SIM FAILURE. Help :,(

Discussion in 'iPhone' started by AllanR, Jul 6, 2010.

  1. AllanR

    AllanR New Member

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    Device:
    iPhone 3GS (Black)
    I have a 3GS that I unlocked with blacksn0w and when I enter my tmobile sim card a pop up appears saying SIM Failure and on the top left it says Invalid SIM. Help, what do I do?
  2. ripply

    ripply Active Member

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    Device:
    iPhone 4 (Black)
    To say invalid sim this means it's not unlocked. Go in cydia and install ultrasn0w. This should unlock it for sure
  3. AllanR

    AllanR New Member

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    Device:
    iPhone 3GS (Black)
    It was unlocked its that I used blacksn0w which might have not worked so I used redsn0w and its worked fine. Thank you for your answer

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