SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 36)*

T-Mobile US, Inc. (Name of Issuer)

Common Stock (Title of Class of Securities)

(CUSIP Number)

Dr. Axel Lutzner, VP DT Legal Deutsche Telekom AG, Friedrich-Ebert-Allee 140 Bonn, 2M, 53113 49-228-181-0 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

10/28/2026 (Date of Event Which Requires Filing of This Statement)

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 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

SCHEDULE 13D

CUSIP No.

1	Name of reporting person Deutsche Telekom AG
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization GERMANY
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 592,065,875.00 8 Shared Voting Power 0.00 9 Sole Dispositive Power 582,065,875.00 10 Shared Dispositive Power 0.00
11	Aggregate amount beneficially owned by each reporting person 592,065,875.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 55.9 %
14	Type of Reporting Person (See Instructions) CO

SCHEDULE 13D

CUSIP No.

1	Name of reporting person Deutsche Telekom Holding B.V.
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization NETHERLANDS
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 592,065,875.00 8 Shared Voting Power 0.00 9 Sole Dispositive Power 582,065,875.00 10 Shared Dispositive Power 0.00
11	Aggregate amount beneficially owned by each reporting person 592,065,875.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 55.9 %
14	Type of Reporting Person (See Instructions) CO

SCHEDULE 13D

CUSIP No.

1	Name of reporting person T-Mobile Global Holding GmbH
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization GERMANY
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 592,065,875.00 8 Shared Voting Power 0.00 9 Sole Dispositive Power 582,065,875.00 10 Shared Dispositive Power 0.00
11	Aggregate amount beneficially owned by each reporting person 592,065,875.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 55.9 %
14	Type of Reporting Person (See Instructions) CO

SCHEDULE 13D

CUSIP No.

1	Name of reporting person T-Mobile Global Zwischenholding GmbH
2	Check the appropriate box if a member of a Group (See Instructions)   (a)   (b)
3	SEC use only
4	Source of funds (See Instructions) OO
5	Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
6	Citizenship or place of organization GERMANY
Number of Shares Beneficially Owned by Each Reporting Person With:	7 Sole Voting Power 592,065,875.00 8 Shared Voting Power 0.00 9 Sole Dispositive Power 582,065,875.00 10 Shared Dispositive Power 0.00
11	Aggregate amount beneficially owned by each reporting person 592,065,875.00
12	Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
13	Percent of class represented by amount in Row (11) 55.9 %
14	Type of Reporting Person (See Instructions) CO

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock
(b)	Name of Issuer: T-Mobile US, Inc.
(c)	Address of Issuer's Principal Executive Offices: 12920 SE 38th Street, Bellevue, WASHINGTON , 98006.
Item 1 Comment: This Amendment No. 36 (this "Amendment No. 36") to the Schedule 13D filed with the U.S. Securities and Exchange Commission (the "Commission") on May 10, 2013 (as amended and supplemented from time to time, 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 beschrankter 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 beschrankter 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"). This Amendment No. 36 is being filed to update this Schedule 13D to reflect the decrease in the total amount of Common Stock outstanding as a result of a series of Common Stock repurchases by the Issuer, which has increased the percent of Common Stock owned by the Reporting Persons. 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. 36 and not otherwise defined shall have the respective meanings assigned to such terms in this Schedule 13D. Deutsche Telekom disclaims beneficial ownership in any Common Stock held by Delaware Project 6 L.L.C., Delaware Project 9 L.L.C. and Signal Bright LLC ("Signal Bright"), each a wholly-owned subsidiary of SoftBank Group Corp. ("SoftBank"), if such Common Stock is not subject to the Proxy.
Item 2.	Identity and Background
(a)	This Item 2 is hereby amended and supplemented as follows: The information set forth in Schedules A-1, A-3 and A-4 of this Schedule 13D (filed herewith as Exhibits 70, 71 and 72, respectively) is hereby incorporated by reference.
(b)	Same as (a) above.
(c)	Same as (a) above.
(d)	Same as (a) above.
(e)	Same as (a) above.
(f)	Same as (a) above.
Item 5.	Interest in Securities of the Issuer
(a)	This Item 5 is hereby amended and supplemented as follows: The information contained in the cover pages of this Schedule 13D is incorporated herein by reference. As of the date hereof, the Reporting Persons beneficially own, in aggregate, 592,065,875 shares of Common Stock consisting of (i) 582,065,875 shares of Common Stock held by DT Holding and (ii) 10,000,000 shares of Common Stock held by Signal Bright and subject to the Proxy (of which 10,000,000 of such shares of Common Stock are subject to call options granted by Signal Bright to Deutsche Telekom), representing 55.9% of the shares of the Common Stock outstanding as of October 23, 2026, as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the Commission on October 28, 2026. The number of shares of Common Stock held by Signal Bright is based solely on the information provided by SoftBank. In addition, Dr. Frank Appel, Chairman of Deutsche Telekom's supervisory board, and Dr. Thomas Dohmke and Natalie Knight, members of Deutsche Telekom's supervisory board, beneficially own 190 shares, 25 shares and 1,600 shares of Common Stock, respectively, which in each case represents less than 0.01% of the shares of Common Stock issued and outstanding as of October 23, 2026, as reported by the Issuer in its Quarterly Report on Form 10-Q filed with the Commission on October 28, 2026. To the best knowledge of the Reporting Persons, each of Dr. Frank Appel, Dr. Thomas Dohmke and Natalie Knight has the sole power to vote or direct the vote or dispose or direct the disposition of all of the shares of Common Stock beneficially owned by such person.
(b)	Same as (a) above.
(c)	Except as previously reported on this Schedule 13D, to the best knowledge of the Reporting Persons, none of the Reporting Persons has effected any transaction in Common Stock in the 60 days preceding the date hereof.
Item 7.	Material to be Filed as Exhibits.
	Exhibit 70 - Schedule A-1: Directors and Executive Officers of T-Mobile Global Holding GmbH Exhibit 71 - Schedule A-3: Directors and Executive Officers of Deutsche Telekom AG Exhibit 72 - Schedule A-4: Directors and Executive Officers of Deutsche Telekom Holding B.V.

