Can Cricket Galaxy SIII be flashed to AT&T Service?

I have a Sampsung Galaxy SIII from cricket and I would like to used the phone for my new AT&T service. The AT&T rep said I could flash it over at a cricket store but the cricket store said they couldnt.

Is this possible? The phone has a sim card too, can I do this myself if I have the AT&T sim card?

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You should only need to unlock it since it has a GSM antenna.

not sure why you put this in the sprint forum... moving it.

Sorry im a newbie, did know it was a sprint forum! I currently use it, how do I unlock it? Thanks for your help in advance.

Originally Posted by ninaclaud

Sorry im a newbie, did know it was a sprint forum! I currently use it, how do I unlock it? Thanks for your help in advance.

No prob! I'm sure one of the unlockers in our vendor section can help: Cell Phone Market - Cell Phone Forums

A number of them unlock Samsung phones. You can send one of them a PM with your ESN and they can provide the unlock code and walk you through unlocking it for a small fee.