provided herein, such Shares will be duly and
                  validly issued and will be fully paid and non-assessable and
                  will conform to the descriptions thereof in the Prospectus; no
                  holder of the Shares will be subject to personal liability by
                  reason of being such a holder and the issuance of the Shares
                  is not subject to any preemptive or similar rights.

                           (xiv) The ADSs. The Shares may be freely deposited by
                  the Company with the custodian pursuant to the Deposit
                  Agreement. Upon the due issuance by the Depositary of ADRs
                  evidencing ADSs, such ADRs will be duly and validly issued
                  under the Deposit Agreement and persons in whose names such
                  ADRs are registered will be entitled to the rights of
                  registered holders of ADRs specified therein and in the
                  Deposit Agreement; and the Deposit Agreement and ADSs will
                  conform in all material respects to the description thereof
                  contained in the Prospectus.

                           (xv) Absence of Transfer Restrictions. The Shares and
                  ADSs, when issued, are freely transferable by the Company to
                  or for the account of the several

                                       9


                  Underwriters and are freely transferable by the several
                  Underwriters to the initial purchasers thereof under the laws
                  of Korea except as described in the Prospectus.

                           (xvi) No Violation or Default. Neither the Company
                  nor its Principal Subsidiary is (i) in violation of its
                  articles of incorporation or other organizational documents;
                  (ii) in default, and no event has occurred that, with notice
                  or lapse of time or both, would constitute such a default, in
                  the due performance or observance of any term, covenant or
                  condition contained in any indenture, mortgage, deed of trust,
                  loan or credit agreement, note, lease or other agreement or
                  instrument to which the Company or its Principal Subsidiary is
                  a party or by which the Company or its subsidiaries is bound
                  or to which any of the property or assets of the Company or
                  any of its Principal Subsidiary is subject; or (iii) in
                  violation of any law or statute or any judgment, order, rule
                  or regulation of any court or arbitrator or governmental or
                  regulatory authority having jurisdiction over the Company or
                  its Principal Subsidiary, except, in the case of clauses
                  (ii) and (iii) above, for any such default or violation that
                  would not, individually or in the aggregate, have a Material
                  Adverse Effect.

                           (xvii) No Conflicts. The execution, delivery and
                  performance by the Company of each of the Transaction
                  Documents, the issuance of the Shares, the deposit of the
                  Shares with the Depositary against issuance of the ADRs
                  evidencing the ADSs, the sale by the Company of the ADSs and
                  the consummation of the transactions contemplated by the
                  Transaction Documents do not and will not, (i) conflict with
                  or result in a breach or violation of any of the terms or
                  provisions of, or constitute a default under, or result in the
                  creation or imposition of any tax, lien, charge or encumbrance
                  upon the Shares or ADSs to be sold by the Company or any
                  property or assets of the Company or its Principal Subsidiary
                  pursuant to, any indenture, mortgage, deed of trust, loan
                  agreement or other agreement or instrument to which the
                  Company or its Principal Subsidiary is a party or by which the
                  Company or its Principal Subsidiary is bound or to which any
                  of the property or assets of the Company or its Principal
                  Subsidiary is subject, (ii) result in any violation of the
                  provisions of the articles of incorporation or other
                  organizational documents of the Company or its Principal
                  Subsidiary or (iii) result in the violation of any law or
                  statute or any judgment, order, rule or regulation of any
                  court or arbitrator or governmental or regulatory authority
                  having jurisdiction over the Company or its Principal
                  Subsidiary or any of their properties or assets, except, in
                  the case of clauses (i) and (iii) above, for any such
                  conflict, breach or violation that would not, individually or
                  in the aggregate, have a Material Adverse Effect.

                           (xviii) No Consents Required. Except as described in
                  the Prospectus, no consent, approval, authorization, order,
                  registration or qualification of or with any court or
                  arbitrator or governmental or regulatory authority is required
                  for the execution, delivery and performance by the Company of
                  each of the Transaction Documents, the issuance of the Shares,
                  the deposit of the Shares with the Depositary against issuance
                  of the ADRs evidencing the ADSs, the sale by the

                                       10


                  Company of the ADSs and the consummation of the transactions
                  contemplated by the Transaction Documents, except for (i) the
                  registration of the Shares and the ADSs under the Securities
                  Act, (ii) such consents, approvals, authorizations, orders and
                  registrations or qualifications as may be required under
                  applicable state securities laws in connection with the
                  purchase and distribution of the Shares and the ADSs by the
                  Underwriters, (iii) the filing of a report with the Ministry
                  of Finance and Economy of Korea ("MOFE") in connection with
                  the issuance of the ADSs, which has been made and is in full
                  force and effect and (iv) the registration of the issuance of
                  the Shares with the registry offices of the competent Korean
                  courts having jurisdiction over the Company which is required
                  to be made within two weeks from the issue of the Shares.

                           (xix) Legal Proceedings. Except as described in the
                  Prospectus, there are no legal, governmental or regulatory
                  investigations, actions, suits or proceedings pending to which
                  the Company or the Principal Subsidiary is or may be a party
                  or to which any property of the Company or the Principal
                  Subsidiary is or may be the subject that, individually or in
                  the aggregate, if determined adversely to the Company or the
                  Principal Subsidiary, could reasonably be expected to have a
                  Material Adverse Effect or materially and adversely affect the
                  ability of the Company to perform its obligations under the
                  Transaction Documents; no such investigations, actions, suits
                  or proceedings are threatened or, to the best knowledge of the
                  Company, contemplated by any governmental or regulatory
                  authority or threatened by others.

                           (xx) Accuracy of Exhibits. There are no contracts or
                  other documents that are required under the Securities Act to
                  be filed as exhibits to the Registration Statement or
                  described in the Registration Statement or the Prospectus that
                  are not so filed or described.

                           (xxi) Independent Accountants with respect to the
                  Company. Samil PricewaterhouseCoopers, the Korean member firm
                  of PricewaterhouseCoopers, who audited certain financial
                  statements of the Company and its subsidiaries and provided a
                  "comfort letter" with respect to the financial data of the
                  Company and its subsidiaries, are independent public
                  accountants with respect to the Company and its consolidated
                  subsidiaries as required by the Securities Act.

                           (xxii) Independent Accountants with respect to
                  WiderThan Americas. PricewaterhouseCoopers LLP, who audited
                  certain financial statements of WiderThan Americas, are
                  independent public accountants with respect to WiderThan
                  Americas as required by the Securities Act. Deloitte & Touche
                  LLC, who audited certain financial statements of WiderThan
                  Americas and its consolidated subsidiaries, are independent
                  public accountants with respect to WiderThan Americas as
                  required by the Securities Act.

                           (xxiii) Title to Real and Personal Property. Except
                  as described in the Prospectus, each of the Company and its
                  Principal Subsidiary have good and

                                       11


                  marketable title to, or have valid rights to lease or
                  otherwise use, all items of real and personal property that
                  are material to the respective businesses of the Company and
                  the Principal Subsidiary, in each case free and clear of all
                  liens, encumbrances, claims and defects and imperfections of
                  title except those that do not, singly or in the aggregate,
                  materially interfere with the use made and proposed to be made
                  of such property by the Company or the Principal Subsidiary;
                  and all of the leases and subleases material to the business
                  of the Company and the Principal Subsidiary, considered as one
                  enterprise, and under which the Company or the Principal
                  Subsidiary holds properties described in the Prospectus, are
                  in full force and effect, and neither the Company nor the
                  Principal Subsidiary has any notice of any material claim of
                  any sort that has been asserted by anyone adverse to the
                  rights of the Company or the Principal Subsidiary under any of
                  the leases or subleases mentioned above, or affecting or
                  questioning the rights of the Company or the Principal
                  Subsidiary to the continued possession of the leased or
                  subleased premises under any such lease or sublease.

                           (xxiv) Title to Intellectual Property. Except as
                  described in the Prospectus, the Company and its Principal
                  Subsidiary own, are licensed or possess adequate rights to use
                  all material patents, patent applications, trademarks, service
                  marks, trade names, trademark registrations, service mark
                  registrations, copyrights, licenses, know-how or other
                  intellectual property (including trade secrets and other
                  unpatented and/or unpatentable proprietary or confidential
                  information, systems or procedures) (collectively,
                  "INTELLECTUAL PROPERTY") necessary for the conduct of their
                  respective businesses; and the conduct of their respective
                  businesses will not conflict in any material respect with any
                  such rights of others, and the Company and its Principal
                  Subsidiary have not received any notice of any claim of
                  infringement or conflict with any such rights of others with
                  respect to any Intellectual Property or of any facts or
                  circumstances which would render any Intellectual Property
                  invalid or inadequate to protect the interest of the Company
                  or its Principal Subsidiary therein except those that (i) do
                  not materially interfere with the use made and proposed to be
                  made of such Intellectual Property by the Company and its
                  Principal Subsidiary or (ii) could not reasonably be expected,
                  individually or in the aggregate, to have a Material Adverse
                  Effect.

                           (xxv) No Undisclosed Relationships. Except as
                  described in the Prospectus, no relationship, direct or
                  indirect, exists between or among the Company or any of its
                  subsidiaries, on the one hand, and the directors, officers,
                  stockholders, customers or suppliers of the Company or any of
                  its subsidiaries, on the other, that is required by the
                  Securities Act to be described in the Registration Statement
                  and the Prospectus that is not so described.

                           (xxvi) Investment Company Act. The Company is not
                  and, after giving effect to the issuance of the Shares and the
                  offering and sale of the ADSs and the application of the
                  proceeds thereof as described in the Prospectus, will not be
                  an "investment company" within the meaning of the Investment
                  Company Act of

                                       12


                  1940, as amended, and the rules and regulations of the
                  Commission thereunder (collectively, "INVESTMENT COMPANY
                  ACT").

                           (xxvii) Taxes. The Company has paid all taxes and
                  filed all tax returns required to be paid or filed through the
                  date hereof or has duly requested extensions; provided, with
                  respect to payment of taxes, except for such taxes, if any,
                  that are being contested in good faith and as to which
                  adequate reserves have been provided and, with respect to the
                  filings of returns, except insofar as the failure to file such
                  returns would not have a Material Adverse Effect.

                           (xxviii) Passive Foreign Investment Company. Based on
                  the composition of its income and valuation of its assets,
                  including goodwill, the Company does not believe it currently
                  is, or that it was in 2004, a Passive Foreign Investment
                  Company ("PFIC") within the meaning of Section 1297 of the
                  U.S. Internal Revenue Code of 1986, as amended, and does not
                  expect to become a PFIC in 2005 and in the near future.

                           (xxix) Licenses and Permits. The Company and the
                  Principal Subsidiary possess all licenses, certificates,
                  permits and other authorizations (collectively, "Governmental
                  Licenses") issued by, and have made all declarations and
                  filings with, the appropriate governmental or regulatory
                  authorities that are necessary for the ownership or lease of
                  their respective properties or the conduct of their respective
                  businesses as described in the Prospectus, except where the
                  failure to possess or make the same would not, individually or
                  in the aggregate, have a Material Adverse Effect; the Company
                  and the Principal Subsidiary are in compliance with the terms
                  and conditions of all such Governmental Licenses, except where
                  the failure so to comply would not, singly or in the
                  aggregate, result in a Material Adverse Effect; and except as
                  described in the Prospectus, neither the Company nor the
                  Principal Subsidiary has received notice of any revocation or
                  modification of any such Governmental Licenses or has any
                  reason to believe that any such license, certificate, permit
                  or authorization will not be renewed in the ordinary course.

                           (xxx) No Labor Disputes. No labor dispute with the
                  employees of the Company or its Principal Subsidiary exists
                  or, to the knowledge of the Company, is imminent, which, in
                  either case, would result in a Material Adverse Effect.

                           (xxxi) Accounting Controls. The Company and its
                  subsidiaries maintain systems of internal accounting controls
                  sufficient to provide reasonable assurance that (i)
                  transactions are executed in accordance with management's
                  general or specific authorizations; (ii) transactions are
                  recorded as necessary to permit preparation of financial
                  statements in conformity with generally accepted accounting
                  principles in the United States and to maintain asset
                  accountability; (iii) access to assets is permitted only in
                  accordance with management's general or specific
                  authorization; and (iv) the recorded accountability for assets
                  is compared

                                       13


                  with the existing assets at reasonable intervals and
                  appropriate action is taken with respect to any differences.

                           (xxxii) Material Weaknesses. Except as described in
                  the Prospectus, since the end of the Company's most recent
                  audited fiscal year, there has been (i) no material weakness
                  in the Company's internal control over financial reporting
                  (whether or not remediated) and (ii) no change in the
                  Company's internal control over financial reporting that has
                  materially and adversely affected, or is reasonably likely to
                  materially and adversely affect, the Company's internal
                  control over financial reporting.

                           (xxxiii) No Broker's Fees. Neither the Company nor
                  any of its subsidiaries is a party to any contract, agreement
                  or understanding with any person (other than this Agreement)
                  that would give rise to a valid claim against the Company or
                  any Underwriter for a brokerage commission, finder's fee or
                  like payment in connection with the offering and sale of the
                  ADSs.

                           (xxxiv) No Registration Rights. Except as described
                  in the Prospectus, no person has the right to require the
                  Company to register any securities for sale under the
                  Securities Act by reason of the filing of the Registration
                  Statement with the Commission or the issuance of the Shares or
                  the sale of the ADSs.

                           (xxxv) Absence of Manipulation. The Company has not
                  taken, and will not take, directly or indirectly, any action
                  which is designed to or which has constituted or which would
                  be expected to cause or result in any stabilization or
                  manipulation of the price of the Shares or the ADSs in
                  violation of the Exchange Act or the applicable Korean laws.

                           (xxxvi) Statistical and Market Data. Nothing has come
                  to the attention of the Company that has caused the Company to
                  believe that the statistical and market-related data included
                  in the Prospectus is not based on or derived from sources that
                  are reliable and accurate in all material respects.

                           (xxxvii) Arm's-Length Transactions. Except as
                  described in the Prospectus, none of the Company or any of its
                  subsidiaries is engaged in any material transactions with its
                  directors, officers, management, shareholders, or any other
                  person, including persons formerly holding such positions, on
                  terms that are not available from other parties on an
                  arm's-length basis.

