I second every part of this comment. I ran into the same issue migrating GA to a new phone, none of my keys went with. Very frustrating experience. I also swit

I second every part of this comment. I ran into the same issue migrating GA to a new phone, none of my keys went with. Very frustrating experience. I also switched to OTPAuth, great app, provides encrypted backups and switching to a new phone was seamless. Would absolutely recommend over Google Authenticator.