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                                                                   EXHIBIT 4.2.2

THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR INVESTMENT
AND HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 OR ANY STATE
SECURITIES LAWS. SUCH SECURITIES MAY NOT BE SOLD OR TRANSFERRED IN THE ABSENCE
OF SUCH REGISTRATION OR AN EXEMPTION THEREFROM UNDER SAID ACT AND ANY APPLICABLE
STATE SECURITIES LAWS.

                                   SUPERCEDING
                      WARRANT TO PURCHASE 4,500,000 SHARES
                               OF COMMON STOCK OF
                        LEAP WIRELESS INTERNATIONAL, INC.
                         (VOID AFTER SEPTEMBER 23, 2008)

        This certifies that QUALCOMM Incorporated, a Delaware corporation, or
its assigns ("QUALCOMM" or the "Holder"), for value received, is entitled to
purchase from LEAP WIRELESS INTERNATIONAL, INC., a Delaware corporation (the
"Company"), having a place of business at 10307 Pacific Center Court, San Diego,
California, up to 4,500,000 fully paid and nonassessable shares (as adjusted for
the stock split to be effected on or about September 14, 1998) of the Company's
Common Stock ("Common Stock") at a per share price (the "Stock Purchase Price")
equal to the average price of the last sales price per share of the Company's
Common Stock on the Nasdaq National Market for each of the five (5) consecutive
trading days (provided if no such sale is made on any of such trading days, then
the last sales price per share for such day(s) shall be deemed to be the last
sales price per share on the closest preceding day on which a sale was made)
beginning with and including September 23, 1998 (the "Effective Date"), any time
or from time to time up to and including 5:00 p.m. (Pacific time) on the date
that is ten (10) years from the date of this Warrant (the "Expiration Date"),
subject to the terms and conditions of this Warrant hereinafter set forth. The
Company agrees that it will calculate the Stock Purchase Price as soon as
practicable (which calculation shall be subject to approval by the Holder, which
may not unreasonably be withheld); and upon presentation of this Warrant to the
Company by the Holder, the Company shall attach to this Warrant a Schedule that
sets forth the Stock Purchase Price and the calculation thereof (and such
Schedule shall constitute a part hereof).

        This Warrant is subject to the following terms and conditions:

        1. EXERCISE; ISSUANCE OF CERTIFICATES; PAYMENT FOR SHARES.

               1.1 GENERAL. This Warrant is exercisable at the option of the
holder of record hereof, at any time or from time to time, up to the Expiration
Date for all or any part of the shares of Common Stock (but not for a fraction
of a share) which may be purchased hereunder. The Company agrees that the shares
of Common Stock purchased under this Warrant shall be and are deemed to be
issued to the Holder hereof as the record owner of such shares as of the close
of business on the date on which this Warrant shall

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have been surrendered properly endorsed, a completed, executed Form of
Subscription shall have been delivered, and payment shall have been made for
such shares in accordance with the Subscription Form in the form of cash,
cancellation of indebtedness of the Company, delivery to the Company of Common
Stock of the Company having a fair market value as of the date of exercise equal
to the Stock Purchase Price times the number of shares to be received upon
exercise, or in any other form of consideration approved by the Board of
Directors of the Company. Certificates for the shares of Common Stock so
purchased, together with any other securities or property to which the Holder
hereof is entitled upon such exercise, shall be delivered to the Holder hereof
by the Company at the Company's expense within a reasonable time after the
rights represented by this Warrant have been so exercised. In case of a purchase
of less than all the shares which may be purchased under this Warrant, the
Company shall cancel this Warrant and execute and deliver a new Warrant or
Warrants of like tenor for the balance of the shares purchasable under the
Warrant surrendered upon such purchase to the Holder hereof within a reasonable
time. Each stock certificate so delivered shall be in such denominations of
Common Stock as may be requested by the Holder hereof and shall be registered in
the name of such Holder.

               1.2 NET ISSUE EXERCISE. Notwithstanding any provisions herein to
the contrary, if the fair market value of one share of the Company's Common
Stock is greater than the Stock Purchase Price (at the date of calculation as
set forth below), in lieu of exercising this Warrant for cash, the Holder may
elect to convert this Warrant (in whole or in part) into shares equal to the
value (as determined below) of this Warrant (or the portion thereof being
canceled) by surrender of this Warrant at the principal office of the Company
together with the properly endorsed Form of Subscription and notice of such
election in which event the Company shall issue to the Holder a number of shares
of Common Stock computed using the following formula:

                      X = Y (A-B)
                          -------
                              A

       Where X = the number of shares of Common Stock to be issued to the Holder

                                Y = the number of shares of Common Stock
                                purchasable under the Warrant or, if only a
                                portion of the Warrant is being exercised, the
                                portion of the Warrant being canceled (at the
                                date of such calculation)

                                A = the fair market value of one share of the
                                Company's Common Stock (at the date of such
                                calculation)

                                B = Stock Purchase Price (as adjusted to the
                                date of such calculation)


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For purposes of the above calculation, fair market value of one share of Common
Stock shall be determined as follows:

                      (a) If traded on a securities exchange or the Nasdaq
National Market, the fair market value of the Common Stock shall be deemed to be
the average of the closing or last reported sale prices of the Common Stock on
such exchange or market over the five (5) day period ending five business days
prior to the date the Holder surrenders this Warrant at the principal office of
the Company together with the properly endorsed Form of Subscription (the
"Determination Date");

                      (b) If otherwise traded in an over-the-counter market, the
fair market value of the Common Stock shall be deemed to be the average of the
closing or last reported sale prices of the Common Stock over the five (5) day
period ending five business days prior to the Determination Date;

                      (c) If there is no public market for the Common Stock, or
if a public market has existed for a period less than is necessary for a date
mentioned under subsection (a) or (b) above, then fair market value shall be
determined by mutual agreement of the holder of this Warrant and the Company,
and if the holder and the Company are unable to so agree, at the Company's sole
expense by an investment banker of national reputation selected by the Company
and reasonably acceptable to the holder of this Warrant.

