If you get a new smartphone and wish to use the Duo Mobile app on it, you will need to replace your previous device. To replace a phone without adding a new phone number do the following:
On your smartphone go to the App Store and download the Duo Mobile app by Duo Security if you have not already.
In a web browser go to 2fa.gmu.edu. Click 2FA Account Login in the top right.
Log in with your Mason NetID and Patriot Pass Password.
Select Call Me and follow the prompts upon answering.
On the Patriot Pass Password Management homepage, click 2FA Account on the left side menu.
On the Manage Duo 2FA Account page, locate your phone on the list of devices.
Click Click to activate next to “New device but same number?”.
Select your phone type from the list (i.e. If you are enrolling a smartphone, select Smartphone). Then click CONTINUE.
Follow the steps on the screen to complete your phone activation. Your smartphone has been replaced.