Yes, I was shocked by this too moving phones many years ago. I’m surprised things haven’t improved. I switched to 1Password for this reason; it backs up the 2FA

Yes, I was shocked by this too moving phones many years ago. I’m surprised things haven’t improved. I switched to 1Password for this reason; it backs up the 2FA seeds, and I only use it for storing the 2FA seeds, and when I need to use it, I copy-paste the numbers, and I don’t use it for passwords, retaining most of the 2FA factor separation. Switching phones worked (after entering my login, pw, and long master key in the new 1P install). (My passwords are copy pasted from somewhere else, so admittedly not 2 different factors, but at least 2 independent ones.) So in short, even though I probably use 1% of the 1P functionality, I can recommend 1P for replacing GA.