So if you use GA it is worth taking at least one of these two precautions:
-You should always note the key when registering an 2FA account. Few people realize, but there is always a sequence of numbers below the QR code (or somewhere else on the website) when you register that account on your GA.
- Register the account on another device, such as a tablet.
It is a great advice, I have a colleague who had problems with his Google Authenticator and he was unable to recover his account. It is terrible to discover that you can have trouble like this one.