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How to use Phone Callback or SMS for Duo 2FA

Modified on: Mon, Jan 23 2023 2:49 PM

Using the Duo Mobile app with your smart phone is the recommended method for Two-Factor Authentication (2FA). If your phone isn't able to utilize the Duo Mobile app, you can still authenticate with your phone by using Phone Callback (landline/cell phone) or SMS Passcodes (cell phone only). Note, International numbers are NOT supported with these methods.


1.  Click "Other options" at the Duo Prompt.


2. If you have multiple phone numbers associated with your account, select the phone number you would like to receive the phone callback from and click "Call phone".

 


3. Your phone will receive an automated call. Follow the instructions given in the automated message to complete the authentication.