        2. SHARES TO BE FULLY PAID; RESERVATION OF SHARES. The Company covenants
and agrees that all shares of Common Stock which may be issued upon the exercise
of the rights represented by this Warrant will, upon issuance, be duly
authorized, validly issued, fully paid and nonassessable and free from all
preemptive rights of any shareholder and free of all taxes, liens and charges
with respect to the issue thereof. The Company further covenants and agrees
that, during the period within which the rights represented by this Warrant may
be exercised, the Company will at all times have authorized and reserved, for
the purpose of issue or transfer upon exercise of the subscription rights
evidenced by this Warrant, a sufficient number of shares of authorized but
unissued Common Stock, or other securities and property, when and as required to
provide for the exercise of the rights represented by this Warrant. The Company
will take all such action as may be necessary to assure that such shares of
Common Stock may be issued as provided herein without violation of any
applicable law or regulation, or of any requirements of any domestic securities
exchange upon which the Common Stock may be listed. The Company will not take
any action which would result in any adjustment of the Stock Purchase Price (as
set forth in Section 3 hereof) if the total number of shares of Common Stock
issuable after such action upon exercise of all outstanding warrants, together
with all shares of Common Stock then outstanding and all shares of Common Stock
then issuable upon exercise of all options and upon the conversion of all
convertible securities then outstanding, would exceed the total number of shares
of Common Stock then authorized by the Company's Certificate of Incorporation.

        3. ADJUSTMENT OF STOCK PURCHASE PRICE AND NUMBER OF SHARES. The Stock
Purchase Price and the number of shares purchasable upon the exercise of this


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Warrant shall be subject to adjustment from time to time upon the occurrence of
certain events described in this Section 3. Upon each adjustment of the Stock
Purchase Price, the Holder of this Warrant shall thereafter be entitled to
purchase, at the Stock Purchase Price resulting from such adjustment, the number
of shares obtained by multiplying the Stock Purchase Price in effect immediately
prior to such adjustment by the number of shares purchasable pursuant hereto
immediately prior to such adjustment, and dividing the product thereof by the
Stock Purchase Price resulting from such adjustment.

               3.1 SUBDIVISION OR COMBINATION OF STOCK. In case the Company
shall at any time subdivide its outstanding shares of Common Stock into a
greater number of shares, the Stock Purchase Price in effect immediately prior
to such subdivision shall be proportionately reduced, and conversely, in case
the outstanding shares of Common Stock of the Company shall be combined into a
smaller number of shares, the Stock Purchase Price in effect immediately prior
to such combination shall be proportionately increased.

               3.2 DIVIDENDS IN COMMON STOCK, OTHER STOCK, PROPERTY,
RECLASSIFICATION. If at any time or from time to time the holders of Common
Stock (or any shares of stock or other securities at the time receivable upon
the exercise of this Warrant) shall have received or become entitled to receive,
without payment therefor,

                      (a) Common Stock or any shares of stock or other
securities which are at any time directly or indirectly convertible into or
exchangeable for Common Stock, or any rights or options to subscribe for,
purchase or otherwise acquire any of the foregoing by way of dividend or other
distribution, or

                      (b) Common Stock or additional stock or other securities
or property (including cash) by way of spinoff, split-up, reclassification,
combination of shares or similar corporate rearrangement (other than shares of
Common Stock issued as a stock split or adjustments in respect of which shall be
covered by the terms of Section 3.1 above);

then and in each such case, the Holder hereof shall, upon the exercise of this
Warrant, be entitled to receive in addition to the number of shares of Common
Stock receivable thereupon, and without payment of any additional consideration
therefor, the amount of stock and other securities and property (including cash
in the case referred to in clause (b) above) which such Holder would hold on the
date of such exercise had he been the holder of record of such Common Stock as
of the date on which holders of Common Stock received or became entitled to
receive such shares or all other additional stock and other securities and
property. Notwithstanding the foregoing, in the case of a dividend or
distribution described in clause (b) above and any subsequent exercise
hereunder, the Company's Board of Directors may by resolution determine with
respect to such exercise, in its sole discretion, instead of the adjustment
provided above, to adjust the Stock Purchase Price in accordance with the
formula set forth below and to adjust the number of shares of Common Stock
purchasable pursuant hereto upon such exercise as provided in the lead-in
paragraph to this Section 3:



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        B' = B x A - F
                 -----
                   A

where:

        B' = the adjusted Stock Purchase Price

        B = the current Stock Purchase Price

        A = the fair market value of one share of Common Stock (at the date of
the exercise)

        F = the fair market value at the date of exercise of the securities or
property distributed in respect of one share of Common Stock as determined in
good faith by the Board of Directors of the Company.

               3.3 REORGANIZATION, RECLASSIFICATION, CONSOLIDATION, MERGER OR
SALE. If any recapitalization, reclassification or reorganization of the capital
stock of the Company, or any consolidation or merger of the Company with another
corporation, or the sale of all or substantially all of its assets or other
transaction shall be effected in such a way that holders of Common Stock shall
be entitled to receive stock, securities, or other assets or property (an
"Organic Change"), then, as a condition of such Organic Change, lawful and
adequate provisions shall be made by the Company whereby the Holder hereof shall
thereafter have the right to purchase and receive (in lieu of the shares of the
Common Stock of the Company immediately theretofore purchasable and receivable
upon the exercise of the rights represented hereby) such shares of stock,
securities or other assets or property as may be issued or payable with respect
to or in exchange for a number of outstanding shares of such Common Stock equal
to the number of shares of such stock immediately theretofore purchasable and
receivable upon the exercise of the rights represented hereby. In the event of
any Organic Change, appropriate provision shall be made by the Company with
respect to the rights and interests of the Holder of this Warrant to the end
that the provisions hereof (including, without limitation, registration rights
and provisions for adjustments of the Stock Purchase Price and of the number of
shares purchasable and receivable upon the exercise of this Warrant) shall
thereafter be applicable, in relation to any shares of stock, securities or
assets thereafter deliverable upon the exercise hereof. The Company will not
effect any such consolidation, merger or sale unless, prior to the consummation
thereof, the successor corporation (if other than the Company) resulting from
such consolidation or the corporation purchasing such assets shall assume by
written instrument reasonably satisfactory in form and substance to the Holder,
executed and mailed or delivered to the registered Holder hereof at the last
address of such Holder appearing on the books of the Company, the obligation to
deliver to such Holder such shares of stock, securities or assets as, in
accordance with the foregoing provisions, such Holder may be entitled to
purchase.

