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Mar 5, 2014 6:14 AM in response to RickPeeplesby Allen A,Hello RickPeeples,
We've an article that provides some additional troubleshooting that may be able ot stabilize your phone's ability to recognize your SIM card.
Resolution
If you encounter any of the above symptoms on your iPhone, try these steps to attempt to resolve the issue:
- 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.
iPhone: Troubleshooting No SIM
http://support.apple.com/kb/TS4148
Cheers,
Allen
