Reactivate Duo Mobile App on New Phone/After Phone Reset.
If you get a new phone or reset your phone, you will need to reactivate the Duo Mobile app. Follow the steps below.
Go to the Duo Enrollment Page and log in with your NetID and password.
On the Duo prompt page, click the Settings button and then My Settings & Devices.
Verify your identity. Since we’re reactivating Duo Mobile, Duo Push will not work. Instead, choose either Call Me or Enter a Passcode (which will send you a code via text message).
Click the Gear button next to the phone you are reactivating.
Click the Reactivate Duo Mobile button.
Select your phone’s operating system, then click Continue.
Install the Duo Mobile app on your device if you have not already done so, then click the I have Duo Mobile.
On your phone, open the Duo Mobile app. Click the “+” icon on the top of the screen. Hold your phone up to the computer and scan the on-screen barcode using the Duo Mobile application’s built-in scanner. After you have scanned the barcode, click Continue.