Item 7.01 - Regulation FD Disclosure.

On January 6, 2022, T-Mobile US, Inc. (the "Company") issued a press release announcing selected customer information for the quarter and year ended December 31, 2021.

A copy of the Company's press release is attached as Exhibit 99.1 .

The information contained in this report will not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as may be expressly set forth by specific reference in such a filing.

Item 9.01 - Financial Statements and Exhibits.
(d) Exhibits:
Exhibit             Description
  99.1                Press release, dated January 6, 2022, entitled "    T-Mobile Posts Record-High
                    Customer Results, Adding 1.2 Million Postpaid Accounts and 5.5 Million Postpaid
                    Customers in 2021    "
104                 Cover Page Interactive Data File (formatted as inline XBRL and contained in
                    Exhibit 101)

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