Aug 19, 2025 · Many devices use a physical SIM card that is already inserted in the device. If you use a different SIM, you might not be able to access our wireless network or use all our …

Learn how to buy one, install or replace it, and change or activate a SIM card/eSIM.

Learn how to setup and activate a new SIM card. Replace a lost card or install a new one when you bring your own device (BYOD) and switch to Verizon mobile.

Mar 15, 2025 · Activating a SIM card is a straightforward process that can be completed in a few simple steps. Whether you’re switching to a new mobile network provider or replacing an old …

May 15, 2025 · Insert your SIM card into your phone while it is powered off. Turn your phone on. Follow the on-screen setup prompts. Call 1-800-T-MOBILE to complete the process.

Jun 8, 2025 · Did you get a new SIM card and need to activate it with AT&T? Activation is just a phone call away, as long as the person calling is an account owner or retail authorized user.

Apr 6, 2025 · In this step-by-step guide, we will walk you through the process of activating your new SIM card. Whether you have just purchased a new phone or switched to a different …

Aug 13, 2025 · To activate your new SIM card, begin by powering off your phone and inserting the SIM card into its designated tray. Once it’s securely in place, turn the phone back on. In many …

Oct 1, 2025 · In this article, we'll explain how to activate your SIM card across major carrier networks, including T-Mobile, Verizon, and AT&T. These instructions apply whether you're …

Learn how to activate your AT&T prepaid phone with this guide for new devices, eSIM cards, and SIM cards. Need help? Get in touch with our customer care team.