                           (xxxviii) No Unlawful Payments. None of the Company,
                  any of the Company's subsidiaries or, to the best of the
                  Company's knowledge, any director, officer, agent, employee or
                  other person associated with, or acting on behalf of, the
                  Company or any of the Company's subsidiaries has (A) used any
                  corporate funds for any unlawful contribution, gift,
                  entertainment of unlawful expense relating to political
                  activity, (B) made any direct or indirect unlawful payment to
                  any foreign or domestic government official or employee from
                  corporate funds, (C) violated

                                       14


                  any provision of the U.S. Foreign Corrupt Practices Act or any
                  similar law or regulation of any other jurisdiction, or (D)
                  paid any bribe, rebate, pay-off, influence payment, kick-back
                  or other unlawful payment.

                           (xxxix) Critical Accounting Policies. The section
                  entitled "Management's Discussion and Analysis of Financial
                  Condition and Results of Operations - Critical Accounting
                  Policies" in the Prospectus accurately and fully describes (i)
                  accounting policies that the Company believes to be the most
                  important in the portrayal of the Company's financial
                  condition and results of operations and which require
                  management's most difficult, subjective or complex judgments
                  (henceforth referred to as "CRITICAL ACCOUNTING POLICIES");
                  (ii) uncertainties affecting the application of Critical
                  Accounting Policies; and (iii) an explanation of the
                  likelihood that materially different amounts would be reported
                  under different conditions or using different assumptions.

                           (xl) Liquidity and Capital Resources. The section
                  entitled "Management's Discussion and Analysis of Financial
                  Condition and Results of Operations - Liquidity and Capital
                  Resources" in the Prospectus accurately and fully describes:
                  (i) all material trends, demands, commitments, events,
                  uncertainties and risks, and the potential effects thereof,
                  that the Company believes would materially affect liquidity
                  and are reasonably likely to occur, and (ii) neither the
                  Company nor any of its subsidiaries is engaged in any
                  transactions with, or have any obligations to, its
                  unconsolidated entities (if any) that are contractually
                  limited to narrow activities that facilitate the transfer of
                  or access to assets by the Company or such subsidiary,
                  including, without limitation, structured finance entities and
                  special purpose entities, or otherwise engage in, or have any
                  obligations under, any off-balance sheet transactions or
                  arrangements. As used herein, the phrase "reasonably likely"
                  refers to a disclosure threshold lower than more likely than
                  not.

                           (xli) Trends in Financial Condition. The description
                  set forth in the section of the Prospectus titled
                  "Management's Discussion and Analysis of Financial Condition
                  and Results of Operations" presents fairly and accurately the
                  factors management of the Company believe have in the past and
                  will in the future affect the financial condition and results
                  of operations of the Company and its subsidiaries.

                  (b) Representations and Warranties by the Selling
         Shareholders. Each Selling Shareholder severally and not jointly
         represents and warrants to each Underwriter and the Company as of the
         date hereof and as of each Closing Date, and agrees with each
         Underwriter, as follows:

                           (i) Accurate Disclosure. Such Selling Shareholder has
                  provided for inclusion in the Prospectus (A) the name and
                  address of such Selling Shareholder, (B) the number of Shares
                  underlying ADSs that such Selling Shareholder is selling, and
                  (C) other information relating to such Selling Shareholder
                  included in

                                       15


                  the section entitled "Principal and Selling Shareholders" in
                  the Prospectus as furnished in writing to the Company
                  (collectively, the "SELLING SHAREHOLDER INFORMATION") and
                  represents that such Selling Shareholder Information does not
                  include any untrue statement of a material fact or omits to
                  state a material fact necessary in order to make the
                  statements therein, in the light of the circumstances under
                  which they were made, not misleading.

                           (ii) Authorization of this Agreement. This Agreement
                  has been duly authorized, executed and delivered by or on
                  behalf of such Selling Shareholder.

                           (iii) Authorization of Power of Attorney and Custody
                  Agreement. The Power of Attorney and Custody Agreement, in the
                  form heretofore furnished to the Representatives (the "POWER
                  OF ATTORNEY AND CUSTODY AGREEMENT", has been duly authorized,
                  executed and delivered by such Selling Shareholder and is the
                  valid and binding agreement of such Selling Shareholder.

                           (iv) Non-contravention. The execution and delivery of
                  this Agreement and the Power of Attorney and Custody Agreement
                  and the sale and delivery of the ADSs to be sold by such
                  Selling Shareholder and the consummation of the transactions
                  contemplated herein and compliance by such Selling Shareholder
                  with its obligations hereunder do not and will not, whether
                  with or without the giving of notice or passage of time or
                  both, (i) conflict with or result in a breach or violation of
                  any of the terms or provisions of, or constitute a default
                  under, or result in the creation or imposition of any tax,
                  lien, charge or encumbrance upon the Shares or ADSs to be sold
                  by such Selling Shareholder or any property or assets of such
                  Selling Shareholder pursuant to, any indenture, mortgage, deed
                  of trust, loan agreement or other agreement or instrument to
                  which such Selling Shareholder is a party or by which such
                  Selling Shareholder is bound or to which any of the property
                  or assets of such Selling Shareholder is subject, (ii) result
                  in any violation of the provisions of the articles of
                  incorporation or other organizational documents of such
                  Selling Shareholder or (iii) result in the violation of any
                  law or statute or any judgment, order, rule or regulation of
                  any court or arbitrator or governmental or regulatory
                  authority having jurisdiction over such Selling Shareholder or
                  any of their properties or assets, except in the case of
                  clauses (i) and (iii) above, for any such conflict, breach,
                  violation, default, tax, lien, charge or encumbrance that
                  would not, individually or in the aggregate, have a material
                  adverse effect on the condition, financial or otherwise, or in
                  the earnings, business affairs or business prospects of such
                  Selling Shareholder.

                           (v) Valid Title. Such Selling Shareholder is the sole
                  owner of the Shares to be sold by it and has the full right,
                  power and authority to sell, assign, transfer and deliver such
                  Shares in the form of ADSs pursuant to this Agreement; such
                  Selling Shareholder has, and immediately prior to each Closing
                  Date, as applicable, will have, good and valid title to such
                  Shares, free and clear of all liens, encumbrances, equities or
                  claims; and upon the sale and delivery to the Underwriters of
                  such ADSs and payment therefor, pursuant to this Agreement,


                                       16


                  good and valid title to such ADSs, free and clear of all
                  liens, encumbrances, equities or claims, will be freely
                  transferable by the Selling Shareholder to the Underwriters.

                           (vi) Absence of Manipulation. Such Selling
                  Shareholder has not taken, and will not take, directly or
                  indirectly, any action which is designed to or which has
                  constituted or which would be expected to cause or result in
                  stabilization or manipulation of the price of the Shares or
                  the ADSs in violation of the Exchange Act or the applicable
                  Korean laws.

                           (vii) No Consents Required. No filing with, or
                  consent, approval, authorization, order, registration,
                  qualification or decree of, any court or governmental
                  authority or agency, domestic or foreign, is necessary or
                  required for the execution and delivery by such Selling
                  Shareholder of this Agreement, the Power of Attorney and
                  Custody Agreement, the performance by such Selling Shareholder
                  of its obligations hereunder or in the Power of Attorney and
                  Custody Agreement, or in connection with the sale and delivery
                  of the ADSs by such Selling Shareholder hereunder or the
                  consummation of the transactions contemplated by this
                  Agreement, except for (i) the report to the MOFE, which has
                  been filed, and (ii) such consents, approvals, authorizations,
                  orders and registrations or qualifications as may be required
                  under the Securities Act, applicable state securities laws or
                  applicable Korean laws in connection with the purchase and
                  distribution of the Shares and the ADSs by the Underwriters.

                           (viii) No Association with NASD. Neither such Selling
                  Shareholder nor any of its affiliates directly, or indirectly
                  through one or more intermediaries, controls, or is controlled
                  by, or is under common control with, or is a person associated
                  with (within the meaning of Article I (dd) of the By-laws of
                  the National Association of Securities Dealers, Inc.), any
                  member firm of the National Association of Securities Dealers,
                  Inc., except in the case of General Atlantic Partners 64, L.P.
                  and GAP Coinvestment Partners II, L.P.

                  (c) Officer's Certificates. Any certificate signed by any
         officer of the Company or any of its subsidiaries delivered to the
         Representatives or the Selling Shareholders or to their respective
         counsel shall be deemed a representation and warranty by the Company to
         each Underwriter and each Selling Shareholder as to the matters covered
         thereby; and any certificate signed by or on behalf of the Selling
         Shareholders as such and delivered to the Representatives or to counsel
         for the Underwriters pursuant to the terms of this Agreement shall be
         deemed a representation and warranty by such Selling Shareholder to
         each Underwriter as to the matters covered thereby.

4. Further Agreements.

         (a) The Company covenants and agrees with each Underwriter that:


                                       17


                  (i) Effectiveness of the Registration Statement. The Company
         will use its reasonable best efforts to cause the Registration
         Statement and the ADS Registration Statement to become effective at the
         earliest possible time and, if required, will file the final Prospectus
         with the Commission within the time periods specified by Rule 424(b)
         and Rule 430A under the Securities Act and the Company will furnish
         copies of the Prospectus to the Underwriters in New York City prior to
         10:00 A.M., New York City time, on the business day next succeeding the
         date of this Agreement in such quantities as the Representatives may
         reasonably request.

                  (ii) Delivery of Copies. The Company will deliver, without
         charge, (i) to the Representatives copies of each of the Registration
         Statement and the ADS Registration Statement as originally filed and
         each amendment thereto, in each case including all exhibits and
         consents filed therewith, and copies of all consents and certificates
         of experts and (ii) to each Underwriter (A) a conformed copy of each of
         the Registration Statement and the ADS Registration Statement as
         originally filed and each amendment thereto (without exhibits) and (B)
         during the Prospectus Delivery Period (as defined below), as many
         copies of the Prospectus (including all amendments and supplements
         thereto) as the Representatives may reasonably request. As used herein,
         the term "Prospectus Delivery Period" means such period of time after
         the first date of the public offering of the ADSs as in the opinion of
         counsel for the Underwriters a prospectus is required by law to be
         delivered in connection with sales of the ADSs by any Underwriter or
         dealer. The copies of the Registration Statement and the Prospectus and
         each amendment and supplement thereto furnished to the Underwriters
         will be identical in substance to the electronically transmitted copies
         thereof filed with the Commission pursuant to EDGAR, except to the
         extent permitted by Regulation S-T.

                  (iii) Amendments or Supplements. Before filing any amendment
         or supplement to the Registration Statement, the ADS Registration
         Statement or the Prospectus, the Company will furnish to the
         Representatives and counsel for the Underwriters a copy of the proposed
         amendment or supplement for review and will not file any such proposed
         amendment or supplement to which the Representatives reasonably
         objects.

                  (iv) Notice to the Representatives. The Company will advise
         the Representatives promptly, and confirm such advice in writing, (i)
         when the Registration Statement and the ADS Registration Statement has
         become effective; (ii) when any amendment to the Registration Statement
         or the ADS Registration Statement has been filed or becomes effective;
         (iii) when any supplement to the Prospectus or any amendment to the
         Prospectus has been filed; (iv) of any request by the Commission for
         any amendment to the Registration Statement or the ADS Registration
         Statement or any amendment or supplement to the Prospectus or the
         receipt of any comments from the Commission relating to the
         Registration Statement or the ADS Registration Statement or any other
         request by the

                                       18


         Commission for any additional information; (v) of the issuance by the
         Commission of any order suspending the effectiveness of the
         Registration Statement or the ADS Registration Statement or preventing
         or suspending the use of any Preliminary Prospectus or the Prospectus
         or the initiation or threatening of any proceeding for that purpose;
         (vi) of the occurrence of any event within the Prospectus Delivery
         Period as a result of which the Prospectus as then amended or
         supplemented would include any untrue statement of a material fact or
         omit to state a material fact necessary in order to make the statements
         therein, in the light of the circumstances existing when the Prospectus
         is delivered to a purchaser, not misleading; and (vii) of the receipt
         by the Company of any notice with respect to any suspension of the
         qualification of the Shares or the ADSs for offer and sale in any
         jurisdiction or the initiation or threatening of any proceeding for
         such purpose; and the Company will use its best efforts to prevent the
         issuance of any such order suspending the effectiveness of the
         Registration Statement or the ADS Registration Statement, preventing or
         suspending the use of any Preliminary Prospectus or the Prospectus or
         suspending any such qualification of the Shares or the ADSs and, if any
         such order is issued, will obtain as soon as possible the withdrawal
         thereof.

                  (v) Ongoing Compliance of the Prospectus. If during the
         Prospectus Delivery Period (i) any event shall occur or condition shall
         exist as a result of which the Prospectus as then amended or
         supplemented would include an untrue statement of a material fact or
         omit to state a material fact required to be stated therein or
         necessary in order to make the statements therein, in the light of the
         circumstances existing when the Prospectus is delivered to a purchaser,
         not misleading or (ii) it is necessary to amend or supplement the
         Prospectus to comply with law, the Company will immediately notify the
         Underwriters thereof and forthwith prepare and, subject to paragraph
         (iii) above, file with the Commission and furnish to the Underwriters
         in such quantities as the Representatives may reasonably request and to
         such dealers as the Representatives may designate, such amendments or
         supplements to the Prospectus as may be necessary so that the
         statements in the Prospectus as so amended or supplemented will not, in
         the light of the circumstances existing when the Prospectus is
         delivered to a purchaser, be misleading or so that the Prospectus will
         comply with law.

                  (vi) Blue Sky Compliance. The Company will use its best
         efforts to qualify the Shares and the ADSs for offer and sale under the
         securities of such jurisdictions as the Representatives shall
         reasonably request and will continue such qualifications in effect so
         long as required for distribution of the ADSs.

                  (vii) Earning Statement. The Company will make generally
         available to its security holders and the Representatives as soon as
         practicable an earning statement that satisfies the provisions of
         Section 11(a) of the Securities Act and Rule 158 of the Commission
         promulgated thereunder covering a period of at least

                                       19


         twelve months beginning with the first fiscal quarter of the Company
         occurring after the "effective date" (as defined in Rule 158) of the
         Registration Statement.

