In this article, we'll explain how to move all of your Google Authenticator accounts from one phone to another.
How to Transfer Google Authenticator to a New Phone
There are two easy ways to do this, and you don't have to re-add all of your accounts.
Google lets you back up your Authenticator codes to your Google Account, making it incredibly easy to move all of your codes over to your new phone. The only catch is that you have to enable this backup option. Follow these steps to get your Google Authenticator codes on your new phone as quickly as possible:
Open Google Authenticator on your old phone and tap your profile icon at the top.