A pop up message enter the password for [email protected] in settings comes everytime I turn on the data or connect to internet using wifi and when selecting OK and entering id password in settings the popup comes again and again. Even I used the same ID password in different device and it was accepted so it proves that I am not using an incorrect password but still unable to use it on this device. After backing up and using it from the start the error was resolved but after restoring the same problem arises again and again. Also unable to use iCloud due to this. Please help.