This document provides instructions for adding devices, after an initial device has been enrolled, in Duo for two-factor authentication (2FA).
Updating Devices and Options
This document provides instructions for changing your Duo options for two-factor authentication (2FA). This includes: reactivate Duo Mobile when you get a new phone with the same number, delete a phone number or device if it’s lost, stolen, or no longer needed, and switch your default device.