iPhone 4s No Sim

Discussion in 'iPhone' started by sicdeath, Dec 17, 2014.

  1. sicdeath macrumors member

    Joined:
    Jul 12, 2011
    #1
    I have a factory unlocked iPhone 4s which was working perfectly fine until I upgraded to another phone. Now, when I insert my sim into the 4s, its saying no sim or invalid sim. I'm not sure what the problem is but its running ios 7.1 and I want to avoid updating it to ios 8. Any suggestions?
     
  2. Newtons Apple macrumors P6

    Newtons Apple

    Joined:
    Mar 12, 2014
    Location:
    Jacksonville, Florida
    #2
    Even being unlocked the 4S may not be able to use ANY SIM card.

    What carrier is the SIM card for?
     

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