When you buy a new phone from AT&T Wireless, your eSIM or SIM card is set up and activated. However, when you switch to AT&T ...

Use these steps to activate a physical SIM card on your device or to switch your physical SIM to a new one. Looking to switch from a physical SIM to eSIM or to setup eSIM on your device? Visit setup ...

You have more than one option for activating a SIM. There's the traditional physical card that you insert into your favorite ...

Before you can activate your SIM, you need to know which type of SIM your device supports, allowing you to choose between an eSIM or a physical SIM card. Here's how to check this out on Android or ...