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

An unlocked phone is the key to getting service from an alternative carrier. Here's how to check if a phone is unlocked.

Knowing how to unlock a disabled iPhone can save you a lot of trouble. Here's how to do it, even if you've forgotten the password.

What does it mean if your iPhone is locked? If your iPhone is carrier-locked, it's only going to work with the cellular provider that locked it. However, if your iPhone isn't locked, you'll be able to ...