FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Keys Thomas Christopher 		2. Issuer Name and Ticker or Trading Symbol

T-Mobile US, Inc. [ TMUS ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Pres., T-Mobile Ind. Channels
(Last)          (First)          (Middle)

C/O T-MOBILE US, INC., 12920 SE 38TH STREET 		3. Date of Earliest Transaction (MM/DD/YYYY)

3/23/2017
(Street)

BELLEVUE, WA 98006
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock   3/23/2017     M (1)    18600   A $55.43   372718   D    
Common Stock   3/23/2017     S (1)    18600   D $63.5181   (2) 354118   D    
Common Stock   3/24/2017     M (1)    81400   A $55.43   435518   D    
Common Stock   3/24/2017     S (1)    81400   D $64.3223   (4) 354118   D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (Right to Buy)   $55.43   3/23/2017     M   (1)       18600      (3) 8/8/2017   Common Stock   18600   $0.00   81400   D    
Stock Option (Right to Buy)   $55.43   3/24/2017     M   (1)       81400      (3) 8/8/2017   Common Stock   81400   $0.00   0   D    

Explanation of Responses:
( 1)  The transactions reported here were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 13, 2015.
( 2)  The price shown is a weighted average sales price. The shares were sold at prices ranging from $63.50 to $63.595 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.
( 3)  The option was granted on August 8, 2007. To the extent not already vested as of April 30, 2013, the vesting of this option was accelerated in connection with the closing of the transactions contemplated by the Business Combination Agreement, dated as of October 3, 2012 and amended as of April 14, 2013, among Deutsche Telekom AG, T-Mobile Global Zwischenholding GmbH, T-Mobile Global Holding GmbH, T-Mobile USA Inc. and MetroPCS Communications, Inc. pursuant to the terms of an equity plan of MetroPCS Communications, Inc.
( 4)  The price shown is a weighted average sales price. The shares were sold at prices ranging from $64.15 to $64.74 per share. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Keys Thomas Christopher
C/O T-MOBILE US, INC.
12920 SE 38TH STREET
BELLEVUE, WA 98006

Pres., T-Mobile Ind. Channels

Signatures
/s/ Sarah E. Mock, Attorney-in-Fact 3/24/2017
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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