To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.

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 ...

Changing physical SIM cards on your phone is always a fiddly business. First, you have to root for the little SIM tray tool ...

You can check to see if your iPhone is unlocked from a carrier using any of a few different methods.

Once you’ve activated your iPhone with your carrier, it should continue to work on the cellular network without any problems as long as you’re within range of a tower. Nevertheless, the vagaries of ...

A dual-SIM setup lets you use one phone to make and receive calls and texts from two numbers. It's also super convenient and can save you serious cash when traveling. We show you how to use two SIMs ...