How to Add a Second Phone to Your Duo Account

  1. Go to an online service that requires Duo login (e.g., Online Toolkit).
  2. Enter your NetID and password, and click Logon.
  3. You will automatically receive a prompt (e.g., call or push) to your default device. Click Other Options.
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  4. You will be asked to verify that it’s really you by performing an existing Duo login.

    NOTE: If you no longer have a device to authenticate, please contact ITAC via phone or LiveChat to remove the old device and enroll a new one.
     
  5. Click Manage devices.
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  6. You will be asked to confirm that it’s really you by performing an existing Duo login. Using a device you already have enrolled, click on an option to complete the Duo login.

    NOTE: For this example, we selected Duo Push.
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  7. Click Approve on your mobile device.
    This screen will appear
  8. Click Yes, trust browser. 

    CAUTION: Only trust the browser if this security choice makes sense for the device you are on. If you are using a public and/or shared computer, do not trust the browser.

    NOTE: This will remember your device for 14 days.
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  9. Once verified, you'll be taken to the devices page.
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  10. Click Add a Device.
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  11. Click the Phone Number option.
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  12. Type in your phone number.
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  13. NOTE: If this is a landline, click the This is a landline phone check box.
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  14. Click Add phone number.

    NOTE: If this is a landline, you have the option to add an extension. If not, click skip this step.
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  15. Verify the number is correct, then click Yes, it's correct.
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  16. Your phone has been added. Click Continue.
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  17. Your added phone number will be displayed on your home screen.
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  18. The new phone will now be visible on your Duo account. If you do not wish to make this new phone number your default authentication method, you can stop here.
     
  19. In order to make this new phone your default device, click Other Options the next time you need to authenticate using Duo.
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  20. Select the new phone number and method you would like to use for authentication. This will become your new authentication by default.
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  21. NOTE: For this example, we selected Duo Push.

    You have successfully added a second phone and authentication method to default to on your Duo account.