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SCOTTAFF

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Q: My iphone 4s has developed an invalid sim message I can't make any calls or recieve any at present

My Iphone 4s has developed a fault invalis sim any help out there how to fix this

iPhone 4S, iOS 7.1

Posted on Mar 11, 2014 12:59 AM

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Q: My iphone 4s has developed an invalid sim message I can't make any calls or recieve any at present

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by Ingo2711,

Ingo2711 Mar 11, 2014 3:04 AM in response to SCOTTAFF
Level 7 (25,977 points)

iPhone

Mar 11, 2014 3:04 AM in response to SCOTTAFF
Did you already check this article for more information?

Update your iPhone to the latest version of iOS.
Toggle Airplane mode On and Off.
Try turning iPhone off and then on again.
Check for a carrier settings update. Tap Settings > General > About. If an update is available, a prompt will appear.
Remove the SIM Card and verify that it is a valid, carrier-manufactured SIM. Also verify that it is not damaged, worn, or modified. Then reinsert it.
Restore the iPhone.
If you still are unable to resolve this issue, contact Apple support for further assistance.
copied from Troubleshooting iPhone hardware
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