10.1.1(14B100) update
After I received a software update today, my phone restarted.
Then the SIM has been searching for a long time and says No SIM.
I tried resetting but no use. Someone can please help me....
iPhone 6s Plus, iOS 10.1.1
Did you try to set your device back to factory settings and restore from the latest backup you made in iTunes?
Use iTunes to restore your iOS device to factory settings - Apple Support
Here are some more steps to try:
- Check for a Carrier Settings Update.
- Update your iPhone or iPad to the latest version of iOS.
- Take out the SIM card and put it back in. If the SIM card is damaged, or doesn't fit in the SIM tray, contact your carrier.
- Reset your Network Settings. Tap Settings > General > Reset > Reset Network Settings. This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before.
- If you have another device, see if you can connect your carrier's network with it in that location.
- Contact your carrier to:
- Verify that your account is active and in good standing.
- Make sure there are no outages in your area.
- Check that your device isn't blocked from receiving cellular services and is set up with the right data plan.
If you still can't connect to a cellular network, and have confirmed with your carrier that there isn't an issue with your account or network, try restoring your device.
copied from: If you can't connect to a cellular network or cellular data - Apple Support