Invalid Sim/Sim Failure Iphone 4s Unlocked T-mobile

Discussion in 'iPhone Tips, Help and Troubleshooting' started by chen04, Dec 7, 2011.

  1. chen04 macrumors newbie

    Oct 17, 2011
    I keep getting an Sim Failure/Invalid Sim after a few days using my iphone 4s. If I power on/off it starts working normally again, but the problem is reoccuring. I did trim the sim using a sim cutter, do I need to goto the t-mobile store and get a micro sim? Any help is appreciated.

  2. Applejuiced macrumors Westmere


    Apr 16, 2008
    At the iPhone hacks section.
    Might be a bad sim or maybe its not sitting right in the tray.
  3. chen04 thread starter macrumors newbie

    Oct 17, 2011
    It works when I power on/off the phone. Is it still the sim? Bad iphone?

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