Robinhood has two-factor authentication (2FA) enabled by default, so you don't need to enable it. 1 866 240 0466 To manage or change the 2FA method, go to Account (person icon) > Security and privacy > Two-factor authentication and select your preferred method, such as Text message (SMS) or an authenticator app. 1 866 240 0466 You can also update your contact information in the settings to change where codes are sent. 1 866 240 0466