EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (Nos.333-189095, 333-202176, 333-225699, 333-142007 and 333-168946) of T-Mobile US, Inc. of our report dated February 6, 2020 relating to the financial statementsand the effectiveness of internal control over financial reporting, which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Seattle, Washington

February 6, 2020