               3.4 CERTAIN EVENTS. If any change in the outstanding Common Stock
of the Company or any other event occurs as to which the other provisions of
this Section 3 are not strictly applicable or if strictly applicable would not
fairly protect the purchase rights of the Holder of the Warrant in accordance
with such provisions, then the


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Board of Directors of the Company shall make an adjustment in the number and
class of shares available under the Warrant, the Stock Purchase Price or the
application of such provisions, so as to protect such purchase rights as
aforesaid. The adjustment shall be such as will give the Holder of the Warrant
upon exercise for the same aggregate Stock Purchase Price the total number,
class and kind of shares as he would have owned had the Warrant been exercised
prior to the event and had he continued to hold such shares until after the
event requiring adjustment.

               3.5    NOTICES OF CHANGE.

                      (a) Immediately upon any adjustment in the number or class
of shares subject to this Warrant or of the Stock Purchase Price, the Company
shall give written notice thereof to the Holder, setting forth in reasonable
detail and certifying the calculation of such adjustment.

                      (b) The Company shall give written notice to the Holder
at least 30 business days prior to the date on which the Company closes its
books or takes a record for determining rights to receive any dividends or
distributions, or any offer for subscription pro rata to the holders of Common
Stock any additional shares of stock of any class or any other rights.

                      (c) The Company shall also give written notice to the
Holder at least 30 business days prior to the date on which an Organic Change
shall take place.

        4. REGISTRATION RIGHTS.

               4.1 DEFINITIONS. As used in this Section 4, the following terms
shall have the following respective meanings:

               "EXCHANGE ACT" means the Securities Exchange Act of 1934, as
amended.

               "FORM S-3" means such form under the Securities Act as in effect
on the date hereof or any successor registration form under the Securities Act
subsequently adopted by the SEC which permits inclusion or incorporation of
substantial information by reference to other documents filed by the Company
with the SEC.

               "HOLDER" means any person owning of record Registrable
Securities (as defined in Section 4) that have not been sold to the public or
any assignee of record of such Registrable Securities (as defined in Section 4)
in accordance with Section 4.9 hereof.

               "REGISTER," "REGISTERED," and "REGISTRATION" refer to a
registration effected by preparing and filing a registration statement in
compliance with the Securities Act, and the declaration or ordering of
effectiveness of such registration statement or document.

               "REGISTRABLE SECURITIES" means (a) Common Stock of the Company
issued or issuable upon exercise of this Warrant; and (b) any Common Stock of
the


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Company issued as (or issuable upon the conversion or exercise of any warrant,
right or other security which is issued as) a dividend or other distribution
with respect to the Common Stock issuable upon exercise of this Warrant, or in
exchange for or in replacement of, such above-described securities.

               "REGISTRABLE SECURITIES THEN OUTSTANDING" shall be the number of
shares determined by calculating the total number of shares of the Company's
Common Stock that are Registrable Securities and either (a) are then issued and
outstanding or issuable upon exercise of this Warrant, or (b) are issuable
pursuant to then exercisable or convertible securities.

               "REGISTRATION EXPENSES" shall mean all expenses incurred by the
Company in complying with Sections 4.2, 4.3 and 4.4 hereof, including, without
limitation, all registration and filing fees, printing expenses, fees and
disbursements of counsel for the Company, reasonable fees and disbursements of a
single special counsel for the Holders, blue sky fees and expenses and the
expense of any special audits incident to or required by any such registration
(but excluding the compensation of regular employees of the Company which shall
be paid in any event by the Company).

               "SEC" or "COMMISSION" means the Securities and Exchange
Commission.

               "SECURITIES ACT" shall mean the Securities Act of 1933, as
amended.

               "SELLING EXPENSES" shall mean all underwriting discounts and
selling commissions applicable to the sale.

               "SHARES" shall mean the Company's Common Stock issued upon
exercise of this Warrant.

               4.2 DEMAND REGISTRATION.

                      (a) Subject to the conditions of this Section 4.2, if the
Company shall receive a written request from the Holders of a majority of the
Registrable Securities then outstanding (the "Initiating Holders") that the
Company file a registration statement under the Securities Act covering the
registration of at least a majority of the Registrable Securities then
outstanding (or a lesser percent if the anticipated aggregate offering price,
net of underwriting discounts and commissions, would exceed $5,000,000), then
the Company shall, within thirty (30) days of the receipt thereof, give written
notice of such request to all Holders, and subject to the limitations of this
Section 4.2, use its best efforts to effect, as soon as practicable, the
registration under the Securities Act of all Registrable Securities that the
Holders request to be registered.

                      (b) If the Initiating Holders intend to distribute the
Registrable Securities covered by their request by means of an underwriting,
they shall so advise the Company as a part of their request made pursuant to
this Section 4.2 or any request pursuant to Section 4.4 and the Company shall
include such information in the written notice referred to in Section 4.2(a) or
Section 4.4(a), as applicable. In such event, the

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right of any Holder to include its Registrable Securities in such registration
shall be conditioned upon such Holder's participation in such underwriting and
the inclusion of such Holder's Registrable Securities in the underwriting to the
extent provided herein. All Holders proposing to distribute their securities
through such underwriting shall enter into an underwriting agreement in
customary form with the underwriter or underwriters selected for such
underwriting by a majority in interest of the Initiating Holders (which
underwriter or underwriters shall be reasonably acceptable to the Company).
Notwithstanding any other provision of this Section 4.2 or Section 4.4, if the
underwriter advises the Company that marketing factors require a limitation of
the number of securities to be underwritten (including Registrable Securities)
then the Company shall so advise all Holders of Registrable Securities which
would otherwise be underwritten pursuant hereto, and the number of shares that
may be included in the underwriting shall be allocated first to the Company and
then to the Holders of such Registrable Securities on a pro rata basis based on
the total number of Registrable Securities requested to be registered by all
such Holders (including the Initiating Holders); provided, however, that after
the first firm commitment underwritten public offering effected by the Company
following the Effective Date (the "First Public Offering"), the number of shares
of Registrable Securities to be included in such underwriting and registration
shall not be reduced unless all other securities of the Company are first
entirely excluded from the underwriting and registration and in no event shall
the number of Registrable Securities to be included in such underwriting and
registration by the Initiating Holders be reduced to less than thirty percent
(30%) of such Registrable Securities requested to be included in the
registration. Any Registrable Securities excluded or withdrawn from such
underwriting shall be withdrawn from the registration.