                  (viii) Restriction on Sale of Securities. During a period of
         180 days from the date of the Prospectus, the Company will not, without
         the prior written consent of the Representatives, (i) directly or
         indirectly, offer, sell, contract to sell, announce the intention to
         sell, issue, pledge, lend, grant any option, right or warrant for the
         sale of, or otherwise dispose of or transfer (each, collectively, a
         "SALE"), any shares of the Company's Common Stock, or any depositary
         shares representing such Common Stock, or any securities convertible
         into or exchangeable or exercisable for Common Stock, or any depositary
         shares representing such Common Stock, whether now owned or hereafter
         acquired by the Company or with respect to which the Company has or
         hereafter acquires the power of disposition, or file, or cause to be
         filed, any registration statement under the Securities Act of 1933, as
         amended, with respect to any of the foregoing (collectively, the
         "LOCK-UP SECURITIES") or (ii) enter into any swap or any other
         agreement or any transaction that transfers, in whole or in part,
         directly or indirectly, the economic consequences of ownership of the
         Lock-Up Securities, whether any such transaction described in clause
         (i) or (ii) above is to be settled by delivery of Common Stock or other
         securities, in cash or otherwise. The foregoing restriction shall not
         apply to (A) any Sale or Transfer of the Lock-Up Securities pursuant to
         this Agreement, (B) issuance of Common Stock upon the exercise of
         employee stock options existing on the date hereof, (C) issuance of
         Common Stock upon the conversion of the Company's preferred shares
         outstanding as of the date hereof, (D) in connection with any
         acquisition of a company where Lock-Up Securities so disposed of are
         transferred to one or more persons or entities in exchange for the
         shares or assets of the company being acquired, or (E) to any strategic
         or financial investor in the Company's capital stock; provided that in
         the cases of (B), (C), (D) and (E), any holder of Lock-up Securities
         who acquired such Lock-up Securities pursuant to the exceptions set
         forth under (B), (C), (D) and (E), as applicable, shall agree to be
         bound in writing by the terms of the restrictions in this Agreement
         with respect to the Lock-Up Securities during the remainder of the
         aforesaid 180-day period. The foregoing restriction is expressly agreed
         to preclude the Company from engaging in any hedging or other
         transaction which is designed to or which reasonably could be expected
         to lead to or result in a sale or disposition of the Lock-up
         Securities, even if such Lock-up Securities would be disposed of by
         someone other than the Company. Such prohibited hedging or other
         transactions would include, without limitation, any short sale or any
         purchase, sale or grant of any right (including without limitation any
         put or call option) with respect to any of the Lock-up Securities or
         with respect to any security that includes, relates to, or derives any
         significant part of its value from such securities. Notwithstanding any
         provision herein to the contrary, however, if (1) during the last 17
         days of the 180-day lock-up period, the Company issues an earnings
         release or material news or a material event relating to the Company
         occurs; or (2) prior to the expiration of the 180-day lock-up period,
         the Company

                                       20


         announces that it will release earnings results or becomes aware that
         material news or a material event will occur during the 16-day period
         beginning on the last day of the 180-day lock-up period, the
         restrictions imposed by this provision shall continue to apply until
         the expiration of the 18-day period beginning on the issuance of the
         earnings release or the occurrence of the material news or material
         event, as applicable, unless the Representatives waive, in writing,
         such extension. The Company hereby acknowledges and agrees that written
         notice of any extension of the 180-day lock-up period pursuant to the
         previous sentence will be delivered by the Representatives to the
         Company as further set forth in this Agreement and that any such notice
         properly delivered will be deemed to have been given to, and received
         by, the Company.

                  (ix) Use of Proceeds. The Company will apply the net proceeds
         from the sale of the ADSs as described in the Prospectus under the
         heading "Use of Proceeds".

                  (x) Exchange Listing. The Company will use its best efforts to
         list for quotation the ADSs on the National Association of Securities
         Dealers Automated Quotations National Market (the "NASDAQ NATIONAL
         MARKET".)

                  (xi) The Depositary. The Company will cooperate in procuring
         from the Depositary on the Initial Closing Date and the Additional
         Closing Date, if applicable, certificates satisfactory to the
         Representatives evidencing the deposit of the Shares with the custodian
         in accordance with the Deposit Agreement being so deposited against
         issuance of ADRs evidencing the ADSs to be delivered, and the
         execution, countersignature (if applicable), issuance and delivery of
         ADRs evidencing such ADSs pursuant to the Deposit Agreement.

                  (xii) Announcements. Between the date hereof and the Initial
         Closing Date (both dates inclusive), the Company will not, without the
         prior approval of the Representatives (such approval not to be
         unreasonably withheld), make any official announcement (other than any
         notices or filings required to be submitted to or filed with Korea
         Exchange (the "KRX") or the Korean authorities, including the Financial
         Supervisory Commission and the Ministry of Finance and Economy,
         pursuant to Korean laws and regulations) which would have an adverse
         effect on the marketability of the ADSs.

                  (xiii) Investment Company Act. The Company will take such
         steps as shall be necessary to ensure that, prior to the expiration of
         two years after the Closing Date, it shall not be or become an
         "investment company" as defined in the Investment Company Act.

                  (xiv) Payment of Underwriting Commissions. The Company will
         pay or cause to be paid all Underwriting Commissions to the
         Representatives no later than the second business day following the
         Initial Closing Date or the Additional Closing Date, as the case may be
         (each, a "COMMISSIONS PAYMENT DATE"). The

                                       21


         Company hereby agrees that if any Underwriting Commission is not paid
         by the end of the applicable Commissions Payment Date, any past due
         amount shall bear interest for the period beginning from and including
         the date on which such payment was due, to but excluding the date on
         which the payment is made at a rate per annum equal to 5 % plus LIBOR,
         which together with the past due amount shall be paid to the
         Representatives on the date on which the past due amount is paid,
         provided, however, that no interest shall accrue for any period in
         which a payment delay is solely caused by factors beyond the control of
         the Company, including delays caused by any governmental or other
         regulatory authorities.

                  (xv) Stamp Duty and Other Transaction Taxes. The Company will
         indemnify and hold harmless the Underwriters against any stamp duty or
         other issue, transaction, value-added (VAT) or similar tax, fund or
         duty (including court fees), including any interest and penalties
         payable in Korea which are or may be required to be paid in or in
         connection with, the creation, allotment, issuance, offer, sale and
         distribution of the Shares or the ADSs and the execution and delivery
         of the Transaction Documents.

         (b) Each of the Selling Shareholders severally and not jointly agrees
with each Underwriter that:

                  (i) Restriction on Sale of Securities. During a period of 180
         days from the date of this Agreement, such Selling Shareholder will
         not, without the prior written consent of the Representatives, directly
         or indirectly, (i) effect a Sale of any Lock-Up Securities, or (ii)
         enter into any swap or any other agreement or any transaction that
         transfers, in whole or in part, directly or indirectly, the economic
         consequences of ownership (each, collectively, a "Transfer") of the
         Lock-Up Securities, whether any such transaction described in clauses
         (i) or (ii) above is to be settled by delivery of Common Stock, or
         other securities, in cash or otherwise. The foregoing restriction shall
         not apply to (A) any Sale or Transfer of the Lock-Up Securities
         pursuant to this Agreement, (B) the conversion of the Company's
         preferred stock outstanding as of the date hereof into Common Stock,
         (C) any exercise of stock options existing on the date hereof, (D) any
         Sale or Transfer of Lock-Up Securities to the partners of a Selling
         Shareholder, if the Selling Shareholder is a partnership or to the
         members of the Selling Shareholder, if the Selling Shareholder is a
         limited liability company, and (E) any Sale or Transfer of Lock-Up
         Securities to a family member, family partnership or trust, any
         Transfer upon the death of a family member to his or her executors,
         legatees or beneficiaries or a bona fide gift, provided that, in the
         cases of (B), (C), (D), and (E) above, any such transferee shall agree
         to be bound in writing by the terms of the restrictions in this
         Agreement with respect to the Lock-Up Securities during the remainder
         of the aforesaid 180-day period. The foregoing restriction is expressly
         agreed to preclude the Selling Shareholders from engaging in any
         hedging or other transaction which is designed to or which reasonably
         could be expected to lead to or result in a sale or disposition of the
         Lock-up Securities, even if such Lock-up

                                       22


         Securities would be disposed of by someone other than the Selling
         Shareholders. Such prohibited hedging or other transactions would
         include, without limitation, any short sale or any purchase, sale or
         grant of any right (including without limitation any put or call
         option) with respect to any Lock-up Securities or with respect to any
         security that includes, relates to, or derives any significant part of
         its value from such securities. Notwithstanding the foregoing, if (1)
         during the last 17 days of the 180 day lock up period, the Company
         issues an earnings release or material news or a material event
         relating to the Company occurs; or (2) prior to the expiration of the
         180 day lock up period, the Company announces that it will release
         earnings results or becomes aware that material news or a material
         event will occur during the 16 day period beginning on the last day of
         the 180 day lock up period, the restrictions imposed by this provision
         shall continue to apply until the expiration of the 18 day period
         beginning on the issuance of the earnings release or the occurrence of
         the material news or material event, as applicable, unless the
         Representatives waive, in writing, such extension. Such Selling
         Shareholder hereby acknowledges and agrees that written notice of any
         extension of the 180 day lock up period pursuant to the previous
         sentence will be delivered by the Representatives to the Company as
         further set forth in this Agreement and that any such notice properly
         delivered will be deemed to have been given to, and received by, such
         Selling Shareholder.

                  (ii) Notification of Changes. Such Selling Shareholder will
         advise the Representatives promptly, and if requested by the
         Representatives, will confirm such advice in writing, within the
         Prospectus Delivery Period, of any new material information relating to
         the Company not disclosed in the Prospectus which comes to the
         attention of such Selling Shareholder.

                  (iii) Stamp Duty and Other Transaction Taxes. Such Selling
         Shareholder will (severally and not jointly with respect to the other
         Selling Shareholders) indemnify and hold harmless the Underwriters
         against any stamp duty or other issue, transaction, value-added (VAT)
         or similar tax, fund or duty (including court fees), including any
         interest and penalties payable in Korea which are or may be required to
         be paid in or in connection with the offer, sale and distribution of
         the ADSs to be sold by such Selling Shareholder (or the related Shares)
         and the execution and delivery of this Agreement.

      5. Conditions of Underwriters' Obligations. The obligation of each
Underwriter to purchase the Initial ADSs on the Initial Closing Date or the
Option ADSs on the Additional Closing Date, as the case may be, as provided
herein is subject to the performance by each of the Company and the Selling
Shareholders of its covenants and other obligations hereunder and to the
following additional conditions:

          (a) Registration Compliance; No Stop Order. The Registration Statement
     and the ADS Registration Statement (or if a post-effective amendment to the
     Registration Statement or the ADS Registration Statement is required to be
     filed under the Securities Act, such post-effective amendment) shall each
     have become effective, and the

                                       23


     Representatives shall have received notice thereof, not later than 5:00
     P.M., New York City time, on the date hereof; no order suspending the
     effectiveness of the Registration Statement or the ADS Registration
     Statement shall be in effect, and no proceeding for such purpose shall be
     pending before or threatened by the Commission; the Prospectus shall have
     been timely filed with the Commission under the Securities Act and in
     accordance with Section 4(a) hereof; and all requests by the Commission for
     additional information shall have been complied with to the reasonable
     satisfaction of the Representatives.

          (b) Representations and Warranties. The representations and warranties
     of the Company and the Selling Shareholders contained herein shall be true
     and correct on the date hereof and on and as of the Initial Closing Date or
     the Additional Closing Date, as the case may be; and the statements of the
     Company, the Selling Shareholders and their respective officers, made in
     any certificates delivered pursuant to this Agreement shall be true and
     correct on and as of the Initial Closing Date or the Additional Closing
     Date, as the case may be.

          (c) No Material Adverse Change. Subsequent to the execution and
     delivery of this Agreement, no event or condition of a type described in
     Section 3(a)(vi) hereof shall have occurred or shall exist, which event or
     condition is not described in the Prospectus (excluding any amendment or
     supplement thereto) and the effect of which in the sole judgment of the
     Representatives, after consultation with the Company to the extent
     practicable, makes it impracticable or inadvisable to proceed with the
     offering, sale or delivery of the ADSs on the Initial Closing Date or the
     Additional Closing Date, as the case may be, on the terms and in the manner
     contemplated by this Agreement and the Prospectus.

          (d) Officer's Certificate. The Representatives shall have received on
     and as of the Initial Closing Date or the Additional Closing Date, as the
     case may be, a certificate of the chief executive officer, chief financial
     officer or chief accounting officer of the Company (i) confirming that such
     officers have carefully reviewed the Registration Statement and the
     Prospectus and, to the best knowledge of such officers, the representation
     set forth in Section 3(a)(ii) hereof is true and correct, (ii) confirming
     that the representations and warranties of the Company, other than the
     representation set out in Section 3(a)(ii) in this Agreement, are true and
     correct and that the Company has complied with all agreements and satisfied
     all conditions on its part to be performed or satisfied hereunder at or
     prior to such Initial Closing Date or such Additional Closing Date, as the
     case may be, and (iii) to the effect set forth in paragraphs (a) and (c)
     above.

          (e) Certificate of Selling Shareholders. The Representatives shall
     have received on and as of the Initial Closing Date or the Additional
     Closing Date, as the case may, be, a certificate of an Attorney-in-Fact on
     behalf of each Selling Shareholder, to the effect that (i) the
     representations and warranties of such Selling Shareholder contained in
     Section 3(b) hereof are true and correct in all respect with the same force
     and effect as though expressly made at and as of each Closing Date, as the
     case may be, and (ii) each Selling Shareholder has complied in all material
     respects with all agreements and all

                                       24


     conditions on its part to be performed under this Agreement at or prior to
     each Closing Date, as the case may be.

          (f) Comfort Letters. On the date of this Agreement and on the Initial
     Closing Date or the Additional Closing Date, as the case may be, Samil
     PricewaterhouseCoopers, the Korean member firm of PricewaterhouseCoopers,
     shall have furnished to the Representatives, at the request of the Company,
     letters, dated the respective dates of delivery thereof and addressed to
     the Underwriters, in form and substance reasonably satisfactory to the
     Representatives, containing statements and information of the type
     customarily included in accountants' "comfort letters" to underwriters with
     respect to the financial statements and certain financial information
     contained in the Registration Statement and the Prospectus; provided, that
     the letter delivered on the Initial Closing Date or the Additional Closing
     Date, as the case may be, shall use a "cut-off" date no more than three
     business days prior to such Initial Closing Date or such Additional Closing
     Date, as the case may be.

          (g) Opinion of U.S. Counsel for the Company. Simpson Thacher &
     Bartlett LLP, United States counsel for the Company, shall have furnished
     to the Representatives, at the request of the Company, their written
     opinion, dated the Initial Closing Date or the Additional Closing Date, as
     the case may be, and addressed to the Underwriters, in form and substance
     reasonably satisfactory to the Representatives, to the effect set forth in
     ANNEX A-1 hereto.

