SIM card failure error on unlocked 3GS

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

  1. moosedance macrumors newbie

    Feb 4, 2012
    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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