Need Help Fixing No Sim Problem

Discussion in 'Jailbreaks and iOS Hacks' started by imerix, Aug 9, 2011.

  1. imerix macrumors newbie

    Joined:
    Aug 9, 2011
    #1
    Hi,

    A few months ago I jail broke my Iphone 3G with the 4.2.1 firmware. Recently, it had been crashing regularly so I decided to do a downgrade. Using the shift-click method, I restored to 3.1.3. I then fixed the 1015 error using iREB. The problem now is the iphone will only show the screen saying "NO SIM card installed: Insert a valid SIM with no PIN lock to activate iPhone." The same SIM I have always used is currently in the phone. Hoping there is some way to fix this.

    Thanks alot!

    PS: My sleep button is broken aswell so any solutions involving DFU mode must require a way of getting into DFU mode without the sleep button
     
  2. Applejuiced macrumors Westmere

    Applejuiced

    Joined:
    Apr 16, 2008
    Location:
    At the iPhone hacks section.
    #2
    Sounds like a hardware issue if its not reading or identifying the sim inserted.
     
  3. imerix thread starter macrumors newbie

    Joined:
    Aug 9, 2011
    #3
    I doubt it is a hardware issue because the iphone experienced no trauma between before the restore (SIM worked fine) and after. Also, the SIM card currently works fine in my old phone.

    EDIT: Unless a software change could somehow affect hardware...?
     
  4. hexonxonx macrumors 601

    Joined:
    Jul 4, 2007
    Location:
    Denver Colorado
    #4
    I bought an 8GB 3GS last summer that has done the same thing off and on since. I was too lazy to exchange it and now the warranty is gone. The problem fixes itself after a few minutes so I was never really too worried. Mine just says no sim detected.

    Does yours do the same?
     
  5. imerix thread starter macrumors newbie

    Joined:
    Aug 9, 2011
    #5
    It only did it after fixing the 1015 error with iREB and it has not gone away since
     

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