IPhone doesn't recognize my SIM Card after update to iOS 5.1

I updated my iOS to 5.1 yesterday and after that my iPhone doesn't recognize my SIM Card. What has happened to my iPhone?

It was probably jailbroken or hacked to unlock it. If that's the case it is now bricked. You may be able to find an answer on Google, but you cannot get help here.

Similar Messages

  • HT4972 Why won't my iPhone 4 recognize my sim card after update?

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    Usually this means the phone was previously jailbroken or hacked to unlock it from the carrier it was locked to, and the update re-locked it to that carrier.

  • IPhone 3GS can not detect SIM Card after upgraded to iOS 6.0.1

    Guys I really need your advice please...
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    rzulfikar wrote:
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    If it now says "invalid" or "unsupported" SIM, your iPhone was almost certainly hacked to unlock it from the original cell carrier and updating has now removed that hack and the iPhone has relocked back to that original carrier. You will have to contact that carrier and ask if it would be possible to get your iPhone officially unlocked.
    Regards.

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    Hi, gurpreet from chatham.  
    Thank you for visiting Apple Support Communities.
    Here are some troubleshooting steps that I would recommend going through when experiencing this issue.  
    iOS: Not responding 
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    I was totally depressed by you.My iphone 4s is having a problem with sound after updating to ios 7.0.3.No sound via music player. Some times i can hear sound but it is repeating same problem,suddenly sound disapears.I think it is the problem with the software ios 7.
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    Hello everyone, I am having the exact same issue. My charger stopped working following 7.0.3 upgrade. I since bought couple more charger (must admit one was definately counterfiet; and the other one what I believe to be genuine purchased from ebay). I even tried my friend's genuine apple charger that came with his 5s which is also not working.
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  • How can I get my iPhone 3GS to recognize my AT&T SIM card after upgrade to iOS 5.1?

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    Thanks!

    I did.
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    Good job on your attempts to troubleshoot the issue already. Wanted to point out a good article I found:
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    http://support.apple.com/kb/ts1702
    Although it states it's for purchased apps it has specific steps to try that might still be helpful in your situation. Specifically Steps 4 and 5 have always been useful for me:
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    If the issue affects only a single app, try closing just that app:
    Press the Home button to return to the Home screen.
    Double-tap the Home button to display recent apps.
    Tap and hold the affected app until the red minus appears.
    Tap the red minus to quit the app.
    Press the Home button, then restart the app.
    5. Restart your device
    Hold the Sleep/Wake button until "slide to power off" appears. Slide to power off your device. When it is off, press the Sleep/Wake button to turn it back on.
    Thanks for reaching out to us on Apple Support Communities.
    Cheers,
    Pedro D.

  • TS1363 why does my iphone 3gs not recognize my sim card?

    I can't activate my iphone 3gs.. Its not recognizing my sim card.. what do I need to do?

    Replace the SIM card.

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