As of March 1, 2023, the Two-factor authentication (2FA) setup using SMS/Voice Call will no longer be available. This change will not affect already existing 2FA setups.
If you need to set up 2FA in your account after March 1, 2023, you will be able to use only an authenticator app. The option to generate backup codes is not affected by this change. The SMS/Voice Call option is not available as a secondary option for 2FA either.
SMS/Voice Call can be easily intercepted and breached. Also, the SMS service provider may have outage, your own phone service may have problems, as well, and your phone may be out of signal. The authenticator app is free from all these potential risks.