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

There are two types of phones—those locked to a carrier and those free to use whatever carrier they want. There will come a time when you need to know which one your phone is. Thankfully, you'll have ...

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 ...