Duo First-Time Device Enrollment
Use the following instructions if you are setting up Duo two-factor authentication for the first time on any device. If you already have Duo installed and wish to change the setup on your device, see the Device Management
First-time installation on a smartphone
First-time installation on a tablet
First-time installation on a landline
Note: This option can be used on a mobile phone (smartphone or basic). Using this option on a smartphone does not require you to install the Duo Mobile app on your smartphone.