POWER OF ATTORNEY
Know all by these present, that the undersigned hereby constitutes and
appoints each of David A. Miller, Broady Hodder and Frederick Williams, signing
singly, the undersigned's true and lawful attorney-in-fact to:
(1) execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of T-Mobile US, Inc.
(including any successor, the "Company"), Forms 3, 4 and 5
(including amendments thereto) in accordance with Section 16(a) of
the Securities Exchange Act of 1934 and the rules and regulations
thereunder and a Form ID, Uniform Application for Access Codes to
File on Edgar and/or related applications for the generation of
access codes for the CIK assigned to the undersigned;
(2) do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete and
execute any such Forms 3, 4 or 5 or Form ID and/or related
applications for the generation of access codes for the ClK
assigned to the undersigned, and timely file such forms (including
amendments thereto) and application with the United States
Securities and Exchange Commission and any stock exchange or
similar authority; and
(3) take any other action of any type whatsoever in connection with the
foregoing which, in the opinion of such attorney-in-fact, may be
of benefit to, in the best interest of, or legally required
by, the undersigned, it being understood that the documents
executed by such attorney-in-fact on behalf of the undersigned
pursuant to this Power of Attorney shall be in such form and shall
contain such tenns and conditions as such attorney-in-fact may
approve in such attorney-in-fact's discretion.
The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be done by virtue of this power of attorney and
the rights and powers herein granted. The undersigned acknowledges that the
foregoing attorneys-in-fact, in serving in such capacity at the request of the
undersigned, are not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934.
The undersigned agrees that each such attorney-in-fact herein may rely
entirely on information furnished orally or in writing by the undersigned to
such attorney-in-fact. The undersigned also agrees to indemnify and hold
harmless the Company and each such attorney-in-fact against any losses, claims,
damages or liabilities (or actions in these respects) that arise out of or are
based upon any untrue statements or omission of necessary facts in the
information provided by the undersigned to such attorney-in-fact for purposes
of executing, acknowledging, delivering or filing Forms 3, 4 or 5 (including
amendments thereto) or Form ID and/or related application for the generation
of access codes and agrees to reimburse the Company and such attorney-in-fact
for any legal or other expenses reasonably incurred in connection with
investigating or defending against any such loss, claim, damage, liability or
action.
This Power of Attorney supersedes any power of attorney previously executed
by the undersigned regarding the purposes outlined in the first paragraph
hereof ("Prior Powers of Attorney"), and the authority of the attorneys-in-
fact named in any Prior Powers of Attorney is hereby revoked.
This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4 or 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier (a) revoked by the undersigned in a signed writing delivered to
the foregoing attorneys-in-fact or (b) superseded by a new power of attorney
regarding the purposes outlined in the first paragraph hereof dated as of a
later date.
IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 15th day of June, 2018.
/s/ J. Braxton Carter II
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Signature
Print Name J. Braxton Carter II
T-Mobile US (TMUS)
Filed: 24 Sep 18, 7:00pm