Depending on where you buy it, your Android phone may be unlocked and can support SIM cards from any carrier, or it could be carrier-locked and require specific SIM cards. While it’s not always ...

Unlocking your Android phone lets you swap networks or make internal changes. SIM unlocking enables the phone to utilize various carriers ... to faulty methods or software compatibility difficulties.

The Federal Communications Commission (FCC) is proposing a new rule that would require carriers to unlock devices within 60 days of activation. Currently, unlocking requirements are left up to the ...

Quick tip: If the phone is already unlocked, T-Mobile's site offers a guide for using the phone with other carriers. How to unlock an Android phone on T-Mobile The process will vary slightly ...