                      (c) The Company shall not be required to effect a
registration pursuant to this Section 4.2:

                                (i) during the one year period following the
Effective Date;

                                (ii) after the Company has effected one (1)
registration pursuant to this Section 4.2, and such registration has been
declared or ordered effective; or

                                (iii) if the Initiating Holders propose to
dispose of shares of Registrable Securities that may be immediately registered
on Form S-3 pursuant to a request made pursuant to Section 4.4 below.

               4.3 PIGGYBACK REGISTRATIONS. The Company shall notify all
Holders of Registrable Securities in writing at least thirty (30) days prior to
the filing of any registration statement under the Securities Act for purposes
of a public offering of securities of the Company (including, but not limited
to, registration statements relating to secondary offerings of securities of the
Company, but excluding registration statements relating to employee benefit
plans or with respect to corporate reorganizations or other transactions under
Rule 145 of the Securities Act) and will afford each such Holder an opportunity
to include in such registration statement all or part of such Registrable


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Securities held by such Holder. Each Holder desiring to include in any such
registration statement all or any part of the Registrable Securities held by it
shall, within fifteen (15) days after the above-described notice from the
Company, so notify the Company in writing. Such notice shall state the intended
method of disposition of the Registrable Securities by such Holder. If a Holder
decides not to include all of its Registrable Securities in any registration
statement thereafter filed by the Company, such Holder shall nevertheless
continue to have the right to include any Registrable Securities in any
subsequent registration statement or registration statements as may be filed by
the Company with respect to offerings of its securities, all upon the terms and
conditions set forth herein.

                      (a) UNDERWRITING. If the registration statement under
which the Company gives notice under this Section 4.3 is for an underwritten
offering, the Company shall so advise the Holders of Registrable Securities. In
such event, the right of any such Holder to be included in a registration
pursuant to this Section 4.3 shall be conditioned upon such Holder's
participation in such underwriting and the inclusion of such Holder's
Registrable Securities in the underwriting to the extent provided herein. All
Holders proposing to distribute their Registrable Securities through such
underwriting shall enter into an underwriting agreement in customary form with
the underwriter or underwriters selected for such underwriting by the Company.
Notwithstanding any other provision of the Agreement, if the underwriter
determines in good faith that marketing factors require a limitation of the
number of shares to be underwritten, the number of shares that may be included
in the underwriting shall be allocated first to the Company and then to the
Holders on a pro rata basis based on the total number of Registrable Securities
requested to be registered by such Holders; provided however, that after the
First Public Offering, no such reduction shall reduce the amount of securities
of the selling Holders included in the registration to less than thirty percent
(30%) of the total amount of Registrable Securities requested to be included in
such registration by such Holders. If any Holder disapproves of the terms of any
such underwriting, such Holder may elect to withdraw therefrom by written notice
to the Company and the underwriter, delivered at least ten (10) business days
prior to the effective date of the registration statement. Any Registrable
Securities excluded or withdrawn from such underwriting shall be excluded and
withdrawn from the registration. For any Holder which is a partnership or
corporation, the partners, retired partners and shareholders of such Holder, or
the estates and family members of any such partners and retired partners and any
trusts for the benefit of any of the foregoing person shall be deemed to be a
single "Holder", and any pro rata reduction with respect to such "Holder" shall
be based upon the aggregate amount of shares carrying registration rights owned
by all entities and individuals included in such "Holder," and requested to be
registered by such Holder as defined in this sentence.

                      (b) RIGHT TO TERMINATE REGISTRATION. The Company shall
have the right to terminate or withdraw any registration initiated by it under
this Section 4.3 prior to the effectiveness of such registration whether or not
any Holder has elected to include securities in such registration. The
Registration Expenses of such withdrawn registration shall be borne by the
Company in accordance with Section 4.5 hereof.


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               4.4 FORM S-3 REGISTRATION. In case the Company shall receive from
any Holder or Holders of Registrable Securities a written request or requests
that the Company effect a registration on Form S-3 or any similar short-form
registration statement and any related qualification or compliance with respect
to all or a part of the Registrable Securities owned by such Holder or Holders,
and the anticipated aggregate offering price, net of underwriting discounts and
commissions, would exceed $5,000,000, the Company will:

                      (a) promptly give written notice of the proposed
registration, and any related qualification or compliance, to all other Holders
of Registrable Securities; and

                      (b) as soon as practicable, effect such registration and
all such qualifications and compliances as may be so requested and as would
permit or facilitate the sale and distribution of all or such portion of such
Holder's or Holders' Registrable Securities as are specified in such request,
together with all or such portion of the Registrable Securities of any other
Holder or Holders joining in such request as are specified in a written request
given within fifteen (15) days after receipt of such written notice from the
Company; provided, however, that the Company shall not be obligated to effect
any such registration, qualification or compliance pursuant to this Section 4.4:

                                (i) if Form S-3 (or any successor or similar
form) is not available for such offering by the Holders, or

                                (ii) in any particular jurisdiction in which the
Company would be required to qualify to do business or to execute a general
consent to service of process in effecting such registration, qualification or
compliance.

                      (c) Subject to the foregoing, the Company shall file a
Form S-3 registration statement covering the Registrable Securities and other
securities so requested to be registered as soon as practicable after receipt of
the request or requests of the Holders. Registrations effected pursuant to this
Section 4.4 shall not be counted as demands for registration or registrations
effected pursuant to Sections 4.2 or 4.3, respectively.