          (h) Opinion of Counsel for the Selling Shareholders. Counsel for each
     of the Selling Shareholders, shall have furnished to the Representatives,
     at the request of the Company, their written opinion, dated the Initial
     Closing Date or the Additional Closing Date, as the case may be, and
     addressed to the Underwriters, in form and substance reasonably
     satisfactory to the Representatives, to the effect set forth in ANNEX A-2
     hereto.

          (i) Opinion of Korean Counsel for the Company and the Selling
     Shareholders. Shin & Kim, Korean counsel for the Company and the Selling
     Shareholders, shall have furnished to the Representatives, at the request
     of the Company, their written opinion, dated the Initial Closing Date or
     the Additional Closing Date, as the case may be, and addressed to the
     Underwriters, in form and substance reasonably satisfactory to the
     Representatives, to the effect set forth in ANNEX B hereto.

          (j) Opinion of U.S. Counsel for the Underwriters. The Representatives
     shall have received on and as of the Initial Closing Date or the Additional
     Closing Date, as the case may be, an opinion of Davis Polk & Wardwell,
     United States counsel for the Underwriters, with respect to such matters as
     the Representatives may reasonably request, and such counsel shall have
     received such documents and information as they may reasonably request to
     enable them to pass upon such matters.

          (k) Opinion of Korean Counsel for the Underwriters. The
     Representatives shall have received on and as of the Closing Date or the
     Additional Closing Date, as the case may be, an opinion of Kim & Chang,
     Korean counsel for the Underwriters, with

                                       25


     respect to such matters as the Representatives may reasonably request, and
     such counsel shall have received such documents and information as they may
     reasonably request to enable them to pass upon such matters.

          (l) Opinion of Counsel for the Depositary. Ziegler, Ziegler &
     Associates, LLP, United States counsel for the Depositary, shall have
     furnished to the Representatives, at the request of the Depositary, their
     written opinion, dated the Initial Closing Date or the Additional Closing
     Date, as the case may be, and addressed to the Underwriters, in form and
     substance reasonably satisfactory to the Representatives, to the effect set
     forth in ANNEX C hereto.

          (m) Opinion of General Counsel of the Company. The Representatives
     shall have received on and as of the Closing Date or the Additional Closing
     Date, as the case may be, an opinion of Dan Nemo, General Counsel of the
     Company, addressed to the Underwriters, in form and substance reasonably
     satisfactory to the Representatives, to the effect set forth in ANNEX D
     hereto.

          (n) No Legal Impediment to Issuance. No action shall have been taken
     and no statute, rule, regulation or order shall have been enacted, adopted
     or issued by any federal, state or foreign governmental or regulatory
     authority, including the Financial Supervisory Commission and other Korean
     authorities, that would, as of the Initial Closing Date or the Additional
     Closing Date, as the case may be, prevent the issuance of the Shares, the
     deposit of such Shares with the Depositary against issuance of the ADRs
     evidencing the ADSs or the sale of such ADSs; and no injunction or order of
     any federal, state or foreign court shall have been issued that would, as
     of the Initial Closing Date or the Additional Closing Date, as the case may
     be, prevent the issuance of the Shares, the deposit of such Shares with the
     Depositary against issuance of the ADRs evidencing the ADSs or the sale of
     such ADSs.

          (o) Exchange Listing. The ADSs to be delivered on the Initial Closing
     Date or Additional Closing Date, as the case may be, shall have been
     approved for listing on the Nasdaq National Market, subject to official
     notice of issuance.

          (p) Lock-up Agreements. The "lock-up" agreements, each substantially
     in the form of EXHIBIT A hereto signed by each person listed on Schedule IV
     hereto, delivered to the Representatives on or before the date hereof,
     shall be in full force and effect on the Initial Closing Date or Additional
     Closing Date, as the case may be.

          (q) Additional Documents. On or prior to the Initial Closing Date or
     the Additional Closing Date, as the case may be, the Company shall have
     furnished to the Representatives such further certificates and documents as
     the Representatives may reasonably request.

          (r) No Objection. The NASD has confirmed that it has not raised any
     objection with respect to the fairness and reasonableness of the
     underwriting terms and arrangements.


                                       26


          (s) Deposit Agreement. The Deposit Agreement shall be in full force
     and effect.

          (t) Depositary's Certificate. The Depositary shall have furnished or
     caused to be furnished to the Underwriters a certificate, satisfactory to
     the Representatives, of one of its authorized officers with respect to the
     execution and delivery of the ADRs evidencing the ADSs pursuant to the
     Deposit Agreement and such other matters related thereto as the
     Underwriters reasonably request.

          (u) Termination of Agreement. If any condition specified in this
     Section shall not have been fulfilled when and as required to be fulfilled,
     this Agreement, or, in the case of any condition to the purchase of Option
     ADSs on the Additional Closing Date which is after the Initial Closing
     Date, the obligations of the several Underwriters to purchase the relevant
     Option ADSs, may be terminated by the Representatives by notice to the
     Company and the Selling Shareholders at any time at or prior to each such
     Closing Date, as the case may be, and such termination shall be without
     liability of any party to any other party except as provided in Section 12
     and except that Sections 3, 6, 7 and 8 shall survive any such termination
     and remain in full force and effect.

     All opinions, letters, certificates and evidence mentioned above or
elsewhere in this Agreement shall be deemed to be in compliance with the
provisions hereof only if they are in form and substance reasonably satisfactory
to counsel for the Underwriters.

     6. Indemnification.

     (a) Indemnification of Underwriters and Selling Shareholders by the
Company. The Company agrees to indemnify and hold harmless each Underwriter, its
affiliates, as such term is defined in Rule 501(b) under the Securities Act
(each, an "AFFILIATE"), its selling agents, each Selling Shareholder, their
respective affiliates, and each person, if any, who controls any Underwriter or
any Selling Shareholder within the meaning of Section 15 of the Securities Act
or Section 20 of the Exchange Act as follows:

                  (i) against any and all loss, liability, claim and damage, as
         incurred, arising out of any untrue statement or alleged untrue
         statement of a material fact contained in the Registration Statement
         (or any amendment thereto), including the Rule 430A Information, or the
         ADS Registration Statement or the omission or alleged omission
         therefrom of a material fact required to be stated therein or necessary
         to make the statements therein not misleading or arising out of any
         untrue statement or alleged untrue statement of a material fact
         included in any preliminary prospectus or the Prospectus (or any
         amendment or supplement thereto), or the omission or alleged omission
         therefrom of a material fact necessary in order to make the statements
         therein, in the light of the circumstances under which they were made,
         not misleading;

                  (ii) against any and all loss, liability, claim and damage, as
         incurred, to the extent of the aggregate amount paid in settlement of
         any litigation, or any

                                       27


         investigation or proceeding by any governmental agency or body,
         commenced or threatened, or of any claim whatsoever based upon any such
         untrue statement or omission, or any such alleged untrue statement or
         omission; provided that (subject to Section 6(d) below) any such
         settlement is effected with the written consent of the Company and the
         Selling Shareholders;

                  (iii) against any and all expense whatsoever (including the
         fees and disbursements of counsel chosen by the Representatives)
         reasonably incurred in investigating, preparing or defending against
         any litigation, or any investigation or proceeding by any governmental
         agency or body, commenced or threatened, or any claim whatsoever based
         upon any such untrue statement or omission, or any such alleged untrue
         statement or omission, to the extent that any such expense is not paid
         under (i) or (ii) above;

     provided, however, that this indemnity agreement shall not apply to any
loss, liability, claim, damage or expense to the extent arising out of any
untrue statement or omission or alleged untrue statement or omission (i)
regarding a Selling Shareholder which consists of Selling Shareholder
Information or (ii) made in reliance upon and in conformity with written
information furnished to the Company by any Underwriter through the
Representatives expressly for use in the Registration Statement (or any
amendment thereto), including the Rule 430A Information, or any preliminary
prospectus or the Prospectus (or any amendment or supplement thereto); and
provided, further, that with respect to any untrue statement or alleged untrue
statement in or omission or alleged omission from any preliminary prospectus
this indemnity agreement contained in this subsection (a) shall not inure to the
benefit of any Underwriter from whom the person asserting any such loss,
liability, claim, damage or expense purchased the ADSs concerned, to the extent
that a prospectus relating to such ADSs was required to be delivered by such
Underwriter under the Securities Act in connection with such purchase and any
such loss, liability claim, damage or expense of such Underwriter results from
the fact that there was not sent or given to such person, at or prior to the
written confirmation of the sale of such ADSs to such person, a copy of the
Prospectus if the Company had previously furnished copies thereof in sufficient
quantities to such Underwriter.

          (b) Indemnification of the Underwriters and the Company by the Selling
     Shareholders. Each Selling Shareholder hereunder agrees, severally and not
     jointly, to indemnify and hold harmless each Underwriter, its Affiliates,
     its selling agents and each person, if any, who controls such Underwriter
     within the meaning of Section 15 of the Securities Act or Section 20 of the
     Exchange Act, and the Company, its directors, each of its officers who
     signed the Registration Statement, and each person, if any, who controls
     the Company within the meaning of Section 15 of the Securities Act or
     Section 20 of the Exchange Act against any and all loss, liability, claim,
     damage and expense described in the indemnity contained in subsection (a)
     of this Section, as incurred, but only with respect to untrue statements or
     omissions, or alleged untrue statements or omissions, made in the
     Registration Statement (or any amendment thereto), including the Rule 430A
     Information, or any preliminary prospectus or the Prospectus (or any
     amendment or supplement thereto) which consists of Selling Shareholder
     Information furnished in

                                       28


     writing to the Company by such Selling Shareholder; provided, however,
     that, the liability of such Selling Shareholder pursuant to this subsection
     (b) shall not exceed the amount of total net proceeds (before deducting
     expenses but after deducting underwriting commissions and discounts)
     received by such Selling Shareholder from the sale of the ADSs pursuant to
     this Agreement; and provided, further, that with respect to any untrue
     statement or alleged untrue statement in or omission or alleged omission
     from any preliminary prospectus this indemnity agreement contained in this
     subsection (b) shall not inure to the benefit of any Underwriter from whom
     the person asserting any such loss, liability, claim, damage or expense
     purchased the ADSs concerned, to the extent that a prospectus relating to
     such ADSs was required to be delivered by such Underwriter under the
     Securities Act in connection with such purchase and any such loss,
     liability claim, damage or expense of such Underwriter results from the
     fact that there was not sent or given to such person, at or prior to the
     written confirmation of the sale of such ADSs to such person, a copy of the
     Prospectus if the Company had previously furnished copies thereof in
     sufficient quantities to such Underwriter.

          (c) Indemnification of Company, Directors and Officers and Selling
     Shareholders. Each Underwriter severally agrees to indemnify and hold
     harmless the Company, its directors, each of its officers who signed the
     Registration Statement, and each person, if any, who controls the Company
     within the meaning of Section 15 of the Securities Act or Section 20 of the
     Exchange Act, and each Selling Shareholder against any and all loss,
     liability, claim, damage and expense described in the indemnity contained
     in subsection (a) of this Section, as incurred, but only with respect to
     untrue statements or omissions, or alleged untrue statements or omissions,
     made in the Registration Statement (or any amendment thereto), including
     the Rule 430A Information, or any preliminary prospectus or the Prospectus
     (or any amendment or supplement thereto) in reliance upon and in conformity
     with written information furnished to the Company by such Underwriter
     through the Representatives expressly for use in the Registration Statement
     (or any amendment thereto) or such preliminary prospectus or the Prospectus
     (or any amendment or supplement thereto).

          (d) Actions against Parties; Notification. Each indemnified party
     shall give notice as promptly as reasonably practicable to each
     indemnifying party of any action commenced against it in respect of which
     indemnity may be sought hereunder, but failure to so notify an indemnifying
     party shall not relieve such indemnifying party from any liability
     hereunder to the extent it is not materially prejudiced as a result thereof
     and in any event shall not relieve it from any liability which it may have
     otherwise than on account of this indemnity agreement. If any such
     proceeding shall be brought or asserted against an indemnified party and if
     the indemnified party shall have notified the indemnifying party thereof,
     the indemnifying party shall retain counsel reasonably satisfactory to the
     indemnified party to represent the indemnified party and any others
     entitled to indemnification pursuant to this Section 6 that the
     indemnifying party may designate in such proceeding and shall pay the fees
     and expenses of such counsel related to such proceeding, as incurred. In
     any such proceeding, any indemnified party shall have the right to retain
     its own counsel, but the fees and expenses of such counsel shall be at the


                                       29


     expense of such indemnified party unless (i) the indemnifying party and the
     indemnified party shall have mutually agreed to the contrary; (ii) the
     indemnifying party has failed within a reasonable time to retain counsel
     reasonably satisfactory to the indemnified party; (iii) the indemnified
     party shall have reasonably concluded that there may be legal defenses
     available to it that are different from or in addition to those available
     to the indemnifying party; or (iv) the named parties in any such proceeding
     (including any impleaded parties) include both the indemnifying party and
     the indemnified party and representation of both parties by the same
     counsel would be inappropriate due to actual or potential differing
     interests between them. An indemnifying party may participate at its own
     expense in the defense of any such action; provided, however, that counsel
     to the indemnifying party shall not (except with the consent of the
     indemnified party) also be counsel to the indemnified party. In no event
     shall the indemnifying parties be liable for fees and expenses of more than
     one counsel (in addition to any local counsel) separate from their own
     counsel for all indemnified parties in connection with any one action or
     separate but similar or related actions in the same jurisdiction arising
     out of the same general allegations or circumstances. Any such separate
     firm for any Underwriter and its Affiliates shall be designated in writing
     by the Representatives, any such separate firm for the Company, any of its
     respective affiliates, directors or officers and any control persons of the
     Company shall be designated in writing by the Company, and any such
     separate firm for any Selling Shareholder or its respective affiliates,
     directors or officer and any control persons shall be designated in writing
     by such Selling Shareholder. No indemnifying party shall, without the prior
     written consent of the indemnified parties, settle or compromise or consent
     to the entry of any judgment with respect to any litigation, or any
     investigation or proceeding by any governmental agency or body, commenced
     or threatened, or any claim whatsoever in respect of which indemnification
     or contribution could be sought under this Section 6 or Section 7 hereof
     (whether or not the indemnified parties are actual or potential parties
     thereto), unless such settlement, compromise or consent (i) includes an
     unconditional release of each indemnified party from all liability arising
     out of such litigation, investigation, proceeding or claim and (ii) does
     not include a statement as to or an admission of fault, culpability or a
     failure to act by or on behalf of any indemnified party.

