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

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.

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.

The reason for activating a SIM card lock is due to SIM phishing. Scammers use SIM phishing, also known as SIM swapping, to gain access to your SIM card and control your mobile device.

Activate your T-Mobile SIM or eSIM today and tap into the network that delivers one of the fastest 5G experiences ...

The location of your SIM card will depend on your iPhone model. If you’re using an iPhone 14 or newer sold in the U.S., you won’t be able to find a physical SIM card as there isn’t one.

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.