UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

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SCHEDULE 13D/A

Under the Securities Exchange Act of 1934

(Amendment No. 12)

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T-Mobile US, Inc.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

872590104

(CUSIP Number)

Dr. Axel Lützner

Vice President DT Legal

Deutsche Telekom AG

Friedrich-Ebert-Allee 140

53113 Bonn, Germany

+49-228-181-0

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

October 6, 2020

(Date of Event which Requires Filing of this Statement)

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If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.          ◻

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section of the Exchange Act but shall be subject to all other provisions of the Exchange Act (however, see the Notes).

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CUSIP No. 872590104

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CUSIP No. 872590104

1	NAMES OF REPORTING PERSONS
	T-Mobile Global Zwischenholding GmbH IRS identification number not applicable.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☒
3	SEC USE ONLY
4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Federal Republic of Germany
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER*
			649,882,564
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER**
			538,590,941
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON***
	649,882,564
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)****
	52.5%
14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	CO

*	Consists of the sum of (i) 538,590,941 shares of Common Stock held by DT Holding, (ii) 106,291,623 shares of Common Stock held by Project 6 and subject to the Proxy, as of October 6, 2020, and (iii) 5,000,000 shares of Common Stock held by Claure Mobile and subject to the Claure Proxy, as of October 6, 2020. The Reporting Persons may be deemed to be members of a “group” within the meaning of Section 13(d)(3) of the Exchange Act, comprised of the Reporting Persons, the Separately Filing Group Members and the Claure Parties.
**	Consists of 538,590,941 shares of Common Stock held by DT Holding.
***	Consists of the sum of (i) 538,590,941 shares of Common Stock held by DT Holding, (ii) 106,291,623 shares of Common Stock held by Project 6 and subject to the Proxy (of which 101,491,623 of such shares of Common Stock are subject to call options granted by Project 6 to Deutsche Telekom), as of October 6, 2020, and (iii) 5,000,000 shares of Common Stock held by Claure Mobile and subject to the Claure Proxy, as of October 6, 2020. The Reporting Persons may be deemed to be members of a “group” within the meaning of Section 13(d)(3) of the Exchange Act, comprised of the Reporting Persons, the Separately Filing Group Members and the Claure Parties.
****	Based on the number of shares of Common Stock outstanding as of August 3, 2020, as reported by the Issuer in its Amendment No. 1 to its Quarterly Report on Form 10-Q, filed with the Commission on August 10, 2020.

1	NAMES OF REPORTING PERSONS
	Deutsche Telekom AG IRS identification number not applicable.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP			(a)	☐
				(b)	☒
3	SEC USE ONLY
4	SOURCE OF FUNDS (SEE INSTRUCTIONS)
	OO
5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(D) OR 2(E)				☐
6	CITIZENSHIP OR PLACE OF ORGANIZATION
	Federal Republic of Germany
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		7	SOLE VOTING POWER*
			649,882,564
		8	SHARED VOTING POWER
			0
		9	SOLE DISPOSITIVE POWER**
			538,590,941
		10	SHARED DISPOSITIVE POWER
			0
11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON***
	649,882,564
12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)				☐
13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)****
	52.5%
14	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
	CO

