Google is going to want something that’s been set up, signed in, or configured before this situation arises. Enter one of your pre-saved 8-digit backup codes.Get a verification code sent to a mobile phone.Get a verification code sent to a recovery email address.Get a code from the Google Authenticator app.Get a security code on a signed-in phone or tablet (even if it’s offline).Confirm on a signed-in phone or tablet.Use a one-time security code provided by another signed-in device.Use a hardware security key that you set up as part of two-factor authentication.
