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

Consumer Reports has no financial relationship with advertisers on this site. Unlocking your cell phone lets you switch carriers without buying a new device. All carriers are required to let you do ...

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.

In addition to using the phone on a rival domestic carrier, many users may want to unlock their iPhones for traveling to international destination. This way, they can use a prepaid local SIM card ...

Forbes contributors publish independent expert analyses and insights. I am an investigative attorney and physical security specialist. If you ask most cell phone users what they understand the term ...

A new iPhone 4S accessory claims to successfully SIM unlock all models of the AT&T Apple iPhone 4S running iOS 5.0 and 5.0.1 firmware. As AT&T, unlike rivals Sprint and Verizon Wireless, does not yet ...

In this edition of Ask Maggie, CNET's Marguerite Reardon explains how wireless operators have manipulated the market to ensure you can't take your iPhone 4S to any other U.S. carrier you want.

Shawn is a software engineer and a mobile tech degenerate by night. His daily drivers are a Galaxy S7 Edge and an iPhone 6S Plus. Ever since the Nexus 5, Sprint seems to be ever more accepting of ...