Google Authenticator iOS backup
TL;DR Creating an encrypted iOS backup in iTunes will back up your accounts held in Google Authenticator.
Having suffered performance issues with the iOS 11.1.1 update, I decided to restore my iPhone to factory settings, then restore from a backup but worried that I would lose the accounts held in Google Authenticator.
Are Google Authenticator accounts saved as part of iOS Backups?
I’m happy to report that if you create an encrypted iPhone backup in iTunes then all the accounts in Google Authenticator will be backed up, and will be present and correct when you restore your iPhone from your backup.
UPDATE: I’ve since had varying results restoring a new iPhone from a backup – your mileage may vary!