Ye I get it 2 factor auth is supposed to be bound to a specific device. But no backup feature means you are seriously boned if anything happens. Get Authy or Auth Plus  anything but this. Or if rooted you could use Titanium (or manually backup the App settings) but why  just why? Which brings me to another point. On a rooted device this PoS is absolutely NOT secure. The settings are not encrypted at all  they basically assume your phone is secure which Google obviously knows isn't always true  not to mention that they have no control over that. Well done Google  wanna be secure when its inconvenient for the user but too lazy to encrypt what you are trying to protect.
August 22 2016