SIM card failure error on unlocked 3GS

Discussion in 'Jailbreaks and iOS Hacks' started by moosedance, Feb 4, 2012.

  1. macrumors newbie

    Joined:
    Feb 4, 2012
    #1
    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?

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    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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