Two-factor authentication is an essential security measure that uses your phone to help prevent unauthorized access to your account. It makes it harder to access your account if you lose your phone, but thats also sort of the point. There are many ways to prevent this problem from happening, so dont wait until youve lost your phone. Write down your one-time backup codes and keep them in a place where you can find them. If you use an authenticator app (we recommend Authy) you can likely swap your authenticator device via account settings.”]
Source: https://lifehacker.com/what-do-i-do-if-i-use-two-factor-authentication-and-los-1668727532