If there are any contacts saved as phone, they will first need to be copied to the Google account for them to be backed up:
You must be logged in to a Google account to back up your apps. From the Home screen, tap the Apps icon.
If there are any contacts saved as phone, they will first need to be copied to the Google account for them to be backed up:
You must be logged in to a Google account to back up your apps. From the Home screen, tap the Apps icon.
