Apple id verification failed. There was a problem connecting to the server.

Iphone authentication failed. Unable to connect to the server may be due to incorrect account password or abnormal network connection.

You can switch to another network or turn on the cellular network to move data, and then try to log in to the AppleID again.

It is also possible that there is something wrong with the system. You can restart your mobile phone and see if it has been restored.

If it still doesn't work, you can try to restore the network settings.