*	Consists of the sum of (i) 538,590,941 shares of Common Stock held by DT Holding, (ii) 106,291,623 shares of Common Stock held by Project 6 and subject to the Proxy, as of October 6, 2020, and (iii) 5,000,000 shares of Common Stock held by Claure Mobile and subject to the Claure Proxy, as of October 6, 2020. The Reporting Persons may be deemed to be members of a “group” within the meaning of Section 13(d)(3) of the Exchange Act, comprised of the Reporting Persons, the Separately Filing Group Members and the Claure Parties.
**	Consists of 538,590,941 shares of Common Stock held by DT Holding.
***	Consists of the sum of (i) 538,590,941 shares of Common Stock held by DT Holding, (ii) 106,291,623 shares of Common Stock held by Project 6 and subject to the Proxy (of which 101,491,623 of such shares of Common Stock are subject to call options granted by Project 6 to Deutsche Telekom), as of October 6, 2020, and (iii) 5,000,000 shares of Common Stock held by Claure Mobile and subject to the Claure Proxy, as of October 6, 2020. The Reporting Persons may be deemed to be members of a “group” within the meaning of Section 13(d)(3) of the Exchange Act, comprised of the Reporting Persons, the Separately Filing Group Members and the Claure Parties.
****	Based on the number of shares of Common Stock outstanding as of August 3, 2020, as reported by the Issuer in its Amendment No. 1 to its Quarterly Report on Form 10-Q, filed with the Commission on August 10, 2020.

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This Amendment No. 12 (this “Amendment No. 12”) to the Schedule 13D filed with the U.S. Securities and Exchange Commission (the “Commission”) on May 10, 2013, as amended and supplemented by Amendment No. 1 to Schedule 13D filed with the Commission on November 26, 2013, Amendment No. 2 to Schedule 13D filed with the Commission on January 15, 2014, Amendment No. 3 to Schedule 13D filed with the Commission on March 6, 2018, Amendment No. 4 to Schedule 13D filed with the Commission on April 30, 2018, Amendment No. 5 to Schedule 13D filed with the Commission on July 26, 2019, Amendment No. 6 to Schedule 13D filed with the Commission on February 20, 2020, Amendment No. 7 to Schedule 13D filed with the Commission on April 2, 2020, Amendment No. 8 to Schedule 13D filed with the Commission on June 15, 2020, Amendment No. 9 to Schedule 13D filed with the Commission on June 24, 2020, Amendment No. 10 to Schedule 13D filed with the Commission on June 26, 2020, and Amendment No. 11 to Schedule 13D filed with the Commission on July 29, 2020 (as amended and supplemented, collectively, this “Schedule 13D”), is being filed by Deutsche Telekom AG, a stock corporation (Aktiengesellschaft) organized under the laws of the Federal Republic of Germany (“Deutsche Telekom”), T-Mobile Global Zwischenholding GmbH, a limited liability company (Gesellschaft mit beschränkter Haftung) organized under the laws of the Federal Republic of Germany and a direct wholly owned subsidiary of Deutsche Telekom (“T-Mobile Global”), T-Mobile Global Holding GmbH, a limited liability company (Gesellschaft mit beschränkter Haftung) organized under the laws of the Federal Republic of Germany and a direct wholly owned subsidiary of T-Mobile Global (“T-Mobile Holding”), and Deutsche Telekom Holding B.V., a limited liability company (besloten vennootschap met beperkte aansprakelijkheid) organized under the laws of the Netherlands and a direct wholly owned subsidiary of T-Mobile Holding (“DT Holding” and, together with Deutsche Telekom, T-Mobile Global and T-Mobile Holding, the “Reporting Persons”, and each, a “Reporting Person”), pursuant to Section 13(d) of the Exchange Act, and Rule 13d-2(a) thereunder, with respect to the shares of common stock, par value $0.00001 per share (the “Common Stock”), of T-Mobile US, Inc., a Delaware corporation (the “Issuer” or “T-Mobile”).

The Reporting Persons are party to certain agreements with the Separately Filing Group Members and the Claure Parties, which agreements contain, among other things, certain voting agreements and transfer and other restrictions. As a result, the Reporting Persons may be deemed to be members of a “group” within the meaning of Section 13(d)(3) of the Exchange Act, comprised of the Reporting Persons, the Separately Filing Group Members and the Claure Parties.

Except as set forth below, all Items of this Schedule 13D, as amended prior to the date hereof, are materially unchanged. Capitalized terms used in this Amendment No. 12 and not otherwise defined shall have the respective meanings assigned to such terms in this Schedule 13D.

