A "locked" phone, in essence, contains modified software that restricts its cellular connectivity to one carrier. For example ...

It doesn’t take much to set your phone free so that you can bring it along with you. Here’s how to unlock an AT&T phone by yourself. To unlock your AT&T phone, the company has a few ...

Luckily, AT&T makes unlocking your phone easy. When you unlock a phone, you become its full owner, no strings attached. This means you can then switch cell phone providers without losing your phone.

AT&T enables unlocking of paid-off phones after 60 days for postpaid users ... AT&T told the FCC that "requiring providers to unlock handsets before they are paid-off would ultimately harm ...

AT&T executives met with the FCC to explain why ... Others, like T-Mobile, won’t let you unlock your phone until you’ve stayed on their network for a certain number of days, even if the ...

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So since there doesn’t seem to be a quick reference guide for figuring out if a particular unlocked phone will work ... to throw one together. Verizon, AT&T, T-Mobile, US Cellular, Dish (Boost ...