          (e) Settlement without Consent if Failure to Reimburse. If at any time
     an indemnified party shall have requested an indemnifying party to
     reimburse the indemnified party for fees and expenses of counsel, such
     indemnifying party agrees that it shall be liable for any settlement of the
     nature contemplated by Section 6(a) effected without its written consent if
     (i) such settlement is entered into more than 60 days after receipt by such
     indemnifying party of the aforesaid request, (ii) such indemnifying party
     shall have received notice of the terms of such settlement at least 45 days
     prior to such settlement being entered into and (iii) such indemnifying
     party shall not have reimbursed such indemnified party in accordance with
     such request prior to the date of such settlement.


                                       30


                  (f) Other Agreements with Respect to Indemnification. The
         provisions of this Section shall not affect any agreement among the
         Company and the Selling Shareholders with respect to indemnification.

         7. Contribution. If the indemnification provided for in Section 6
hereof is for any reason unavailable to or insufficient to hold harmless an
indemnified party in respect of any losses, liabilities, claims, damages or
expenses referred to therein, then each indemnifying party shall contribute to
the aggregate amount of such losses, liabilities, claims, damages and expenses
incurred by such indemnified party, as incurred, (i) in such proportion as is
appropriate to reflect the relative benefits received by the Company, each
Selling Shareholder, and the Underwriters, as the case may be, from the offering
of the ADSs pursuant to this Agreement or (ii) if the allocation provided by
clause (i) is not permitted by applicable law, in such proportion as is
appropriate to reflect not only the relative benefits referred to in clause (i)
above but also the relative fault of the Company, each Selling Shareholder and
the Underwriters, as the case may be, in connection with the statements or
omissions which resulted in such losses, liabilities, claims, damages or
expenses, as well as any other relevant equitable considerations.

         The relative benefits received by the Company, each Selling Shareholder
and the Underwriters, as the case may be, in connection with the offering of the
ADSs pursuant to this Agreement shall be deemed to be in the same respective
proportions as the total net proceeds from the offering of the ADSs pursuant to
this Agreement (before deducting expenses but after deducting underwriting
discounts and commissions) received by the Company and such Selling Shareholder
and the total underwriting discounts and commissions received by the
Underwriters, in each case as set forth on the cover of the Prospectus bear to
the aggregate initial public offering price of the ADSs as set forth on the
cover of the Prospectus.

         The relative fault of the Company, each Selling Shareholder and the
Underwriters, as the case may be, shall be determined by reference to, among
other things, whether any such untrue or alleged untrue statement of a material
fact or omission or alleged omission to state a material fact relates to
information supplied by the Company, such Selling Shareholder or the
Underwriters and the parties' relative intent, knowledge, access to information
and opportunity to correct or prevent such statement or omission.

         The Company, the Selling Shareholders and the Underwriters agree that
it would not be just and equitable if contribution pursuant to this Section 7
were determined by pro rata allocation (even if the Underwriters or the Selling
Shareholders were respectively treated as one entity for such purpose) or by any
other method of allocation which does not take account of the equitable
considerations referred to above in this Section 7. The aggregate amount paid or
payable by such indemnified party as a result of losses, liabilities, claims,
damages and expenses referred to above in this Section 7 shall be deemed to
include, subject to the limitations set forth above, any legal or other expenses
reasonably incurred by such indemnified party in investigating, preparing or
defending against any litigation, or any investigation or proceeding by any
governmental agency or body, commenced or threatened, or any claim whatsoever
based upon any such untrue or alleged untrue statement or omission or alleged
omission.



                                       31


         Notwithstanding the provisions of this Section 7, no Underwriter shall
be required to contribute any amount in excess of the amount by which the total
underwriting discounts and commissions received by such Underwriter with respect
to the offering of the ADSs exceeds the amount of any damages which such
Underwriter has otherwise been required to pay by reason of any such untrue or
alleged untrue statement or omission or alleged omission.

         Notwithstanding the provisions of this Section 7, no Selling
Shareholder shall be required to contribute any amount in excess of the amount
by which the total net proceeds (before deducting expenses but after deducting
underwriting commissions and discounts) received by such Selling Shareholder
from the sale of the ADSs, pursuant to this Agreement exceeds the amount of any
damages which such Selling Shareholder has otherwise been required to pay by
reason of any such untrue or alleged untrue statement or omission or alleged
omission.

         No person guilty of fraudulent misrepresentation (within the meaning of
Section 11(f) of the Securities Act) shall be entitled to contribution from any
person who was not guilty of such fraudulent misrepresentation.

         For purposes of this Section 7, each person, if any, who controls an
Underwriter or a Selling Shareholder within the meaning of Section 15 of the
Securities Act or Section 20 of the Exchange Act, each Underwriter's affiliates
and selling agents and each Selling Shareholder's affiliates shall have the same
rights to contribution as such Underwriter or Selling Shareholder, and each
director of the Company, each officer of the Company who signed the Registration
Statement, and each person, if any, who controls the Company within the meaning
of Section 15 of the Securities Act or Section 20 of the Exchange Act shall have
the same rights to contribution as the Company. The Underwriters' respective
obligations to contribute pursuant to this Section 7 are several in proportion
to the number of Initial ADSs set forth opposite their respective names in
Schedule I hereto and not joint.

         The provisions of this Section shall not affect any agreement among the
Company and the Selling Shareholders with respect to contribution.

         8. Representations, Warranties and Agreements to Survive. All
representations, warranties and agreements contained in this Agreement or in
certificates of officers of the Company or any of its subsidiaries or the
Selling Shareholders submitted pursuant hereto, shall remain operative and in
full force and effect regardless of (i) any investigation made by or on behalf
of any Underwriter or its Affiliates or selling agents, any person controlling
any Underwriter, its officers or directors or any person controlling the Company
or any person controlling any Selling Shareholder and (ii) delivery of and
payment for the ADSs.

         9. Effectiveness of Agreement. This Agreement shall become effective
upon the later of (i) the execution and delivery hereof by the parties hereto
and (ii) receipt by the Company and the Representatives of notice of the
effectiveness of both the Registration Statement and the ADS Registration
Statement (or, if applicable, any post-effective amendment thereto).

         10. Termination of Agreement.


                                       32


                  (a) Termination; General. The Representatives may terminate
         this Agreement, by notice to the Company and the Selling Shareholders,
         at any time at or prior to the Initial Closing Date (i) if there has
         occurred any material adverse change in the financial markets in the
         United States, United Kingdom or Korea, any outbreak of hostilities
         involving the United States, United Kingdom or Korea or material
         escalation thereof or other calamity or crisis or any change or
         development involving a prospective material adverse change in national
         or international political, financial or economic conditions, in each
         case the effect of which is such as to make it, in the sole judgment of
         the Representatives, after consultation with the Company to the extent
         practicable, impracticable or inadvisable to market the ADSs or to
         enforce contracts for the sale of the ADSs, or (ii) if trading in any
         securities issued or guaranteed by the Company has been suspended or
         materially limited by the Commission or any exchange or in any
         over-the-counter market, or if trading generally on the New York Stock
         Exchange, the Nasdaq National Market or the KRX, has been suspended or
         materially limited, or minimum or maximum prices for trading have been
         fixed, or maximum ranges for prices have been required, by any of said
         exchanges or by such system or by order of the Commission, the National
         Association of Securities Dealers, Inc. or any other governmental
         authority (other than as a result of the maximum and minimum trading
         price system of the KRX, or (iii) a material disruption has occurred in
         commercial banking in Korea or in the United States or the securities
         settlement or clearance services in the United States, or (iv) if a
         general moratorium on commercial banking has been declared by either
         Federal, New York or the Korean authorities.

                  (b) Liabilities. If this Agreement is terminated pursuant to
         this Section, such termination shall be without liability of any party
         to any other party except as provided in Section 12 hereof, and
         provided further that Sections 3, 6, 7 and 8 shall survive such
         termination and remain in full force and effect.

         11. Default by One or More of the Underwriters. If one or more of the
Underwriters shall fail at the Initial Closing Date or the Additional Closing
Date, as the case may be, to purchase the ADSs which it or they are obligated to
purchase under this Agreement (the "DEFAULTED ADSS", the Representatives shall
have the right, within 36 hours thereafter, to make arrangements for one or more
of the non defaulting Underwriters, or any other underwriters, to purchase all,
but not less than all, of the Defaulted ADSs in such amounts as may be agreed
upon and upon the terms herein set forth; if, however, the Representatives shall
not have completed such arrangements within such 36 hour period, then the
Company shall be entitled to a further period of 36 hours within which to
procure other persons satisfactory to the non-defaulting Underwriters to
purchase such ADSs on such terms. If, after giving effect to any arrangements
for the purchase of the ADSs of a defaulting Underwriter or Underwriters by the
non-defaulting Underwriters and the Company as provided herein, then:

                           (i) if the number of Defaulted ADSs does not exceed
                  10% of the number of Securities to be purchased on such date,
                  each of the non defaulting Underwriters shall be obligated,
                  severally and not jointly, to purchase the full amount thereof
                  in the proportions that their respective underwriting
                  obligations hereunder bear to the underwriting obligations



                                       33


                  of all non defaulting Underwriters, or

                           (ii) if the number of Defaulted ADSs exceeds 10% of
                  the number of Securities to be purchased on such date, this
                  Agreement or, with respect to any Additional Closing Date
                  which occurs after the Initial Closing, the obligation of the
                  Underwriters to purchase and of the Company to sell the Option
                  ADSs to be purchased and sold on such Additional Closing Date
                  shall terminate without liability on the part of any non
                  defaulting Underwriter.

         No action taken pursuant to this Section shall relieve any defaulting
Underwriter from liability in respect of its default.

         In the event of any such default which does not result in a termination
of this Agreement or, in the case of the Additional Closing Date which is after
the Initial Closing, which does not result in a termination of the obligation of
the Underwriters to purchase and the Company to sell the relevant Option ADSs,
as the case may be, either (i) the Representatives or (ii) the Company and any
Selling Shareholder shall have the right to postpone the Initial Closing Date or
the Additional Closing Date, as the case may be, for a period not exceeding
seven days in order to effect any required changes in the Registration Statement
or Prospectus or in any other documents or arrangements. As used herein, the
term "Underwriter" includes any person substituted for an Underwriter under this
Section 11.

         12. Payment of Expenses; Taxes. The Company, the Underwriters and the
Selling Shareholders shall pay such fees, expenses and taxes incurred in
connection with the transactions contemplated herein in accordance with the
provisions of a side letter agreement dated the date hereof among such parties
relating to the payment of such fees and expenses.

         13. Persons Entitled to Benefit of Agreement. This Agreement shall
inure to the benefit of and be binding upon the parties hereto and their
respective successors and the officers and directors and any controlling persons
referred to in Section 6 hereof. Nothing in this Agreement is intended or shall
be construed to give any other person any legal or equitable right, remedy or
claim under or in respect of this Agreement or any provision contained herein.
No purchaser of ADSs from any Underwriter shall be deemed to be a successor
merely by reason of such purchase.

         14. Certain Defined Terms. For purposes of this Agreement, (a) except
where otherwise expressly provided, the term "affiliate" has the meaning set
forth in Rule 405 under the Securities Act; and (b) the term "business" day
means any day other than a day on which banks are permitted or required to be
closed in New York City or Seoul, Korea; and (c) the term "LIBOR" means, for
U.S. dollar deposits for a period of six (6) months, or such other period to be
determined by the Representatives and the Company if such rate is not available,
that appears on the screen display designated as "Page 3750" on the Telerate
Service (or such other screen display or service as may replace it for the
purpose of displaying British Bankers' Association LIBOR rates for U.S. dollar
deposits in the London interbank market) at or about 11:00 a.m. London time on
the Closing Date or the Additional Closing Date, as the case may be.



                                       34


         15. Miscellaneous.


                  (a) Authority of the Representatives. Any action by the
         Underwriters hereunder may be taken by the Representatives on behalf of
         the Underwriters, and any such action taken by the Representatives
         shall be binding upon the Underwriters.

                  (b) Notices. All notices and other communications hereunder
         shall be in writing and shall be deemed to have been duly given if
         mailed or transmitted and confirmed by any standard form of
         telecommunication. Notices to the Underwriters shall be given to the
         Representatives c/o Merrill Lynch, Pierce, Fenner & Smith Incorporated
         (fax: (+1) 212 [  ]); Attention: Equity Capital Markets. Notices to the
         Company shall be given to it at:

                                 WiderThan Co., Ltd.
                                 17F K1 REIT Building
                                 463 Chungjeong-ro 3-ga
                                 Seoul, Korea 120-709
                                 Attention: Don Rim
                                 fax: 822-2014-5004

                                 with a copy to:

                                 WiderThan Americas, Inc.
                                 11 West 42nd Street, 11th Floor
                                 New York, New York 10036 U.S.A.
                                 Attention: Dan Nemo
                                 fax: 1-212-391-6668

         Notices to the Selling Shareholders shall be given to the following
persons:

                                 Nokia Venture Partners II, L.P.
                                 545 Middlefield Road
                                 Suite 210
                                 Menlo Park, CA  94025 U.S.A.
                                 Attention:  David Jaques
                                 Chief Financial Officer
                                 fax:  1-650-462-7252

                                 i-Hatch Ventures, L.P.
                                 599 Broadway
                                 8th Floor
                                 New York, New York  10021 U.S.A.
                                 Attention:  Andrew Sutton
                                 fax:  1-212-208-2505


                                       35


                                 with a copy to

                                 Holland & Knight LLP
                                 195 Broadway
                                 New York, New York  10007 U.S.A.
                                 Attention:  Neal N. Beaton
                                 fax:  1-212-341-7103


                                 General Atlantic Service Corporation
                                 3 Pickwick Plaza
                                 Greenwich, CT 06830 U.S.A.
                                 Attention: David A. Rosenstein
                                 fax: 1-203-622-8818

                                 with a copy to:

                                 Paul, Weiss, Rifkind, Wharton & Garrison LLP
                                 1285 Avenue of the Americas
                                 New York, NY 10019-6064
                                 Attention: Raphael M. Russo
                                 fax: (212) 757-3990


                                 Dan Nemo (as Attorney-in-fact of certain
                                 Selling Shareholders)
                                 WiderThan Americas, Inc.
                                 11 West 42nd Street, 11th Floor
                                 New York, New York 10036 U.S.A.
                                 fax: 1-212-391-6668


                  (c) Governing Law. This Agreement shall be governed by and
         construed in accordance with the laws of the State of New York.

                  (d) Counterparts. This Agreement may be signed in counterparts
         (which may include counterparts delivered by any standard form of
         telecommunication), each of which shall be an original and all of which
         together shall constitute one and the same instrument.

