Can’t speak to eSIM problems, but I’ve moved as much to synced passkeys as possible, and the last of my 2FA/MFA in Bitwarden will be migrated as those sites support passkeys.
As long as the data on my device is synced to iCloud storage or backups, that meets my needs. If the UX around an app is not great when switching phones or requires some esoteric incantations, I just won’t use it.
> As long as the data on my device is synced to iCloud storage
But is it though? That’s the major catch. Something as important as Google Authenticator is not backed up, so you must enable sync to your account to ensure you don’t lose it (which wasn’t a thing at all until recently)
I don’t use nor recommend Google Authenticator. If you want a secure 2FA/MFA, use a hardware token or a passkey. TOTPs without a backup or sync is pain waiting to happen.
Of course, syncing TOTPs comes with its own threat model. Something to keep in mind.
As long as the data on my device is synced to iCloud storage or backups, that meets my needs. If the UX around an app is not great when switching phones or requires some esoteric incantations, I just won’t use it.