               4.5 EXPENSES OF REGISTRATION. Except as specifically provided
herein, all Registration Expenses incurred in connection with any registration,
qualification or compliance pursuant to Section 4.2 or any registration under
Section 4.3 or Section 4.4 herein shall be borne by the Company. All Selling
Expenses incurred in connection with any registrations hereunder, shall be borne
by the holders of the securities so registered pro rata on the basis of the
number of shares so registered. The Company shall not, however, be required to
pay for expenses of any registration proceeding begun pursuant to Section 4.2 or
4.4, the request of which has been subsequently withdrawn by the Initiating
Holders unless (a) the withdrawal is based upon material adverse information
concerning the Company of which the Initiating Holders were not aware at the
time of such request or (b) the Holders of a majority of Registrable Securities
agree to forfeit their right to a requested registration pursuant to Section
4.2, in which event such right



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shall be forfeited by all Holders). If the Holders are required to pay the
Registration Expenses, such expenses shall be borne by the holders of securities
(including Registrable Securities) requesting such registration in proportion to
the number of shares for which registration was requested. If the Company is
required to pay the Registration Expenses of a withdrawn offering pursuant to
clause (a) above, then the Holders shall not forfeit their rights pursuant to
Section 4.2 or Section 4.4 to a demand registration.

               4.6 OBLIGATIONS OF THE COMPANY. Whenever required to effect the
registration of any Registrable Securities, the Company shall, as expeditiously
as reasonably possible:

                      (a) Prepare and file with the SEC a registration statement
with respect to such Registrable Securities and use all reasonable efforts to
cause such registration statement to become effective, and, upon the request of
the Holders of a majority of the Registrable Securities registered thereunder,
keep such registration statement effective for up to one (1) year or, if
earlier, until the Holder or Holders have completed the distribution related
thereto. The Company shall not be required to file, cause to become effective or
maintain the effectiveness of any registration statement that contemplates a
distribution of securities on a delayed or continuous basis pursuant to Rule 415
under the Securities Act.

                      (b) Prepare and file with the SEC such amendments and
supplements to such registration statement and the prospectus used in connection
with such registration statement as may be necessary to comply with the
provisions of the Securities Act with respect to the disposition of all
securities covered by such registration statement for the period set forth in
paragraph (a) above.

                      (c) Furnish to the Holders such number of copies of a
prospectus, including a preliminary prospectus, in conformity with the
requirements of the Securities Act, and such other documents as they may
reasonably request in order to facilitate the disposition of Registrable
Securities owned by them.

                      (d) Use its reasonable best efforts to register and
qualify the securities covered by such registration statement under such other
securities or Blue Sky laws of such jurisdictions as shall be reasonably
requested by the Holders; provided that the Company shall not be required in
connection therewith or as a condition thereto to qualify to do business or to
file a general consent to service of process in any such states or
jurisdictions.

                      (e) In the event of any underwritten public offering,
enter into and perform its obligations under an underwriting agreement, in usual
and customary form, with the managing underwriter(s) of such offering. Each
Holder participating in such underwriting shall also enter into and perform its
obligations under such an agreement.

                      (f) Notify each Holder of Registrable Securities covered
by such registration statement at any time when a prospectus relating thereto is
required to


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be delivered under the Securities Act of the happening of any event as a result
of which the prospectus included in such registration statement, as then in
effect, includes an untrue statement of a material fact or omits to state a
material fact required to be stated therein or necessary to make the statements
therein not misleading in the light of the circumstances then existing.

                      (g) Use its best efforts to furnish, on the date that such
Registrable Securities are delivered to the underwriters for sale, if such
securities are being sold through underwriters, (i) an opinion, dated as of such
date, of the counsel representing the Company for the purposes of such
registration, in form and substance as is customarily given to underwriters in
an underwritten public offering, addressed to the underwriters, if any, and (ii)
a letter dated as of such date, from the independent certified public
accountants of the Company, in form and substance as is customarily given by
independent certified public accountants to underwriters in an underwritten
public offering addressed to the underwriters.

               4.7 DELAY OF REGISTRATION; FURNISHING INFORMATION.

                      (a) No Holder shall have any right to obtain or seek an
injunction restraining or otherwise delaying any such registration as the result
of any controversy that might arise with respect to the interpretation or
implementation of this Section 4.

                      (b) It shall be a condition precedent to the obligations
of the Company to take any action pursuant to Section 4.2, 4.3 or 4.4 that the
selling Holders shall furnish to the Company such information regarding
themselves, the Registrable Securities held by them and the intended method of
disposition of such securities as shall be required to effect the registration
of their Registrable Securities.

               4.8 INDEMNIFICATION. In the event any Registrable Securities are
included in a registration statement under Sections 4.2, 4.3 or 4.4:

                      (a) To the extent permitted by law, the Company will
indemnify and hold harmless each Holder, the partners, officers and directors of
each Holder, any underwriter (as defined in the Securities Act) for such Holder
and each person, if any, who controls such Holder or underwriter within the
meaning of the Securities Act or the Exchange Act, against any losses, claims,
damages, or liabilities (joint or several) to which they may become subject
under the Securities Act, the Exchange Act or other federal or state law,
insofar as such losses, claims, damages or liabilities (or actions in respect
thereof) arise out of or are based upon any of the following statements,
omissions or violations (collectively a "Violation") by the Company: (i) any
untrue statement or alleged untrue statement of a material fact contained in
such registration statement, including any preliminary prospectus or final
prospectus contained therein or any amendments or supplements thereto, (ii) the
omission or alleged omission to state therein a material fact required to be
stated therein, or necessary to make the statements therein not misleading, or
(iii) any violation or alleged violation by the Company of the Securities Act,
the Exchange Act, any state securities


                                       12
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law or any rule or regulation promulgated under the Securities Act, the Exchange
Act or any state securities law in connection with the offering covered by such
registration statement; and the Company will pay as incurred to each such
Holder, partner, officer, director, underwriter or controlling person for any
legal or other expenses reasonably incurred by them in connection with
investigating or defending any such loss, claim, damage, liability or action;
provided however, that the indemnity agreement contained in this Section 4.8(a)
shall not apply to amounts paid in settlement of any such loss, claim, damage,
liability or action if such settlement is effected without the consent of the
Company, which consent shall not be unreasonably withheld, nor shall the Company
be liable in any such case for any such loss, claim, damage, liability or action
to the extent that it arises out of or is based upon a Violation which occurs in
reliance upon and in conformity with written information furnished expressly for
use in connection with such registration by such Holder, partner, officer,
director, underwriter or controlling person of such Holder.

