2 Replies Latest reply: Apr 22, 2012 7:22 PM by tyler39
LUMIA Level 1 Level 1 (0 points)

I have an iPhone 4S and I was using the phone but now I have a message that say "no sim" and the sim is inside. Is recognizing the sim.

there s something I can do, or need to replace the sim?


Thank you

iPhone 4S, iOS 5.1
  • randers4 Level 9 Level 9 (62,640 points)

    If your phone wasn't officially unlocked  and you recently updated the iOS, the updat relocked the phone to the original carrier and you will have to contact the carrier it is locked to about unlocking it.  If that is not what happened, then try turning the phone off (hold the on/off button until your see the off slider, slide to turn off), remove and reinsert the SIM (see http://support.apple.com/kb/HT5163), then turn it back on.

  • tyler39 Level 2 Level 2 (360 points)

    The iPhone 4S cannot be unofficially unlocked. The 4S has a known issue with the sim card. Try resetting the iPhone and reinstalling the sim. If it still does not work go to your carrier and pick up a new sim.