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

If you need to find out your iPhone's carrier without a SIM card installed, you can do so through the Settings app.

Have you ever gotten a new phone only to find out it’s locked to a specific carrier? This often happens when you purchase a subsidized phone from a carrier. The carrier locks the phone so you can’t ...

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. I started my career with CNET all the way back in ...