                      (b) To the extent permitted by law, each Holder will, if
Registrable Securities held by such Holder are included in the securities as to
which such registration qualifications or compliance is being effected,
indemnify and hold harmless the Company, each of its directors, its officers and
each person, if any, who controls the Company within the meaning of the
Securities Act, any underwriter and any other Holder selling securities under
such registration statement or any of such other Holder's partners, directors or
officers or any person who controls such Holder, against any losses, claims,
damages or liabilities (joint or several) to which the Company or any such
director, officer, controlling person, underwriter or other such Holder, or
partner, director, officer or controlling person of such other Holder may become
subject under the Securities Act, the Exchange Act or other federal or state
law, insofar as such losses, claims, damages or liabilities (or actions in
respect thereto) arise out of or are based upon any Violation, in each case to
the extent (and only to the extent) that such Violation occurs in reliance upon
and in conformity with written information furnished by such Holder under an
instrument duly executed by such Holder and stated to be specifically for use in
connection with such registration; and each such Holder will pay as incurred any
legal or other expenses reasonably incurred by the Company or any such director,
officer, controlling person, underwriter or other Holder, or partner, officer,
director or controlling person of such other Holder in connection with
investigating or defending any such loss, claim, damage, liability or action if
it is judicially determined that there was such a Violation; provided, however,
that the indemnity agreement contained in this Section 4.8(b) shall not apply to
amounts paid in settlement of any such loss, claim, damage, liability or action
if such settlement is effected without the consent of the Holder, which consent
shall not be unreasonably withheld; provided further, that in no event shall any
indemnity provided by any Holder under this Section 4.8 exceed the net proceeds
from the offering received by such Holder.

                      (c) Promptly after receipt by an indemnified party under
this Section 4.8 of notice of the commencement of any action (including any
governmental action), such indemnified party will, if a claim in respect thereof
is to be made against any indemnifying party under this Section 4.8, deliver to
the indemnifying party a written


                                       13
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notice of the commencement thereof and the indemnifying party shall have the
right to participate in, and, to the extent the indemnifying party so desires,
jointly with any other indemnifying party similarly noticed, to assume the
defense thereof with counsel mutually satisfactory to the parties; provided,
however, that an indemnified party shall have the right to retain its own
counsel, with the fees and expenses to be paid by the indemnifying party, if
representation of such indemnified party by the counsel retained by the
indemnifying party would be inappropriate due to actual or potential differing
interests between such indemnified party and any other party represented by such
counsel in such proceeding. The failure to deliver written notice to the
indemnifying party within a reasonable time of the commencement of any such
action, if materially prejudicial to its ability to defend such action, shall
relieve such indemnifying party of any liability to the indemnified party under
this Section 4.8, but the omission so to deliver written notice to the
indemnifying party will not relieve it of any liability that it may have to any
indemnified party otherwise than under this Section 4.8.

                      (d) If the indemnification provided for in this Section
4.8 is held by a court of competent jurisdiction to be unavailable to an
indemnified party with respect to any losses, claims, damages or liabilities
referred to herein, the indemnifying party, in lieu of indemnifying such
indemnified party thereunder, shall to the extent permitted by applicable law
contribute to the amount paid or payable by such indemnified party as a result
of such loss, claim, damage or liability in such proportion as is appropriate to
reflect the relative fault of the indemnifying party on the one hand and of the
indemnified party on the other in connection with the Violation(s) that resulted
in such loss, claim, damage or liability, as well as any other relevant
equitable considerations. The relative fault of the indemnifying party and of
the indemnified party shall be determined by a court of law by reference to,
among other things, whether the untrue or alleged untrue statement of a material
fact or the omission to state a material fact relates to information supplied by
the indemnifying party or by the indemnified party and the parties' relative
intent, knowledge, access to information and opportunity to correct or prevent
such statement or omission; provided, that in no event shall any contribution by
a Holder hereunder exceed the proceeds from the offering received by such
Holder.

                      (e) The obligations of the Company and Holders under this
Section 4.8 shall survive completion of any offering of Registrable Securities
in a registration statement and the termination of this Warrant. No indemnifying
party, in the defense of any such claim or litigation, shall, except with the
consent of each indemnified party, consent to entry of any judgment or enter
into any settlement which does not include as an unconditional term thereof the
giving by the claimant or plaintiff to such indemnified party of a release from
all liability in respect to such claim or litigation.

               4.9 ASSIGNMENT OF REGISTRATION RIGHTS. The rights to cause the
Company to register Registrable Securities pursuant to this Section 4 may be
assigned by a Holder to a transferee or assignee of Registrable Securities which
(a) is a subsidiary, parent, general partner, limited partner, retired partner,
member or retired member of a Holder, or (b) acquires at least one million
(1,000,000) shares of Registrable Securities (as adjusted for stock splits and
combinations); provided, however, (i) the transferor shall


                                       14
   15



furnish to the Company written notice of the name and address of such transferee
or assignee and the securities with respect to which such registration rights
are being assigned and (ii) such transferee shall agree to be subject to all
restrictions set forth in this Agreement.

               4.10 LIMITATION ON SUBSEQUENT REGISTRATION RIGHTS. After the date
of this Agreement, the Company shall not, without the prior written consent of
the Holders of a majority of the Registrable Securities then outstanding, enter
into any agreement with any holder or prospective holder of any securities of
the Company that would grant such holder registration rights that would prevent
the Company from honoring the registration rights of Holders described herein.

