If you use Google Authenticator to log in to sites using 2FA, you'll need to transfer your Authenticator keys when you get a new phone.
But what if you've reset your phone to factory settings or switched to a new phone without transferring Authenticator first?
If you still have access to your old Authenticator (or printed or screen-captured your QR code), it'll be easy to recover your accounts.
If not, your only option is to create new Authenticator keys for each site and service. This wikiHow article will show you how to recover Google Authenticator onto a new phone or tablet.
If you can't fix it by yourself or don't know what to do, just take it easy and contact our customer service for help.