You can register any call- or SMS-capable device for Multi-Factor Authentication (MFA), though we highly recommend using the Duo Mobile app for convenience. Please use a computer or separate device to register and have your authentication device handy to complete the registration process. A stable network connection (WiFi or data) is recommended.
To add or remove a device from your existing Duo account, please ensure that you have a registered device available. You will need to accept an authentication request to verify your identity to make changes to your account.
3. On your phone, tap the link to open Duo Mobile to reactivate the profile.