Key Highlights

● Total Revenue rose 7.4% to $23.584 billion in the third quarter.

● Core adjusted EBITDA climbed 10.8% to $9.62 billion.

● The company returned $3.5 billion to shareholders through Buybacks and dividends.

● Full-year adjusted free Cash Flow guidance now spans $18.7 billion to $18.8 billion.

T-Mobile US, Inc. (NASDAQ:TMUS), a constituent of the S&P 500, is back in focus after reporting third-quarter 2026 results on October 28, 2026 and lifting the midpoint of several full-year targets. The company reported Net Income of $3.455 billion and Diluted Earnings per Share of $3.22, while guidance for core adjusted EBITDA and adjusted free cash flow moved higher. For readers following U.S. wireless, the update offers a snapshot of how scale, cash generation and Shareholder returns interact.

Latest Company Context

According to the company's Form 8-K exhibit for the quarter ended September 30, 2026, T-Mobile reported total revenues of $23.584 billion, up 7.4% from a year earlier. Service revenues reached $19.375 billion, up 6.2%, and postpaid service revenues rose 9.3% to $16.269 billion. Net income increased 27.3%, while core adjusted EBITDA climbed 10.8% to $9.62 billion. The company added 274,000 postpaid net accounts, bringing total postpaid accounts to roughly 34.97 million, and adjusted free cash flow was $5.071 billion, up 5.3%. T-Mobile also returned $3.5 billion to shareholders in the quarter, including $2.4 billion of buybacks and $1.1 billion of dividends, under an authorization of up to $18.2 billion through December 31, 2026.

Key Business and index Drivers

Company guidance for full-year 2026 now calls for core adjusted EBITDA of $37.35 billion to $37.45 billion, net cash from Operating Activities of $28.7 billion to $28.8 billion, and adjusted free cash flow of $18.7 billion to $18.8 billion, with each midpoint raised. The effective tax rate range was lowered to 24%-25% from 25%-26%, while postpaid net account additions are still expected at roughly 1.0 million and capital expenditures at about $10.0 billion.

Because T-Mobile is an S&P 500 constituent, its results may carry weight for index-tracking portfolios and for comparisons across communication services. Key drivers include postpaid account growth, pricing and mix, cost discipline and the pace of capital returns. The release also shows postpaid service revenue growth of 9.3% against 6.2% for total service revenues, which indicates the postpaid base is a main contributor to growth.

What Investors Should Watch

Investors may watch whether postpaid account additions stay on track toward the roughly 1.0 million target as the fourth quarter proceeds, since that is the metric guidance leaves unchanged. Competitive intensity among large U.S. carriers could influence both customer growth and promotional costs, although the effect is uncertain. Because the buyback authorization runs through December 31, 2026, investors may also look for commentary on future capital return plans when full-year results arrive. Free cash flow conversion matters too: the raised $18.7 billion to $18.8 billion range provides a benchmark against which later reporting can be compared. Capital spending, tax rate and any regulatory developments could also shape how guidance evolves.

Cash Generation Sets the Benchmark

T-Mobile's third-quarter report paired solid reported growth with a modestly higher full-year outlook for earnings and cash flow measures. As an S&P 500 constituent, the company remains a widely tracked name, and the coming quarters could show whether account growth and cash generation keep pace with guidance.