                  (e) Amendments or Waivers. No amendment or waiver of any
         provision of this Agreement, nor any consent or approval to any
         departure therefrom, shall in any event be effective unless the same
         shall be in writing and signed by the parties hereto.

                  (f) Jurisdiction and Venue; Agent for Service. To the fullest
         extent permitted by applicable law, each of the Company and the Selling
         Shareholders irrevocably (i) agrees that any legal suit, action or
         proceeding arising out of or based upon this


                                       36


         Agreement or the transactions contemplated hereby may be instituted in
         any state or federal court located in the Borough of Manhattan, The
         City of New York (each, a "New York Court"), (ii) waives, to the
         fullest extent it may effectively do so, any objection which it may now
         or hereafter have to the laying of venue of any such proceeding and
         (iii) submits to the non-exclusive jurisdiction of such courts in any
         such suit, action or proceeding. The Company and each Selling
         Shareholder that is not domiciled in the U.S.A. has irrevocably
         designated and appointed WiderThan Americas, Inc. at 11 West 42nd
         Street, 11th Floor, New York, New York 10036, as its authorized agent
         (the "Authorized Agent") upon whom process may be served in any such
         suit, action or proceeding in any New York Court and expressly consents
         to the non-exclusive jurisdiction of any such court in respect of any
         such suit, action or proceeding and waives, to the fullest extent
         permitted by applicable law, any other requirements of, or objections
         to, personal jurisdiction with respect thereto. The Company represents
         and warrants that the Authorized Agent has agreed to act as such agent
         for service of process and agrees to take any and all action, including
         the filing of any and all documents and instruments, that may be
         necessary to continue such appointment in full force and effect as
         aforesaid; provided that if for any reason the Authorized Agent named
         above ceases to act as Authorized Agent hereunder for the Company, the
         Company will appoint another person acceptable to the Representatives
         in the Borough of Manhattan, The City of New York and the State of New
         York, as Authorized Agent. Service of process upon the Authorized Agent
         and written notice of such service to the Company shall be deemed, in
         every respect, effective service of process on the Company.

                  (g) Judgment Currency. In respect of any judgment or order
         against the Company or a Selling Shareholder given or made for any
         amount due hereunder that is expressed and paid in a currency (the
         "JUDGMENT CURRENCY") other than United States dollars, to the fullest
         extent permitted by applicable law, the Company and such Selling
         Shareholder, severally and not jointly, will indemnify each Underwriter
         against any loss incurred by such Underwriter as a result of any
         variation as between (i) the rate of exchange at which the United
         States dollar amount is converted into the judgment currency for the
         purpose of such judgment or order and (ii) the rate of exchange at
         which an Underwriter is able to purchase United States dollars with the
         amount of the judgment currency actually received by such Underwriter.
         The foregoing indemnity shall constitute a separate and independent
         several obligation of the Company and any Selling Shareholder subject
         to such judgment or order and shall continue in full force and effect
         notwithstanding any judgment or order as aforesaid. The term "rate of
         exchange" shall include any premiums and costs of exchange payable in
         connection with the purchase of, or conversion into, United States
         dollars.

                  (h) Headings. The headings herein are included for convenience
         of reference only and are not intended to be part of, or to affect the
         meaning or interpretation of, this Agreement.



                                       37


         If the foregoing is in accordance with your understanding, please
indicate your acceptance of this Agreement by signing in the space provided
below.

                                       Very truly yours,

                                       WIDERTHAN CO., LTD.

                                       By:
                                           -------------------------------------
                                           Name:
                                           Title:

NOKIA VENTURE PARTNERS II, L.P.               NVP AFFILIATES FUND II, L.P.

By:                                           By:
       ---------------------------                   ---------------------------
       Name:                                         Name:
       Title:                                        Title:




I-HATCH VENTURES, L.P.                        I-HATCH ADVISORS, L.P.

By:                                           By:
       ---------------------------                   ---------------------------
       Name:                                         Name:
       Title:                                        Title:




I-HATCH WTC HOLDINGS, LLC                     ZT HOLDINGS, LLC

By:                                           By:
       ---------------------------                   ---------------------------
       Name:                                         Name:
       Title:                                        Title:




GENERAL ATLANTIC                              GAP COINVESTMENT
     PARTNERS 64, L.P.                             PARTNERS II, L.P.

By:                                           By:
       ---------------------------                   ---------------------------
       Name:                                         Name:
       Title:                                        Title:




SELLING SHAREHOLDERS

By:
       ---------------------------
       Name:
       Title: Attorney-in-fact, acting on behalf
              of the Selling Shareholders who
              executed Powers of Attorney





                                       38


                                     Accepted: _______, 2005

                                     J.P. MORGAN SECURITIES INC.

                                     By:
                                         -------------------------------------
                                         Name:
                                         Title:



                                     MERRILL LYNCH, PIERCE, FENNER
                                       & SMITH INCORPORATED

                                     By:
                                         -------------------------------------
                                         Name:
                                         Title:

                                     For themselves and on behalf of the several
                                     Underwriters listed in Schedule I hereto.







                                       39



                                                                     SCHEDULE I

<Table>
<Caption>
                                                             NUMBER OF INITIAL ADSs     NUMBER OF INITIAL
                     U.S. UNDERWRITERS                       TO BE PURCHASED FROM     ADSs TO BE PURCHASED
                     -----------------                             THE COMPANY           FROM THE SELLING
                                                                                           SHAREHOLDERS
                                                                                 

J.P. Morgan Securities Inc. ...........................

Merrill Lynch, Pierce, Fenner & Smith
               Incorporated ...........................

Lehman Brothers Inc. ..................................


Total..................................................
                                                             ======================    ====================
</Table>


<Table>
<Caption>
                                                             NUMBER OF INITIAL ADSs     NUMBER OF INITIAL
                INTERNATIONAL UNDERWRITERS                    TO BE PURCHASED FROM     ADSs TO BE PURCHASED
                --------------------------                         THE COMPANY           FROM THE SELLING
                                                                                           SHAREHOLDERS
                                                                                 
J.P. Morgan Securities Ltd. ...........................

Merrill Lynch International ...........................

Lehman Brothers International (Europe) ................



Total..................................................
                                                             ======================    ====================
</Table>





                                       40


                                                                    SCHEDULE II

                          LIST OF SELLING SHAREHOLDERS

<Table>
<Caption>
                                                                                NUMBER OF COMMON SHARES
SELLING SHAREHOLDERS                                                        TO BE SOLD IN THE FORM OF ADSs
- ----------------------------------------------------------------- ----------------------------------------------------
                                                                         
   Melody Share Corporation                                                                      876,167
   Tae Won Chey                                                                                  171,638
   Nokia Venture Partners/Blue Run Ventures                                                      445,835
   i-Hatch                                                                                       336,326
   General Atlantic Partners                                                                     102,521
   Mark Caron                                                                                     20,401
   A. Douglas Henderson Revocable Trust                                                               48
   Dan Oakley                                                                                         22
   David Warmflash                                                                                 3,770
   Glenn Dorsey                                                                                      344
   Harto Family Partners, L.P.                                                                     1,833
   James M. Lyon                                                                                      48
   Joel-Andre Ornstein                                                                               533
   K&A Trust                                                                                       1,833
   Lyon, Stubb & Tompkins, Inc.                                                                       48
   Maureen C. Tompkins                                                                               163
   Michael Miller                                                                                  5,607
   Mount Washington Associates, L.L.C.                                                                18
   Parande, S.A.                                                                                   8,570
   Ted Nierenberg                                                                                     17
   The Washington Dinner Club, LLC                                                                23,296
   Vairam Alagappan                                                                                  337
   Dan Nemo                                                                                          625
- ----------------------------------------------------------------- ----------------------------------------------------
   TOTAL                                                                                       2,000,000
- ----------------------------------------------------------------- ----------------------------------------------------
</Table>






                                       41


                                                                   SCHEDULE III

                                  SUBSIDIARIES





                                                                            Company Percentage
Name of Subsidiary                  Jurisdiction of Organization            Ownership
- -----------------------------       ----------------------------            ------------------
                                                                      

PT WiderThan Indonesia              Indonesia                               100%

WiderThan UK Ltd.                   United Kingdom                          100%

WiderThan Americas, Inc             Delaware                                100%
</Table>


                                       42


                                                                    SCHEDULE IV

                   LIST OF PERSONS TO DELIVER A LOCK-UP LETTER
                    IN THE FORM SET FORTH IN EXHIBIT A HERETO


                           [TO BE PROVIDED BY COMPANY]











                                       43



                                                                      ANNEX A-I

                 Form of Opinion of U.S. Counsel for the Company


(i)      The Deposit Agreement has been duly executed and delivered by the
         Company in accordance with the laws of the State of New York and,
         assuming that the Deposit Agreement constitutes a valid and legally
         binding agreement of the Depositary, constitutes a valid and legally
         binding agreement of the Company enforceable in accordance with its
         terms.

(ii)     Assuming the due authorization, execution, issuance and delivery by the
         Depositary of ADRs evidencing the ADSs against the deposit of the
         Shares in accordance with the provisions of the Deposit Agreement and
         payment therefor in accordance with the Underwriting Agreement, such
         ADSs will be duly and validly issued and persons in whose names such
         ADRs are registered will be entitled to the benefits specified therein
         and in the Deposit Agreement.

(iii)    The Underwriting Agreement has been duly executed and delivered by the
         Company in accordance with the laws of the State of New York.

(iv)     The ADSs, the ADRs and the Deposit Agreement conform, in all material
         respect, to the description thereof contained in the Prospectus under
         the caption "Description of American Depositary Shares."

(v)      Based upon the foregoing, and subject to the qualifications,
         assumptions and limitations herein, and in the Registration Statement,
         we hereby confirm our opinion set forth in the Registration Statement
         under the caption "Taxation -- U.S. federal income tax considerations."

(vi)     [The deposit of the Shares and the issuance of the ADRs pursuant to the
         Deposit Agreement, the issuance and sale of the ADSs pursuant to the
         Underwriting Agreement, the performance by the Company of its
         obligations under the Underwriting Agreement, and the performance by
         the Company of its obligations under the Deposit Agreement will not
         result in any violation of any U.S. federal or New York state statute
         or any rule or regulation known to us and applicable to the Company, or
         any order issued pursuant to any U.S. federal or New York state statute
         by any U.S. federal or New York state governmental agency or body.]

(vii)    [No consent, approval, authorization, order, registration or
         qualification of or with any U.S. federal or New York governmental
         agency or body is required for the deposit of the Shares and the
         issuance of the ADRs pursuant to the Deposit Agreement, the issuance
         and sale of the ADSs pursuant to the Underwriting Agreement, the
         performance by the Company of its obligations under the Underwriting
         Agreement and


                                   Annex A-1-1


         the Deposit Agreement, except such as have been obtained and made under
         the Securities Act of 1933 (the "ACT") and such as may be required
         under state securities laws. ]

(viii)   The Registration Statements and the ADS Registration Statement have
         been declared effective under the Act and, to our knowledge, no stop
         order suspending the effectiveness of the Registration Statements or
         the ADS Registration Statement has been issued or threatened by the
         Commission.

(ix)     Under the laws of the State of New York relating to personal
         jurisdiction, the Company has, pursuant to Section 15 of the
         Underwriting Agreement and Section [ ] of the Deposit Agreement,
         validly and irrevocably submitted to the personal jurisdiction of any
         state or federal court located in the Borough of Manhattan, The City of
         New York, New York (each a "New York Court" in any action arising out
         of or relating to the Underwriting Agreement or the Deposit Agreement
         or the transactions contemplated hereby or thereby, has validly and
         irrevocably waived any objection to the venue of a proceeding in any
         such court, and has validly and irrevocably appointed WiderThan
         Americas Inc. at 11 42nd Street, 11th Floor, New York, New York 10036
         as its authorized agent for the purpose described in Section 15 of the
         Underwriting Agreement and Section [ ] of the Deposit Agreement; and
         service of process effected on such agent in the manner set forth in
         Section 15 of the Underwriting Agreement and Section [ ] of the Deposit
         Agreement will be effective to confer valid personal jurisdiction over
         the Company.

(x)      The Company is not and, after giving effect to the offering and sale of
         the Offered Securities and the application of the proceeds thereof as
         described in the Prospectus, will not be "investment company" as
         defined in the Investment Company Act of 1940.

(xi)     The Registration Statement, the ADS Registration Statement and the
         Prospectus, and each amendment or supplement thereto, as of their
         respective effective or issue dates, complied as to form in all
         material respects with the requirements of the Act and the rules and
         regulations thereunder; we have no reason to believe that any part of
         the Registration Statement and the ADS Registration Statement, and each
         amendment thereto, as of its effective date or as of the date of this
         opinion, contained any untrue statement of a material fact or omitted
         to state any material fact required to be stated therein or necessary
         to make the statements therein not misleading; or that the Prospectus
         or any amendment or supplement thereto, as of its issue date or as of
         the date of this opinion, contained any untrue statement of a material
         fact or omitted to state any material fact necessary in order to make
         the statements therein, in the light of the circumstances under which
         they were made, not misleading; the descriptions in the Registration
         Statements, the ADS Registration Statement and Prospectus of statutes,
         legal and governmental proceedings and contracts and other documents
         are accurate and fairly present the information required to be shown;
         and we do not know of any legal or governmental proceedings required to
         be described in the Registration Statement, the ADS Registration
         Statement or the Prospectus which are not described as required or of
         any contracts or documents of a character required to be described in



                                   Annex A-1-2


         the Registration Statement, the ADS Registration Statement or the
         Prospectus or to be filed as exhibits to the Registration Statement or
         the ADS Registration Statement which are not described and filed as
         required; it being understood that we express no opinion as to the
         financial statements or other financial data contained in the
         Registration Statement, the ADS Registration Statement or the
         Prospectus.





