Core Insights - T-Mobile added 1 million wireless subscribers in Q3, exceeding estimates and raising its annual forecast, driven by iPhone upgrades and premium plans [1][3] - The company’s shares fell 1.5% premarket after increasing its annual capital expense forecast by $500 million to approximately $10 billion [1] Subscriber Growth - The addition of 1 million monthly bill-paying subscribers marks T-Mobile's highest growth in Q3 in over a decade, surpassing analyst expectations of 844,900 additions [3] - T-Mobile's premium plans have attracted a larger share of customers switching from competitors in a highly competitive market [2][3] Device Upgrade Impact - Device upgrade cycles typically increase costs for telecom operators due to the need to purchase handsets and offer discounts to retain customers [2] - The third quarter is crucial for U.S. wireless carriers as new iPhone models usually lead to a surge in upgrades and new subscriptions [2] T-Satellite Plan - T-Mobile's T-Satellite plan, launched in July, allows users in remote areas to connect, with most users opting for it through the "Experience Beyond" plan at no extra cost [4] - The T-Satellite service has expanded to support popular apps like WhatsApp and Google Maps, enhancing its appeal [5] Financial Performance - T-Mobile reported total revenue of $21.96 billion for Q3, slightly above the expected $21.92 billion [6] - The company now anticipates adding between 7.2 million and 7.4 million total postpaid net customers in 2025, an increase from the previous projection of 6.1 million to 6.4 million [5]