Activate your phone, device or AT&T Prepaid SIM card purchased from Walmart, Target, drug, grocery or discount stores.

Jun 8, 2025 · The easiest solution is to bring your phone to an AT&T store so they can find and input your SIM information. Alternatively, use your IMEI, SIM card number, and call AT&T to …

In this video, I am going to show you how to activate your AT&T Prepaid SIM card online—step by step. Whether you're using a physical SIM or an eSIM, this guide will walk you through the...

Jun 25, 2025 · Both physical SIM and eSIM are supported, and AT&T makes it easy to activate either one with step-by-step instructions or a QR code.

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.

Jan 8, 2024 · Learn how to activate your AT&T Prepaid SIM card with our step-by-step guide. Follow these simple instructions to get your SIM card up and running in no time!

Mar 24, 2024 · You can follow this guide whether you have an AT&T prepaid or postpaid plan from the carrier or a prepaid card from another retailer.

Aug 3, 2025 · If you bought a prepaid SIM in-store, head to att.com/activateprepaid, and if you bought it online, use att.com/prepaid/activate-online. You can also activate by phone by calling …

Ready to activate your phone on the AT&T Wireless & AT&T Prepaid network? Get started here.

Jan 25, 2024 · In this comprehensive guide, we will walk you through the process of activating your prepaid AT&T SIM card. You will learn how to gather the necessary information, insert …