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

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

To unlock your iPhone from its carrier, you'll likely need to contact your carrier directly to cancel your contract.

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 ...

You're probably already familiar with the SIM card, a tiny chip in your phone that connects it to your cell phone carrier of choice. For years, this chip was on a physical card that you could swap in ...