When you get a new smartphone with the same phone number, you will need to reactivate the device from the Duo Control Panel in order to use it for 2-Step.
If you have backup passcodes:
Go to mycalnet.berkeley.eduand use a passcode for the second step.
If you don't have backup passcodes:
Go to mycalnet.berkeley.edu and at the Duo login, click on "Enter Passcode." Then tell Duo to text you new passcodes to use. Use a passcode to complete the second step.
When you are logged in,
- Select Manage 2-Step.
- At the Device Control Panel, select Enter Passcode and use another passcode to authenticate with Duo one more time. You'll be taken to My Settings and Devices.
- From there, click on Device Options next to the device on which you need to reactivate Duo.
- Click on Reactivate Duo Mobile to display a QR code.
- Open Duo Mobile on your phone, click Get Working, and then scan the QR code.
Note: If you have set up a secondary device, you may use that to authenticate. If you don’t have backup passcodes or a secondary device, please contact calnet2-stephelp@berkeley.edu to get help.