Phones aren't improving as fast ... an easy operation. These "unlocked," network-neutral phones also make it easier to travel internationally. The smartphones below, which are arranged ...

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 ...

Network carriers T-Mobile and AT&T released their response ... At the end of the day, two-year contracts and "subsidized" ...