T-Mobile US, Inc. reported first-quarter earnings of $0.57 per share, significantly exceeding analyst forecasts of $0.41, driving a 3.4% increase in stock price. The company added 589,000 postpaid phone customers, surpassing estimates and achieving a total of 1.3 million postpaid net additions, solidifying its position against competitors AT&T and Verizon. Additionally, T-Mobile announced a stock buyback plan of up to $50 billion over three years, reflecting strong investor confidence as it continues expanding its 5G coverage to 95% of Americans.