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.

Deutsche Telekom AG

Signature: /s/ Christoph Appel Name/Title: Christoph Appel / Attorney-in-fact Date: 10/29/2026

Deutsche Telekom Holding B.V.

Signature: /s/ Christoph Appel Name/Title: Christoph Appel / Attorney-in-fact Date: 10/29/2026

T-Mobile Global Holding GmbH

Signature: /s/ Christoph Appel Name/Title: Christoph Appel / Attorney-in-fact Date: 10/29/2026

T-Mobile Global Zwischenholding GmbH

Signature: /s/ Christoph Appel Name/Title: Christoph Appel / Attorney-in-fact Date: 10/29/2026

Exhibit 70

SCHEDULE A-1

Schedule A-1 is amended and restated as follows:

Directors and Executive Officers of T-Mobile Global Holding GmbH

The following table sets forth the names, business addresses and present principal occupation of each director and executive officer of T-Mobile Global Holding GmbH. Unless otherwise noted, each of the persons listed below is principally employed by T-Mobile Global Holding GmbH and is a citizen of the Federal Republic of Germany. During the last five years, to the best of each Reporting Person’s knowledge, no person on Schedule A-1 has been (a) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (b) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which proceeding such person is or was subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

Board of Management

Exhibit 71

SCHEDULE A-3

Schedule A-3 is amended and restated as follows:

Directors and Executive Officers of Deutsche Telekom AG

The following tables I and II set forth the names, business addresses and present principal occupation of each director and executive officer of Deutsche Telekom AG. Unless otherwise noted, each of the persons listed below is principally employed by Deutsche Telekom AG and is a citizen of the Federal Republic of Germany. During the last five years, to the best of each Reporting Person’s knowledge, no person on this table has been (a) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (b) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which proceeding such person is or was subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

I.   Board of Management

^† = citizen of Argentina and Germany

* = citizen of Belgium

 II.  Supervisory Board

* = citizen of Greece

ⁱ = citizen of the United Kingdom and Germany

⁰ = citizen of the United States of America

** citizen of Sweden and Germany

Exhibit 72

SCHEDULE A-4

Schedule A-4 is amended and restated as follows:

Directors and Executive Officers of Deutsche Telekom Holding B.V.

The following table sets forth the names, business addresses and present principal occupation of each director and executive officer of Deutsche Telekom Holding B.V. Unless otherwise noted, each of the persons listed below is principally employed by Deutsche Telekom Holding B.V. and is a citizen of the Federal Republic of Germany. During the last five years, to the best of each Reporting Person’s knowledge, no person on this table has been (a) convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors) or (b) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which proceeding such person is or was subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

* = citizen of the Netherlands