               4.11 AGREEMENT TO FURNISH INFORMATION. Each Holder agrees to
execute and deliver such other agreements as may be reasonably requested by the
Company or the underwriter which are consistent with the foregoing or which are
necessary to give further effect thereto. In addition, if requested by the
Company or the representative of the underwriters of Common Stock (or other
securities) of the Company, each Holder shall provide, within ten (10) days of
such request, such information as may be required by the Company or such
representative in connection with the completion of any public offering of the
Company's securities pursuant to a registration statement filed under the
Securities Act. The obligations described in this Section 4.11 shall not apply
to a registration relating solely to employee benefit plans on Form S-1 or Form
S-8 or similar forms that may be promulgated in the future, or a registration
relating solely to a Commission Rule 145 transaction on Form S-4 or similar
forms that may be promulgated in the future.

               4.12 RULE 144 REPORTING. With a view to making available to the
Holders the benefits of certain rules and regulations of the SEC which may
permit the sale of the Registrable Securities to the public without
registration, the Company agrees to use its best efforts to:

                      (a) Make and keep public information available, as those
terms are understood and defined in SEC Rule 144 or any similar or analogous
rule promulgated under the Securities Act, at all times after the registration
by the Company of its Common Stock or any other securities under the Exchange
Act or the effective date of the first registration filed by the Company for an
offering of its securities to the general public;

                      (b) File with the SEC, in a timely manner, all reports and
other documents required of the Company under the Exchange Act; and

                      (c) So long as a Holder owns any Registrable Securities,
furnish to such Holder forthwith upon request: a written statement by the
Company as to its compliance with the reporting requirements of said Rule 144 of
the Securities Act, and of the Exchange Act (at any time after it has become
subject to such reporting requirements); a copy of the most recent annual or
quarterly report of the Company; and such other reports and documents as a
Holder may reasonably request in availing itself of


                                       15
   16


any rule or regulation of the SEC allowing it to sell any such securities
without registration.

               4.13 MARKET STANDOFF. Each Holder hereby agrees that it shall not
sell or otherwise transfer or dispose of any Common Stock (or other securities)
of the Company held by such Holder (excluding shares to be distributed by
QUALCOMM in accordance with the Separation and Distribution Agreement between
QUALCOMM and the Company dated on or about the date hereof) for a period of
ninety (90) days following the effective date of a registration statement of the
Company filed under the Securities Act of 1933, as amended, provided that the
officers and directors of the Company enter into similar agreements.

        5. MISCELLANEOUS

               5.1 ISSUE TAX. The issuance of certificates for shares of Common
Stock upon the exercise of the Warrant shall be made without charge to the
Holder of the Warrant for any issue tax (other than any applicable income taxes)
in respect thereof; provided, however, that the Company shall not be required to
pay any tax which may be payable in respect of any transfer involved in the
issuance and delivery of any certificate in a name other than that of the then
Holder of the Warrant being exercised.

               5.2 CLOSING OF BOOKS. The Company will at no time close its
transfer books against the transfer of any warrant or of any shares of Common
Stock issued or issuable upon the exercise of any warrant in any manner which
interferes with the timely exercise of this Warrant.

               5.3 AUTOMATIC EXERCISE. To the extent this Warrant is not
previously exercised, and if the fair market value of one share of the Company's
Common Stock is greater than the Stock Purchase Price then in effect, this
Warrant shall be deemed automatically exercised pursuant to Section 1 (even if
not surrendered) immediately before its expiration. To the extent this Warrant
or any portion thereof is deemed automatically exercised pursuant to this
Section 5.3, the Company agrees to promptly notify the holder hereof of the
number shares of Common Stock, if any, the holder hereof is entitled to receive
by reason of such automatic exercise, and the Holder shall have 30 days from the
receipt of such notice to determine whether such automatic exercise shall be
made pursuant to Section 1.1 or 1.2 hereof.

               5.4 NO VOTING OR DIVIDEND RIGHTS; LIMITATION OF LIABILITY.
Nothing contained in this Warrant shall be construed as conferring upon the
Holder hereof the right to vote or to consent or to receive notice as a
shareholder of the Company or any other matters or any rights whatsoever as a
shareholder of the Company. Except as may be set forth herein, no cash dividends
or interest shall be payable or accrued in respect of this Warrant or the
interest represented hereby or the shares purchasable hereunder until, and only
to the extent that, this Warrant shall have been exercised. No provisions
hereof, in the absence of affirmative action by the holder to purchase shares of
Common Stock, and no mere enumeration herein of the rights or privileges of the
holder hereof, shall give


                                       16
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rise to any liability of such Holder for the Stock Purchase Price or as a
shareholder of the Company, whether such liability is asserted by the Company or
by its creditors.

               5.5 WARRANTS TRANSFERABLE. Subject to compliance with applicable
federal and state securities laws, this Warrant and all rights hereunder are
transferable, in whole or in part, without charge to the holder hereof (except
for transfer taxes), upon surrender of this Warrant properly endorsed. Each
taker and holder of this Warrant, by taking or holding the same, consents and
agrees that this Warrant, when endorsed in blank, shall be deemed negotiable,
and that the holder hereof, when this Warrant shall have been so endorsed, may
be treated by the Company, at the Company's option, and all other persons
dealing with this Warrant as the absolute owner hereof for any purpose and as
the person entitled to exercise the rights represented by this Warrant, or to
the transfer hereof on the books of the Company any notice to the contrary
notwithstanding; but until such transfer on such books, the Company may treat
the registered owner hereof as the owner for all purposes.

               5.6 RIGHTS AND OBLIGATIONS SURVIVE EXERCISE OF WARRANT. The
rights and obligations of the Company, of the holder of this Warrant and of the
holder of shares of Common Stock issued upon exercise of this Warrant, shall
survive the exercise of this Warrant.

               5.7 MODIFICATION AND WAIVER. This Warrant and any provision
hereof may be changed, waived, discharged or terminated only by an instrument in
writing signed by the party against which enforcement of the same is sought.

               5.8 NOTICES. Any notice, request or other document required or
permitted to be given or delivered to the Holder hereof or the Company shall be
delivered or shall be sent by certified mail, postage prepaid, to such Holder at
its address as shown on the books of the Company, attention: Chief Executive
Officer, or to the Company at the address indicated therefor in the first
paragraph of this Warrant, or such other address as either may from time to time
provide to the other.