                                   Annex A-1-3



                                                                     ANNEX A-II

        Form of Opinion of International Counsel for Selling Shareholders


1.       The [Company/Partnership] is duly registered under the laws of
         [jurisdiction];

2.       The [Company/Partnership] has the power and authority to enter into,
         and to exercise its rights and perform its contemplated obligations
         under the Agreements;

3.       The Underwriting Agreement has been duly and validly authorized,
         executed and delivered by or on behalf of each of the Selling
         Shareholders;

4.       The Custody Agreement and the Power of Attorney of each Selling
         Shareholder have been duly authorized, executed and delivered by such
         Selling Shareholder and are valid and legally binding agreements of
         such Selling Shareholder;

5.       The deposit of the Shares by such Selling Shareholder with the
         Depositary against issuance of the ADRs evidencing the ADSs to be
         delivered by such Selling Shareholder, the sale of the ADSs sold by
         each of the Selling Shareholders, and the execution and delivery by
         such Selling Shareholder of, and the performance by such Selling
         Shareholder of its obligations under, the Underwriting Agreement, the
         Power of Attorney and the Custody Agreement and the consummation of the
         transaction contemplated thereby will not result in a breach or
         violation of any of the terms and provisions of, or constitute a
         default under, any statute, any rule, regulation or order of any
         [jurisdiction] governmental agency or body or any court in
         [jurisdiction] having jurisdiction over the [Company/Partnership]or any
         of the properties or any agreement or instrument to which the
         [Company/Partnership]is a party or by which the [Company/Partnership]
         is bound or to which any of the properties of the [Company/Partnership]
         is subject or the charter, by-laws or other organizational documents of
         such Selling Shareholder;

6.       No Governmental Authorization of the [specific government] is required
         for the execution, delivery and performance of the Underwriting
         Agreement, the Custody Agreement and the Power of Attorney by each of
         the Selling Shareholders and consummation of the transactions
         contemplated thereby including the sale of the ADSs by the Selling
         Shareholders or the deposit of the Ordinary Shares with the Depositary
         against issuance of the ADSs evidencing the ADRs to be delivered at the
         Closing Date;

7.       Each of the Selling Shareholders has validly submitted to the personal
         jurisdiction of any state or federal court located in the Borough of
         Manhattan, The City of New York in any action arising out of or
         relating to the Underwriting Agreements and the transactions
         contemplated therein and has validly and effectively waived any
         objection to the venue of a proceeding in any such court as provided in
         Section 15



                                   Annex A-2-1

         of the Underwriting Agreement; each Selling Shareholder that is not
         domiciled in the U.S. has irrevocably designated and appointed
         WiderThan Americas, Inc. as its authorized agent for the purpose
         described in Section 15 of the Underwriting Agreement; and service of
         process in the manner set forth in Section 15 of the Underwriting
         Agreement is effective to confer valid personal jurisdiction over the
         Selling Shareholders;

8.       Each of the Selling Shareholder is the sole owner of the Shares to be
         sold by it and has the full right, power and authority to sell, assign,
         transfer and deliver such Shares in the form of ADSs pursuant to this
         Agreement; such Selling Shareholder has, and immediately prior to each
         Closing Date, as applicable, will have, good and valid title to such
         Shares, free and clear of all liens, encumbrances, equities or claims;
         and upon the sale and delivery to the Underwriters of such ADSs and
         payment therefor, pursuant to this Agreement, good and valid title to
         such ADSs, free and clear of all liens, encumbrances, equities or
         claims, will be freely transferable by the Selling Shareholder to the
         Underwriters;




                                   Annex A-1-2





                                                                        ANNEX B

                Form of Opinion of Korean Counsel to the Company
                          and the Selling Shareholders


(i)      The Company and each of its Korean subsidiaries have been duly
         organized and are validly existing under the laws of Korea, are duly
         qualified to do business in Korea, and have all power and authority
         necessary to own or hold their respective properties and to conduct the
         businesses in which they are engaged, except where the failure to be so
         qualified or have such power or authority would not, individually or in
         the aggregate, have a Material Adverse Effect.

(ii)     The Company has an authorized capitalization as set forth in the
         Prospectus under the heading "Capitalization" all of the issued and
         outstanding shares of capital stock of the Company have been duly and
         validly authorized and issued and are fully paid and non-assessable;
         the capital stock of the Company conforms in all material respects to
         the description thereof contained in the Prospectus; and all of the
         issued and outstanding shares of capital stock or other equity
         interests of each Korean subsidiary of the Company have been duly and
         validly authorized and issued, are fully paid and non-assessable and
         the Company directly owns approximately the percentage of the issued
         and outstanding capital stock of each Korean subsidiary set out in
         Schedule II of the Underwriting Agreement.

(iii)    The stockholders of the Company have no outstanding rights (including,
         without limitation, pre-emptive rights), warrants or options to
         acquire, or instruments convertible into or exchangeable for, any
         shares of capital stock or other equity interests of the Company, or
         any contract, commitment, agreement, understanding or arrangement of
         any kind relating to the issuance of any capital stock of the Company,
         any such convertible or exchangeable securities or any such rights,
         warrants or options (except for employee stock option plans existing on
         the date hereof for the Company). Except as set forth in the
         Registration Statement and the Prospectus, the Shares may be freely
         deposited with the Korea Securities Depository for the account and
         benefit of the Depositary against issuance of ADRs evidencing ADSs; the
         Shares and ADSs are freely transferable by the Company to or for the
         account of the several Underwriters and are freely transferable by the
         several Underwriters to the initial purchasers thereof; and there are
         no restrictions on subsequent transfers of the Shares or ADSs under the
         laws of Korea or the Deposit Agreement.

(iv)     Each of the Selling Shareholders has valid and unencumbered title to
         the Shares to be sold in the form of ADSs pursuant to the Underwriting
         Agreement.

(v)      All dividends and other distributions declared and payable on the
         shares of capital stock of the Company (including any such dividends or
         distributions to be paid to the Depositary) to a non-resident of Korea
         who legitimately holds such shares may under the current laws and
         regulations of Korea be converted into foreign currency that may



                                    Annex B-1


         be remitted out of Korea, subject to the requirement to submit relevant
         documents to the designated foreign exchange bank in Korea to verify
         (x) that the amount being remitted conforms to the amount required to
         be paid, and (y) whether or not any necessary approval or report
         requirement, if any, has been met. There is no preference in respect of
         dividends or of amounts payable in the event of any voluntary or
         involuntary liquidation or dissolution of the Company among the Common
         Shares and other outstanding shares of capital stock of the Company and
         all holders (on the record date) of such Common Shares will be
         entitled, on the same basis as such other outstanding shares of capital
         stock of the Company, to payment of full dividends, if any such
         dividends are declared.

(vi)     The Company has full right, power and authority to execute and deliver
         each of the Transaction Documents and to perform its obligations
         thereunder; and all action required to be taken for the due and proper
         authorization, execution and delivery of each of the Transaction
         Documents and the consummation of the transactions contemplated thereby
         have been duly and validly taken. The Underwriting Agreement has been
         duly authorized, executed and delivered by the Company. The Deposit
         Agreement has been duly authorized, executed and delivered by the
         Company and constitutes a valid and binding agreement of the Company,
         enforceable against the Company in accordance with its terms.

(vii)    Each of the Selling Shareholders has all necessary power and authority
         to execute and deliver the Underwriting Agreement and perform its
         obligations thereunder, and the Underwriting Agreement has been duly
         authorized, executed and delivered by each of the Selling Shareholders.

(viii)   As of [DATE], which was the most recent date on which the register of
         the Company's shareholders was closed, each of the Selling Shareholders
         (NAME OF SELLING SHAREHOLDERS) was registered as a holder of [NUMBER]
         Common Shares [and [NUMBER] Common Shares, respectively,] and there was
         no registration of any pledge, lien, encumbrance or any similar claim
         on such shares on the registry of shareholders of the Company.

(ix)     Based on the assumption that, at the time of the transfer by the
         Selling Shareholders to the Custodian for the Depositary of the Shares
         underlying the ADSs and the payment by the Underwriters therefor
         pursuant to the Underwriting Agreement, neither the Depositary nor the
         Underwriters are aware, of any adverse claims relating to the Selling
         Shareholders' ownership of such Shares, the Depositary will, upon
         transfer by the Selling Shareholder[s] to the Custodian for the
         Depository of the Shares underlying the ADSs and payment by the
         Underwriters therefor in the manner provided for in the Underwriting
         Agreement, acquire good and valid title to the Shares free and clear of
         any pledge, lien, encumbrance, equity or claim.

(x)      To ensure the validity, enforceability or admissibility into evidence
         of the Underwriting Agreement, the ADSs or the Deposit Agreement, it is
         not necessary that the Underwriting Agreement, the ADSs or the Deposit
         Agreement or any other


                                    Annex B-2


         document to be furnished thereunder be filed or recorded with any court
         or other authority in Korea or that any tax of Korea (other than stamp
         tax) or any political subdivision thereof be paid on or in respect of
         any such document, provided that in order to be admissible in a Korean
         court, the above referenced documents should be accompanied by a Korean
         language translation thereof.

(xi)     The deposit of the Shares with the Depositary against receipt of ADRs
         evidencing the ADSs, the sale of the Shares and the issue of the ADSs
         and the performance by the Company of its obligations under the
         Underwriting Agreement, any options to purchase additional Shares
         thereunder and the Deposit Agreement, the execution and delivery by the
         Company of the Underwriting Agreement and the Deposit Agreement and the
         consummation of the transactions therein contemplated, to the best of
         our knowledge, will not conflict with or result in a breach or
         violation of any of the terms or provisions of, or constitute a default
         (or an event which with notice or lapse of time, or both, would
         constitute a default) or give rise to any right to accelerate the
         maturity or require the prepayment or require consent under, or result
         in the creation or imposition of any lien, charge or encumbrance upon
         any property or assets of the Company pursuant to the terms of, any
         indenture, mortgage, deed of trust, loan agreement or other agreement
         or instrument to which the Company is a party or by which the Company
         is bound or to which any of the property or assets of the Company is
         subject; nor will such actions result in any violation of, or conflict
         with, the provisions of the articles of incorporations of the Company
         or any other statute, law, order, decree, rule or regulation having the
         force of law of any court or governmental agency or body having
         jurisdiction over the Company or any of its properties or assets.

(xii)    The sale of the Shares underlying the ADSs to be sold by each of the
         Selling Shareholders under the Underwriting Agreement and the
         performance by such Selling Shareholder of its obligations under the
         Underwriting Agreement, the execution and delivery of the Underwriting
         Agreement and the consummation of the transactions by each of the
         Selling Shareholders contemplated in the Underwriting Agreement, will
         not result in any violation of, or conflict with the provisions of the
         articles of incorporations of such Selling Shareholder or any other
         statute, law, order, decree, rule or regulation having the force of law
         of any court or governmental agency or body having jurisdiction over
         such Selling Shareholder.

(xiii)   No consent, approval, authorization or order of, or qualification with,
         any governmental body or agency of Korea is required under Korean law
         for the deposit of the Shares with the Depositary against receipt of
         ADRs evidencing the ADSs, the issue and sale of the ADSs and the
         performance by each of the Company or the Selling Shareholders of its
         obligations under the Underwriting Agreement and the Deposit Agreement,
         as the case may be, except for (i) the written report filed with the
         Ministry of Finance and Economy of Korea which has been filed and (ii)
         the registration of the issuance of the Shares with the registry
         offices of the competent Korean courts having jurisdiction over the
         Company which is required to be made within two weeks from the issue of
         the Shares.


                                    Annex B-3



(xiv)    The statements of Korean law set forth in the Prospectus and the
         Registration Statement under the captions "Risk Factors", "Business",
         "Management," "Principal Shareholders", Description of Capital Stock",
         "Korean Foreign Exchange Controls and Securities Regulations" and
         "Enforceability of Civil Liability" are true and correct in all
         material respects.

(xv)     The statements set forth in the Prospectus and the Registration
         Statement under the heading "Taxation--Korean Taxation" insofar as such
         statements purport to summarize material Korean tax laws relating to
         the ADSs, provide a complete, fair and accurate summary of the material
         Korean tax consequences of an investment in the ADSs by certain
         non-residents of Korea.

(xvi)    The Registration Statement and the ADS Registration Statement and the
         filing of the Registration Statement and the ADS Registration Statement
         with the Commission have been duly authorized by and on behalf of the
         Company; and each of the Registration Statement and the ADS
         Registration Statement has been duly executed pursuant to such
         authorization by and on behalf of the Company.

(xvii)   Each Transaction Document conforms in all material respects to the
         description thereof contained in the Registration Statement and the
         Prospectus.

(xviii)  The Company and its Korean subsidiaries own, possess or have obtained
         all licenses, certificates, permits and other authorizations issued
         from, and have made all declarations and filings with, the appropriate
         governmental or regulatory authorities that are necessary for the
         ownership or lease of their properties or the conduct of their
         businesses in Korea, as described in the Registration Statement and the
         Prospectus, except where the failure to possess or make the same would
         not, individually or in the aggregate, have a Material Adverse Effect;
         and except as described in the Registration Statement and the
         Prospectus, the Company or any of its Korean subsidiaries has not
         received notice of any revocation or modification of any such license,
         certificate, permit or authorization or has any reason to believe that
         any such license, certificate, permit or authorization will not be
         renewed in the ordinary course.

(xix)    The Company and its Korean subsidiaries own, are licensed or possess
         adequate rights to use all Intellectual Property necessary for the
         conduct of their respective businesses; and the conduct of their
         respective businesses will not conflict in any material respect with
         any such rights of others, and neither the Company nor any of its
         Korean subsidiaries has received any notice of any claim of
         infringement or conflict with any such rights of others except those
         that (i) do not materially interfere with the use made and proposed to
         be made of such Intellectual Property by the Company or (ii) could not
         reasonably be expected, individually or in the aggregate, to have a
         Material Adverse Effect.

(xx)     The Company and its Korean subsidiaries have good and marketable title
         to all real property and good and marketable title to, or have a valid
         right to lease or otherwise use, all items of real and personal
         property that are material to the respective businesses


                                    Annex B-4


         of the Company and its Korean subsidiaries, in each case free and clear
         of all liens, encumbrances, claims, defects and imperfections of title,
         except those that (i) do not materially interfere with the use made and
         proposed to be made of such property by the Company or its Korean
         subsidiaries or (ii) could not reasonably be expected, individually or
         in the aggregate, to have a Material Adverse Effect.

(xxi)    Under the laws of Korea, each holder of ADRs evidencing ADSs issued
         pursuant to the Deposit Agreement shall be entitled, subject to the
         Deposit Agreement, to seek enforcement of its rights as legal owner of
         the Shares underlying the ADSs through the Depositary or its nominee
         registered as representative of the beneficial owners of the ADSs in a
         suit, action or proceeding against the Company.

(xxii)   Other than as described in the Registration Statement and the
         Prospectus, no governmental approvals are currently required in Korea
         in order for the Company to pay cash dividends or other distributions
         declared by the Company to holders of Common Stock, including the
         Depositary or its nominee, or for the conversion by the Depositary of
         any cash dividends paid in Won to U.S. dollars or the repatriation
         thereof out of Korea and no other withholding or other taxes under the
         laws and regulations of Korea will be imposed in connection with the
         declaration and payment by the Company of dividends and other
         distributions in respect of shares of its capital stock.

