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Jan 26, 2016 11:10 AM in response to ipplussby pedro d,Hello there, ippluss.
It seems you're receiving an alert about the SIM card in your iPhone. The following Knowledge Base article offers up some great steps for troubleshooting:
If you get an alert about the SIM card in your iPhone
If you see an alert that says "Invalid SIM" or "No SIM Card installed," follow these steps.
- Make sure that you have an active plan with your carrier.
- Update your iPhone to the latest version of iOS.
- Turn airplane mode on and then off again.
- Restart your iPhone.
- Go to Settings > General > About and check for a carrier settings update.
- Remove your SIM card from the SIM card tray and then put the SIM card back. Make sure that the SIM tray closes completely and isn’t loose. If you use a SIM tray from a different model iPhone or from another phone manufacturer, it might not fit properly.
- Try using another SIM card. If you don't have one, go to your carrier's retail store and ask them to test with another SIM card. You might need to replace your SIM card.
If you still see an alert about your SIM card, contact Apple support.
Learn what to do if you see a SIM not supported alert.
There is some additional information available in this article, if your issue is more related to issues of forgetting your password:
If you forgot the passcode for your iPhone, iPad, or iPod touch, or your device is disabled
Thanks for reaching out to Apple Support Communities.
Cheers.
