T-Mobile Posts 'Greatest Q2 For Growth Ever' With Record Customer Gains, Eyes $1.5 Billion Tax Benefit From Trump's 'One Big Beautiful Bill'

T-Mobile US Inc. (NASDAQ:TMUS) announced a stellar second quarter for 2025, with President and CEO Mike Sievert declaring it the “greatest Q2 for growth ever in T-Mobile US’s storied history.”

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What Happened: The Un-carrier delivered record-setting postpaid net additions and significant financial gains, further cementing its position as a market leader.

When compared to AT&T Inc. (NYSE:T), T-Mobile continued to be the market share gainer in the telecom industry, adding more customers than AT&T for 23 quarters in a row.

T-Mobile has added more customers than AT&T for 23 quarters in a row.They continue to be the market share gainer in the telecom industry.$TMUS: +4.5% AH pic.twitter.com/rGQXaoj0F2

— Fiscal.ai (formerly FinChat) (@fiscal_ai) July 23, 2025

The company also surpassed its goal of achieving 20% household market share in smaller and rural areas by 2025, demonstrating strong penetration beyond urban centers.

Adding to its robust financial outlook, T-Mobile anticipates a substantial $1.5 billion cash tax benefit in 2026 stemming from the recently enacted One Big Beautiful ...