Item 3.          Source and Amount of Funds or Other Consideration

This Item 3 is hereby amended and supplemented as follows:

The information set forth in Item 6 of this Schedule 13D is hereby incorporated by reference.

Item 4.          Purpose of the Transaction

This Item 4 is hereby amended and supplemented as follows:

The information set forth in Item 6 of this Schedule 13D is hereby incorporated by reference.

This Item 5 is hereby amended and supplemented as follows:

(a)-(b) The information contained in the cover pages of this Schedule 13D and the information set forth in Item 6 of this Schedule 13D is incorporated herein by reference.

As of the date hereof, the Reporting Persons in the aggregate may be deemed to beneficially own 649,882,564 shares of Common Stock, which represent approximately 52.5% of the shares of Common Stock outstanding as of August 3, 2020, as reported by the Issuer in its Amendment No. 1 to its Quarterly Report on Form 10-Q, filed with the Commission on August 10, 2020. This includes (i) 538,590,941 shares of Common Stock held by DT Holding, (ii) based solely on the information contained in the Schedule 13D filed by the Separately Filing Group Members, as set forth in Schedule B, an additional 106,291,623 shares of Common Stock beneficially owned by the Separately Filing Group Members (of which 101,491,623 of such shares of Common Stock are subject to call options granted by Project 6 to Deutsche Telekom), and (iii) based solely on the information contained in the Schedule 13D filed by the Claure Parties, as set forth in Schedule B, an additional 5,000,000 shares of Common Stock beneficially owned by the Claure Parties.

(c) The information set forth in Item 6 of this Schedule 13D is hereby incorporated by reference.

This Item 6 is hereby amended and supplemented as follows:

Replacement SB-Newco Call Option

On October 6, 2020, T-Mobile Agent assigned and transferred to Deutsche Telekom, and Deutsche Telekom accepted, T-Mobile Agent’s rights and obligations under each of the SB-Newco Call Option and the Intercreditor Agreement. In accordance with Section 8 of the SB-Newco Call Option, Project 6 issued and delivered to Deutsche Telekom a replacement SB-Newco Call Option, between Project 6, as grantor, and Deutsche Telekom, as optionholder (the “Replacement SB-Newco Call Option”), representing the right of Deutsche Telekom to purchase 44,905,479 shares of Common Stock from Project 6 at a price per share of Common Stock of $101.455. Upon the issuance and delivery of the Replacement SB-Newco Call Option, the Newco-DT Call Option was deemed surrendered, exchanged and replaced in full.

The foregoing summary of the Replacement SB-Newco Call Option does not purport to be complete and is subject to, and qualified in its entirety by, the Replacement SB-Newco Call Option, which is filed as Exhibit 57 hereto.

Signature

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Dated: October 6, 2020

Deutsche Telekom AG
By:	/s/ Dr. Axel Lützner
	Name:	Dr. Axel Lützner
	Title:	Vice President DT Legal

By:	/s/ Dr. Ulrich Zwach
	Name:	Dr. Ulrich Zwach
	Title:	Vice President DT Legal

T-Mobile Global Zwischenholding GmbH
By:	/s/ Dr. Christian Dorenkamp
	Name:	Dr. Christian Dorenkamp
	Title:	Managing Director

By:	/s/ Roman Zitz
	Name:	Roman Zitz
	Title:	Managing Director

T-Mobile Global Holding GmbH
By:	/s/ Dr. Frank Schmidt
	Name:	Dr. Frank Schmidt
	Title:	Managing Director

By:	/s/ Dr. Uli Kühbacher
	Name:	Dr. Uli Kühbacher
	Title:	Managing Director

Deutsche Telekom Holding B.V.
By:	/s/ Frans Roose
	Name:	Frans Roose
	Title:	Managing Director

By:	/s/ Ton Zijlstra
	Name:	Ton Zijlstra
	Title:	Managing Director

SCHEDULE B