Switching carriers or using a different SIM card on your iPhone doesn’t have to be complicated. If your device is SIM-locked, ...

What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...

A SIM card stores your subscriber identity data, which is needed to connect to a carrier's network. But do you still need one in 2025?

Have you ever wondered exactly how a SIM card works? We'll help you understand why your phone needs one and what they do to keep you connected.

These two ways of connecting your phone to a cellular network are very different. We tell you about each and how you can switch from one to another.

Activate a new SIM card with Cricket According to Cricket's website, if you order your service online, you'll use the same avenue to activate your new SIM.

If you have a iPhone 13 or older, your device still has a physical SIM card. Here's a guide on how to remove it.