Unlocked Samsung Galaxy S3 my AT&T Sim is not recognized

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Unlocked Samsung Galaxy S3 my AT&T Sim is not recognized

I purchased and unlocked a Galaxy S3. I sim unlocked it, but it doesn't recognize my AT&T sim. The sim I have works fine in my Lumia 900 though. Anyone have any suggestions?

Thanks 

Message 1 of 6 (4,676 Views)
Scholar

Re: Unlocked Samsung Galaxy S3 my AT&T Sim is not recognized

Sounds to me like it's locked did u buy from a auction site?
Contact ur seller Smiley Happy
Message 2 of 6 (4,672 Views)
Contributor

Re: Unlocked Samsung Galaxy S3 my AT&T Sim is not recognized

its positively not locked before I unlocked I entered the code to display lock status, after I entered the code did the same and it said lock off. I got lock success after entering code. Not my first time unlocking a phone just for information
Message 3 of 6 (4,669 Views)
Scholar

Re: Unlocked Samsung Galaxy S3 my AT&T Sim is not recognized

Try Calling AT&T up maybe its something to do with the IMEI on that Phone

perhaps it needs to be registered ? call them Smiley Happy

Message 4 of 6 (4,569 Views)
Contributor

Re: Unlocked Samsung Galaxy S3 my AT&T Sim is not recognized

i dont know what is was, like i said the sim worked in my lumia. i got another sim and it worked

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Scholar

Re: Unlocked Samsung Galaxy S3 my AT&T Sim is not recognized

Yeah it sounds strange that it wont work with ur sim card and ok in ur Nokia
Btw Have you got access to another sim card on another carrier to check
In the phone? Prepaid card?

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