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T Consistent and Profitable Customer Growth ● Postpaid net additions of 1.3 million , best in industry and raising 2021 guidance Postpaid phone net additions of 627 thousand , 2.5x more than last year Postpaid account net additions of 349 thousand , best in industry and record - high Record Financial Results Drive 2021 Guidance Raise for Second Consecutive Quarter Total revenues of $ 20.0 billion grew 13 % year - over - year Service revenues of $ 14.5 billion grew 10 % year - over - year , best growth in industry Net income of $ 978 million , 8x more than last year , diluted earnings per share ( " EPS " ) of $ 0.78 , and Adjusted EBITDA ( ¹ ) of $ 6.9 billion Core Adjusted EBITDA ( ¹ ) of $ 6.0 billion grew 7 % year - over - year , best growth in industry and raising 2021 guidance ● T - Mobile Raises 2021 Guidance Across the Board Again and Delivers Record Financial Results in Q2 Industry - Leading Growth in Service Revenues , Profitability and Cash Flow ● EXHIBIT 99.1 ● Net cash provided by operating activities of $ 3.8 billion increased $ 3.0 billion year - over - year , raising 2021 guidance Free Cash Flow excluding gross payments for the settlement of interest rate swaps ( ¹ ) of $ 1.7 billion , grew 16 % year - over - year , best growth in industry and raising 2021 guidance America's Largest , Fastest and Most Reliable 5G Network Further Extends its Lead Extended Range 5G covers 305 million people and 1.7 million square miles - more geographic coverage than Verizon and AT & T combined Ultra Capacity 5G covers 165 million people with average speeds of 350 Mbps , on track to cover 200 million people nationwide by end of year Seven independent third - party network benchmarking reports highlighted T - Mobile's 5G leadership in 2021 Network Integration Progress Fuels Higher Merger Synergies Approximately 80 % of Sprint customer traffic is now carried on the T - Mobile network One - third of Sprint customers have been moved to the T - Mobile network Raising 2021 merger synergies guidance for the second quarter in a row BELLEVUE , Wash . - July 29 , 2021 - T - Mobile US , Inc. ( NASDAQ : TMUS ) reported second quarter 2021 results today , delivering industry - leading postpaid net additions and record service revenues , Core Adjusted EBITDA and Free Cash Flow , while raising 2021 guidance across the board for the second consecutive quarter . The company's diversified growth strategy and network leadership contributed to record postpaid account growth and industry - leading sequential churn improvement . " Stellar postpaid customer gains and industry - leading service revenue growth translated into industry - best growth in profitability and cash flow , and drove another beat and raise quarter - all fueled by unprecedented synergies that only T - Mobile can deliver , " said Mike Sievert , CEO of T - Mobile . " As we capitalize on our 5G leadership , it's increasingly clear that our unmatched network , outstanding value and customer - centric experiences are setting the Un - carrier apart from everyone else . " ( 1 ) Adjusted EBITDA , Core Adjusted EBITDA and Free Cash Flow , excluding gross payments for the settlement of interest rate swaps , are non - GAAP financial measures . These non - GAAP financial measures should be considered in addition to , but not as a substitute for , the information provided in accordance with GAAP . Reconciliations for these non - GAAP financial measures to the most directly comparable GAAP financial measures are provided in the Reconciliation of Non - GAAP Financial Measures to GAAP Financial Measures tables . We are not able to forecast Net income on a forward - looking basis without unreasonable efforts due to the high variability and difficulty in predicting certain items that affect Net income including , but not limited to , Income tax expense , stock - based compensation expense and Interest expense . Adjusted EBITDA and Core Adjusted EBITDA should not be used to predict Net income as the difference between either of the two measures and Net Income is variable . 1 Q2 2021