TMUS · T-Mobile US, Inc.

Ahead of hurricane and wildfire season, AI-powered network intelligence, satellite connectivity and advanced emergency response capabilities are helping keep communities and first responders connected in critical moments. The National Oceanic and Atmospheric Administration (NOAA) predicts a potential Super El Niño this summer, which could bring increased risk of extreme weather. As T-Mobile (NASDAQ: TMUS) works with communities across America to prepare, it is strengthening emergency preparedness through continued investments in network resilience, intelligent technologies and expanded support for communities and first responders. In 2025 alone, T-Mobile supported communities and first responders through more than 60 disaster events nationwide and deployed thousands of assets to help maintain connectivity, including thousands of generator deployments and refueling missions. Key highlights: AI-powered network intelligence restoring connectivity faster , including tens of thousands of

Q1 Is Yet Another Proof Point That the Un-carrier’s Winning Formula of Best Network, Best Value and Best Experiences Drives New and Deepening Customer Relationships, Translating to Outsized Financial Results T-Mobile US, Inc. (NASDAQ: TMUS): Accelerating Account Growth and Deepening Customer Relationships Fueled by Widening Differentiation Postpaid net account additions of 217 thousand, grew 6% year-over-year Postpaid Average Revenue Per Account (“ARPA”) of $151.93 grew 3.9% year-over-year Translating Strong Account Growth into Durable and Profitable Financial Growth(1) Service revenues of $18.8 billion grew 11% year-over-year, industry-leading growth Postpaid service revenues of $15.6 billion grew 15% year-over-year, industry-leading growth Net income of $2.5 billion decreased 15% year-over-year and included the impact of UScellular merger-related costs, including accelerated depreciation, net of tax, of $476 million Diluted earnings per share (“EPS”) of $2.27 decreased 12%

Powered by America’s fastest 5G internet and integrated with Starlink, SuperBroadband delivers virtually unbreakable connectivity Aramark Destinations, a leader in hospitality and experience services, has already chosen SuperBroadband for built-in redundancy, unmatched coverage and simplified operations The new era of business internet is out of this world! Today, T-Mobile (NASDAQ: TMUS) unveiled SuperBroadband, a revolutionary business internet solution that brings together the largest nationwide 5G Advanced network and Starlink Broadband to deliver ultimate redundancy, unmatched coverage and simplified operations for businesses nationwide. Already, industry leaders across hospitality, retail, healthcare and oil and gas sectors are using SuperBroadband to simplify and strengthen the resiliency of their operations. “Across our destinations — many in some of the most remote and complex environments in the country — connectivity has traditionally been inconsistent and difficult to