Once 2-step verification is turned off in your account, you can sign in to your new device without being prompted for verification. Method 2: Get a Verification Code on Your Phone Number ...

Some apps and services offer alternatives to verification texts. For example, you may be able to get a code sent via email instead. Also, some apps support receiving verification codes.

Once a code is used, it cannot be used again. Even if a hacker has your username and password, they cannot access your account without the ability to get an associated 2FA code.