Does AT&T require SIM cards?

Yes, AT&T does require SIM cards for their services. A SIM card, or Subscriber Identity Module, is a small chip that is inserted into a mobile device. It identifies and connects the device to a wireless network, allowing it to access services such as voice calls, text messages, and data.

AT&T provides SIM cards to customers when they purchase a device or a plan from AT&T. If you already have a compatible device, you can simply insert the AT&T SIM card into it. The SIM card contains information about your subscription details, such as your plan, your number, and your service details.

AT&T also supports eSIMs, or embedded SIMs. An eSIM is a digital SIM that’s already on your device. You don’t need to insert an eSIM into your device because it’s built into your phone. You just need to download the eSIM settings to your device. This can be a convenient option if your device supports it.

For 5G services, you don’t need a new 5G SIM card to access 5G services on AT&T’s network in the US. However, you need to move to a 5G data plan.

In conclusion, whether you’re using a physical SIM card or an eSIM, AT&T requires a SIM to connect your device to their network and provide you with mobile services.