I have two mobile. One for normal using and one for google authenticator - this one is still offline and without internet. This is a godd queue from me, stay safe guys.
Good that you have overlook this one because this really a pain to a user using the 2fa google authenticator. As the phone using the 2fa gets lost you will also lost your account and will not be able to access it anymore. This is one disadvantage on using a 2FA authenticator once you losses your phone then you will also lose your account. But, there are good authenticator too and that is by using email address to which code will be sent through email address you link for the account.