How to check if your iPhone is unlocked so you can change your wireless carrier

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

How to port your number from AT&T to another carrier

Nida is a tech and telecom journalist with more than five years of writing experience. She graduated from the University of Toronto with a BA in journalism. AT&T is one of the largest and most popular ...
Android Police

Metro By T-Mobile: How to transfer your phone number to a different carrier

Nida is a tech and telecom journalist with more than five years of writing experience. She graduated from the University of Toronto with a BA in journalism. Metro by T-Mobile offers affordable prepaid ...
BGR

3 Ways To Check If Your Android Phone Is Carrier-Locked

It's not always easy to tell if an Android device is locked to a cellular/wireless provider, but there are methods to retrieve this information. If your device is locked, it will only take SIM cards ...