(xxiii)  Each of the Company and the Selling Shareholders would not, under the
         laws of Korea, be entitled to plead, or cause to be pleaded on its
         behalf, sovereign immunity with respect to any of its obligations under
         the Deposit Agreement, the Underwriting Agreement, the ADSs or the
         ADRs.

(xxiv)   Each of the Company and the Selling Shareholders has the power, under
         the laws of Korea, to submit, and has taken all necessary action
         (corporate or otherwise) to submit, including, to the extent necessary
         under the laws of Korea, a valid waiver of immunity, to the
         jurisdiction of any New York Courts, and to appoint, and has taken all
         necessary action (corporate or otherwise) to appoint, WiderThan USA as
         the authorized agent of each of the Company and the Selling
         Shareholders, respectively, for the purposes and to the extent
         described in the Underwriting Agreement and the Deposit Agreement, as
         the case may be. Under the laws of Korea, neither the Company nor the
         Selling Shareholders nor any of their respective properties or assets,
         whether in the United States or in Korea, is immune from any attachment
         in aid of execution of, or from execution upon, any judgment of any
         such court.

(xxv)    The Underwriters would be permitted to commence actions or proceedings
         in Korean courts of competent jurisdiction based on the Underwriting
         Agreement and the Deposit Agreement and the holders of the Shares or
         the ADSs would be permitted to commence proceedings in Korean courts of
         competent jurisdiction over any such action or proceeding, and such
         Korean courts would recognize the agreement to the choice of law
         provisions set forth in the Underwriting Agreement and the Deposit
         Agreement insofar as the choice of law provisions thereof are valid
         under the law so chosen and the application of relevant provisions of
         the law so chosen is not manifestly contrary to the



                                    Annex B-5


         public policy of Korea; provided that, in case any legal proceeding is
         brought in a Korean court, the Korean court would apply (i) Korean law
         bearing upon the capacity of a Korean party to enter into contracts and
         (ii) the laws of Korea which should be mandatorily applied by their
         nature irrespective of the governing law.

(xxvi)   If any judgment of a competent court outside Korea was rendered against
         the Company or the Selling Shareholders in connection with any action
         arising out of or relating to the Underwriting Agreement, the Deposit
         Agreement or the ADRs, as the case may be, the courts of Korea will
         recognize such judgment as a valid judgment and enforce such judgment
         without re-examination of the merits; provided, that (a) such judgment
         was finally and conclusively given by a court having valid jurisdiction
         in accordance with the international jurisdiction principles under
         Korean law and applicable treaties, (b) the Company or the Selling
         Shareholders was duly served with service of process (other than by
         publication or similar means) in sufficient time to enable the Company
         or the Selling Shareholders to prepare its defense in conformity with
         applicable laws (provided that service of process by mail as
         contemplated under Section [ ] of the Deposit Agreement may not be
         considered duly served) or responded to the action without being served
         with process, (c) recognition of such judgment is not contrary to the
         public policy of Korea, and (d) judgments of the courts of Korea are
         accorded reciprocal treatment under the laws of the jurisdiction which
         renders such judgment.

(xxvii)  Except as set forth in the Prospectus and the Registration Statement,
         assuming that neither the Underwriting Agreement nor the Deposit
         Agreement is executed and delivered in Korea, no stamp or other
         issuance or transfer taxes or duties, and no capital gains, income,
         withholding or other taxes, are payable by or on behalf of the
         Underwriters to Korea or any political subdivision or taxing authority
         thereof or therein (other than Korean tax payable by reason of the fact
         that its income generally is subject to tax in the Korea) in connection
         with (i) the deposit with the Depositary of the Common Shares against
         issuance of the ADRs evidencing the ADSs, (ii) the transfer by the
         Selling Shareholders of the Common Shares underlying the ADSs to be
         sold by the Selling Shareholders in the manner contemplated by the
         Underwriting Agreement, (iii) the sale and transfer of ADSs to the
         Underwriters (except payment of selling concessions and underwriting
         concessions payable to the Underwriters, as to which we express no
         view) or (iv) the sale and delivery outside Korea by the Underwriters
         of ADSs to the purchasers thereof in the manner contemplated in the
         Underwriting Agreement and the Prospectus and the Registration
         Statement, except that Korean stamp tax, nominal in amount, must be
         paid if certain agreements are executed in Korea.

(xxviii) It is not necessary under the laws of Korea (i) to enable the
         Underwriters, any holder of ADSs or the Depositary, or any or all of
         them, to enforce their respective rights under the Underwriting
         Agreement, Deposit Agreement, the ADSs or any other document to be
         furnished hereunder, provided that they are not otherwise engaged in
         business in Korea, or (ii) solely by reason of the execution, delivery
         or consummation of any of the Underwriting Agreement, the Deposit
         Agreement, the ADSs or any other documents to


                                    Annex B-6


         be furnished thereunder, that any Underwriters, any holder of ADSs or
         the Depositary be licensed, qualified or entitled to carry out business
         in Korea.

(xxix)   No Underwriter or holder of ADSs will be deemed resident, domiciled,
         carrying on business or subject to taxation in Korea solely by reason
         of the execution, delivery, consummation or enforcement of the
         Underwriting Agreement, the Deposit Agreement, the ADSs or any other
         document to be furnished thereunder, provided that the execution,
         delivery, consummation or enforcement of such document by the
         Underwriters and the holder of Common Shares or ADSs takes place
         outside of Korea.

(xxx)    Other than as set forth in the Prospectus and the Registration
         Statement, there are no legal, governmental or regulatory
         investigations, actions, suits or proceedings pending to which the
         Company or any of its subsidiaries is or may be a party or to which any
         property of the Company or any of its subsidiaries is or may be the
         subject that, individually or in the aggregate, could have a material
         adverse effect on the business, properties, management, financial
         position, stockholders' equity, results of operations or prospects of
         the Company or on the performance by the Company of its obligations
         under the Underwriting Agreement, the Deposit Agreement, and the ADSs;
         and to the best of our knowledge, no such investigations, actions,
         suits or proceedings are threatened or, contemplated by any
         governmental or regulatory authority or threatened by others.

(xxxi)   Neither the Company nor any of its subsidiaries is (i) in violation of
         its articles of incorporation or by-laws or similar organizational
         documents; (ii) in default, and no event has occurred that, with notice
         or lapse of time or both, would constitute such a default, in the due
         performance or observance of any term, covenant or condition contained
         in any indenture, mortgage, deed of trust, loan agreement or other
         agreement or instrument to which the Company or any of its subsidiaries
         is a party or by which the Company or any of its subsidiaries is bound
         or to which any of the property or assets of the Company or any of its
         subsidiaries is subject; or (iii) in violation of any law or statute or
         any judgment, order, rule or regulation of any court or arbitrator or
         governmental or regulatory authority.

(xxxii)  We have no reason to believe that any part of the Registration
         Statement and the ADS Registration Statement, and each amendment
         thereto, as of its effective date or as of the date of this opinion,
         contained any untrue statement of a material fact or omitted to state
         any material fact required to be stated therein or necessary to make
         the statements therein not misleading; or that the Prospectus or any
         amendment or supplement thereto, as of its issue date or as of the date
         of this opinion, contained any untrue statement of a material fact or
         omitted to state any material fact necessary in order to make the
         statements therein, in the light of the circumstances under which they
         were made, not misleading; it being understood that we express no
         opinion as to the financial statements or other financial data
         contained in the Registration Statement, the ADS Registration Statement
         or the Prospectus.



                                    Annex B-7



                                                                        ANNEX C

                  Form of Opinion of Counsel to the Depositary



(i)      the Deposit Agreement has been duly authorized, executed and delivered
         by the Depositary and constitutes a valid and legally binding
         obligation of the Depositary and is enforceable against the Depositary
         in accordance with its terms, except insofar as enforceability may be
         limited by (a) applicable bankruptcy, insolvency, fraudulent
         conveyance, reorganization, moratorium or other laws relating to or
         affecting creditors' rights generally and (b) general principles of
         equity (whether considered in an action at law or in equity); and

(ii)     when ADRs evidencing ADSs are issued in accordance with the Deposit
         Agreement against the deposit, pursuant to the terms of the Deposit
         Agreement, of duly authorized, validly issued, fully paid and
         nonassessable Shares of the Company, the preemptive rights, if any,
         with respect to which have been validly waived or exercised, such ADRs
         will be validly issued and will entitle the Holders to the rights
         specified therein and in the Deposit Agreement.




                                    Annex C-1


                                                                        ANNEX D

                Form of Opinion of General Counsel of the Company


(i)      WiderThan Americas, Inc. is a corporation duly organized, validly
         existing and in good standing under the laws of Delaware, and has all
         corporate power required to own or hold its properties and to carry on
         its business as now conducted.

(ii)     Except as described in the Prospectus, there are no contracts,
         agreements or understandings known to me between the Company and any
         person granting such person the right to require the Company to file a
         registration statement under the Act with respect to any securities of
         the Company owned or to be owned by such person or to require the
         Company to include such securities in the securities registered
         pursuant to the Registration Statement or in any securities being
         registered pursuant to any other registration statement filed by the
         Company under the U.S. Securities Act of 1933.



                                    Annex D-1





                                                                      EXHIBIT A

                            FORM OF LOCK-UP AGREEMENT

                                                     ____________________, 2005


MERRILL LYNCH & CO.
Merrill Lynch, Pierce, Fenner & Smith
               Incorporated
J.P. MORGAN SECURITIES INC.
     as Representatives of the several
     Underwriters to be named in the
     within-mentioned Underwriting Agreement

c/o Merrill Lynch & Co.
     Merrill Lynch, Pierce, Fenner & Smith
     Incorporated
     250 Vesey Street
     4 World Financial Center
     New York, New York  10080


         Re:      Proposed Public Offering by WiderThan Co., Ltd.



Dear Sirs:

         The undersigned understands that Merrill Lynch & Co., Merrill Lynch,
Pierce, Fenner & Smith Incorporated and J.P. Morgan Securities Inc. (together,
the "Representatives") propose to enter into an Underwriting Agreement (the
"Underwriting Agreement") with WiderThan Co., Ltd., a corporation with limited
liability established under the laws of The Republic of Korea (the "Company")
and each of the Selling Shareholders named in Schedule II of the Underwriting
Agreement, providing for the public offering of shares (the "Securities") of the
Company's common stock, par value W500 per share (the "Common Stock"). In
recognition of the benefit that such an offering will confer upon the
undersigned, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the undersigned agrees with each
underwriter to be named in the Underwriting Agreement that, during a period of
180 days from the date of the Underwriting Agreement, the undersigned will not,
without the prior written consent of the Representatives, directly or
indirectly, (i) offer, sell, contract to sell, announce the intention to sell,
issue, pledge, lend, grant any option, right or warrant for the sale of, or
otherwise dispose of or transfer (each, collectively, a "Sale"), any shares of
the Company's Common Stock, or any depositary shares representing such Common
Stock, or any securities convertible into or exchangeable or exercisable for
Common Stock, or any depositary shares representing such Common Stock, whether
now owned or hereafter acquired by the undersigned or with respect to which the
undersigned has or hereafter acquires the power of disposition, or file, or
cause to be filed, any registration statement under the Securities Act of 1933,
as amended, with respect to any of the foregoing (collectively, the "Lock-Up
Securities") or (ii) enter into any swap or any other agreement or any
transaction that transfers, in whole or in part, directly or indirectly,


                                   Exhibit A-1


the economic consequences of ownership (each, collectively, a "Transfer") of the
Lock-Up Securities, whether any such transaction described in clauses (i) or
(ii) above is to be settled by delivery of Common Stock or other securities, in
cash or otherwise. The foregoing restriction shall not apply to (A) any Sale or
Transfer of the Lock-Up Securities pursuant to the Underwriting Agreement, (B)
any conversion of the Company's preferred stock outstanding as of the date
hereof into Common Stock, (C) any exercise of stock options existing on the date
hereof, (D) any Sale or Transfer of Lock-Up Securities to the partners of the
undersigned, if the undersigned is a partnership, or to the members of the
undersigned, if the undersigned is a limited liability company, and (E) any Sale
or Transfer of Lock-Up Securities to a family member, family partnership or
trust, any Transfer upon the death of a family member to his or her executors,
legatees or beneficiaries or a bona fide gift, provided that in the cases of
(B), (C), (D) and (E) above, any such transferee shall agree to be bound in
writing by the terms of the restrictions in this Agreement with respect to the
Lock-Up Securities during the remainder of the aforesaid 180-day period. The
foregoing restriction is expressly agreed to preclude the undersigned from
engaging in any hedging or other transaction which is designed to or which
reasonably could be expected to lead to or result in a sale or disposition of
the Lock-up Securities, even if such Lock-up Securities would be disposed of by
someone other than the undersigned. Such prohibited hedging or other
transactions would include, without limitation, any short sale or any purchase,
sale or grant of any right (including without limitation any put or call option)
with respect to any of the Lock-up Securities or with respect to any security
that includes, relates to, or derives any significant part of its value from
such securities.

         Notwithstanding the foregoing, if:

         (1) during the last 17 days of the 180-day lock-up period, the Company
         issues an earnings release or material news or a material event
         relating to the Company occurs; or

         (2) prior to the expiration of the 180-day lock-up period, the Company
         announces that it will release earnings results or becomes aware that
         material news or a material event will occur during the 16-day period
         beginning on the last day of the 180-day lock-up period,

the restrictions imposed by this letter shall continue to apply until the
expiration of the 18-day period beginning on the issuance of the earnings
release or the occurrence of the material news or material event, as applicable,
unless the Representatives waive, in writing, such extension.

         The undersigned hereby acknowledges and agrees that written notice of
any extension of the 180-day lock-up period pursuant to the previous paragraph
will be delivered by the Representatives to the Company as further set forth in
the Underwriting Agreement and that any such notice properly delivered will be
deemed to have been given to, and received by, the undersigned. The undersigned
further agrees that, prior to engaging in any transaction or taking any other
action that is subject to the terms of this lock-up agreement during the period
from the date of this lock-up agreement to and including the 34th day following
the expiration of the initial 180-day lock-up period, it will give notice
thereof to the Company and will not consummate such transaction or take any such
action unless it has received written confirmation from the Company that the
180-day lock-up period (as may have been extended pursuant to the previous
paragraph) has expired.



                                   Exhibit A-2



                                          Very truly yours,


                                          Signature:
                                          --------------------------------------

                                          Print Name:
                                          --------------------------------------






                                   Exhibit A-3