               5.9 BINDING EFFECT ON SUCCESSORS. This Warrant shall be binding
upon any corporation succeeding the Company by merger, consolidation or
acquisition of all or substantially all of the Company's assets. All of the
obligations of the Company relating to the Common Stock issuable upon the
exercise of this Warrant shall survive the exercise and termination of this
Warrant. All of the covenants and agreements of the Company shall inure to the
benefit of the successors and assigns of the holder hereof.

               5.10 DESCRIPTIVE HEADINGS AND GOVERNING LAW. The description
headings of the several sections and paragraphs of this Warrant are inserted for
convenience only and do not constitute a part of this Warrant. This Warrant
shall be construed and enforced in accordance with, and the rights of the
parties shall be governed by, the laws of the State of California.

               5.11 LOST WARRANTS. The Company represents and warrants to the
Holder hereof that upon receipt of evidence reasonably satisfactory to the
Company of the


                                       17
   18



loss, theft, destruction, or mutilation of this Warrant and, in the case of any
such loss, theft or destruction, upon receipt of an indemnity reasonably
satisfactory to the Company, or in the case of any such mutilation upon
surrender and cancellation of such Warrant, the Company, at its expense, will
make and deliver a new Warrant, of like tenor, in lieu of the lost, stolen,
destroyed or mutilated Warrant.

               5.12 FRACTIONAL SHARES. No fractional shares shall be issued upon
exercise of this Warrant. The Company shall, in lieu of issuing any fractional
share, pay the holder entitled to such fraction a sum in cash equal to such
fraction multiplied by the then effective Stock Purchase Price.

               5.13 NO IMPAIRMENT OF RIGHTS. The Company will not, by amendment
of its Charter or through any other means, avoid or seek to avoid the observance
or performance of any of the terms of this Warrant, but will at all times in
good faith assist in the carrying out of all such terms and in the taking of all
such action as may be necessary or appropriate in order to protect the rights of
the holder of this Warrant against impairment.


               5.14 FCC ISSUES. Notwithstanding any other provision of this
Warrant, Holder hereby agrees that it will not exercise the Warrant or any
portion thereof in a manner that would (i) preclude the Company from qualifying
as a "Publicly Traded Corporation With Widely Disbursed Voting Power" (a
"PTCWWDVP") under 47 CFR 24.720(m) as a result of the Company not satisfying the
provisions of 47 CFR 24.720(m)(2) (which restriction on exercise shall only be
applicable so long as the Company is seeking to acquire, acquires and/or holds,
directly or indirectly, C-Block and F-Block broadband PCS licenses on the basis
of qualifying as a PTCWWDVP), or (ii) cause any change in the Company's status
as a "very small business" designated entity as defined by the rules and
regulations of the Federal Communications Commission (the "FCC") (to the extent
the Company thereupon would not be qualified to hold or acquire, directly or
indirectly, C-Block and F-Block broadband PCS licenses as to which it is or
would be, directly or indirectly, the licensee), and any such exercise shall be
invalid ab initio to the extent such exercise would preclude such qualification
or cause any such change; provided, however, that in the event the rules and
regulations of the FCC should later be changed (or a waiver of any such rules
and regulations is obtained) to permit exercise of any rights otherwise
restricted as described above, Holder shall then be entitled to exercise such
additional rights. Holder acknowledges and agrees that in determining whether
any exercise of the Warrant or any portion thereof would preclude the
qualification referred to in clause (i) or cause any change referred to in
clause (ii) of this Section 5.14, Holder will expressly include in its ownership
calculations all shares of Company capital stock held by or which after the date
of this Warrant are acquired by (whether by gift, purchase, pursuant to stock
options, warrants or convertible securities, or otherwise acquired by or
received by in any manner), any officers or inside directors of the Holder.


                      This superceding warrant replaces and supercedes a
substantially similar warrant dated March 9, 1999 to purchase 4,500,000 shares
of the Company's


                                       18
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common stock which in turn replaced and superceded a substantially similar
warrant dated September 23, 1999 to purchase 5,500,000 shares of the Company's
common stock.

        IN WITNESS WHEREOF, the Company has caused this Warrant to be duly
executed by its officers, thereunto duly authorized this 1st day of April, 1999.

                                    LEAP WIRELESS INTERNATIONAL, INC.
                                         a Delaware corporation



                                    By:  /s/ Thomas J. Bernard
                                         ---------------------------------------
                                         Thomas J. Bernard
                                         Executive Vice President

ATTEST:

By:     /s/ James E. Hoffmann
        --------------------------------------
        James E. Hoffmann
        Senior Vice President, General Counsel
        and Secretary



                                       19
   20



                                    EXHIBIT A

                                SUBSCRIPTION FORM

                                                  Date: _________________, 19___

Leap Wireless International, Inc.
10307 Pacific Center Court
San Diego, California 92121
Attn:  President

Ladies and Gentlemen:

[ ]     The undersigned hereby elects to exercise the warrant issued to it by
        Leap Wireless International, Inc. (the "Company") and dated ___________
        _____ (the "Warrant") and to purchase thereunder
        __________________________________ shares of Common Stock of the Company
        (the "Shares") at the Stock Purchase Price.

The undersigned hereby elects to pay the Purchase Price in the following manner:

        [ ]    cash

        [ ]    cancellation of indebtedness of the Company

        [ ]    delivery to the Company of other common stock of the Company
               having a fair market value as of the date of exercise equal to
               the Stock Purchase Price times the number of shares to be
               acquired upon exercise

        [ ]    other form of  consideration  approved by the Board of  Directors
               of the Company

[ ]     The undersigned hereby elects to convert _______________________ percent
        (____%) of the value of the Warrant pursuant to the provisions of
        Section 1.2 of the Warrant.

        Pursuant to the terms of the Warrant the undersigned has delivered the
Purchase Price herewith in full in cash or by certified check or wire transfer.

                                        Very truly yours,


                                        ----------------------------------------

                                        By:
                                           -------------------------------------

                                        Title:
                                              ----------------------------------