how to activate iphone 4 after ios update
i have updated the ios on my iphone but after update it is not activating the sim card showing no service for any sim card.
could anyone please help me
Try these steps:
- If your carrier provided a SIM card, make sure it's in your iPhone.
- Restart the iPhone.
- Try to reach the activation server another way, then try to activate.
- Try connecting to a known-good Wi-Fi network if you can't activate using a cellular data connection.
- Try connecting to iTunes if you can't activate using Wi-Fi.
- Restore the iPhone.
- Check the system statusfor iOS Device Activation. If the iOS Device Activation status isn't green, try activating your iPhone later.
If you receive an alert recovery mode and perform a restore. If you still can't complete the setup assistant due to an activation error, contact Apple for assistance.
For more details, please read: Get help activating your iPhone - Apple Support