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Old Feb 4, 2012, 05:52 PM   #1
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Join Date: Feb 2012
SIM card failure error on unlocked 3GS

Hi, I'm brand new on here so please be nice.

I just went through the jailbreak and unlock process on my 3GS, and am trying to put in my T-Mobile SIM card to use. I keep getting an error message popping up that says "SIM Failure" and then the upper left hand corner shows Invalid SIM. I have confirmed my baseband as 06.15.00. Any suggestions?


Also, nothing is wrong with the SIM. It works in my phone from T-Mobile.

I've also tried turning the phone off and on a couple times.
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