How do I change my two-factor authentication (2FA) preference from Authy to SMS on Newton? February 27, 2021 03:32 Updated Download the Authy app on iPhone or Android. Login to your Newton account. Navigate to the menu and navigate to 2FA method. Select SMS on the slider. The next time you login into your Newton account, your 2FA method will be SMS. Related articles How do I change my two-factor authentication (2FA) preference from SMS to Authy on Newton? What happens to my Newton account in the case of death? What are SIM swap attacks and why should I use Authy for two-factor authentication (2FA) on Newton? What is a proof of address and an ID verification? Once I am referred to Newton, can I start to refer others?