HT201412: If your iPhone, iPad, or iPod touch won't turn on
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Q: I dropped my iphone 4. It showed a 'sim problem' window and now has no service.
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Jan 23, 2014 11:44 AMby Delgadoh,Hey 35Cotton,
I understand that you're encountering SIM/service issues on your iPhone. I would run through these troubleshooting steps 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.
Welcome to Apple Support Communities!
Take care,
Delgadoh
