iPhone4 - "No Sim Installed" Error

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

  1. Reimer macrumors regular


    Sep 15, 2006
    This is an iPhone4 that I've been using with a SIM card that I cut into a micro-sim myself for the past year without any issues. It was on 4.2.1 and I never bothered updating.

    I decided to give the phone to my sister. So I wiped the phone and did an upgrade to iOS 5.0.1 and popped her card in. Trying over and over again, I could not get the phone to detect the SIM card.

    I tried popping my old card back in and got the same "No SIM Installed" error again. I even tried a third SIM with the same results.

    I then did a little searching and see that it's a common problem, possibly attributed to the SIM tray.


    I've tried using tape on the card and on the tray. I've tried applying a little more force on the tray itself. I've gone and restored 5.0.1 with no change.

    Nothing is working. I found it strange it was working with my old SIM just fine and now, all of a sudden after the upgrade to 5.0.1, it won't detect any card now.

    Any ideas? TIA
  2. atlanticza macrumors 6502a


    Jul 18, 2008
    Cape Town
    Had a similar, intermittent issue. Discovered that the sim was faulty... but in your case, odds are that there is a 'mechanical' issue with your phone. Take it to an Apple store?

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