Overview

---

If you get a new phone to use with the same number you have previously used with Two-Step login, follow this reactivation process. The following steps can also be used if your Duo app no longer works. If your app asks for a new QR code or a re-activation link, the following steps will re-activate your Duo app. 

Critical Concepts

---

• If your new phone has a different number, use the device manager (https://duo-registration.ucsd.edu) to delete the old phone and use the Add another device process to register the new phone. This will only work if you have a back up device registered. 
  
  
• If your phone number has changed and you do not have a backup device registered, please call the Service Desk for assistance. 
  
  
• If you do not have access to your new phone to use the following steps, please call the Service Desk for further assistance. 

Steps to Take

---

1. Go to the two-step login device management page (https://duo-registration.ucsd.edu); log in with your Active Directory credentials.
2. Complete two-step login process by selecting the Call Me button. Since your upgraded phone has the same number, you should be able to perform two-step with call or text passcode.
   
   
   • Select the Device Options button. Make sure the number you see matches the number of your new phone.
     
     
3. Select the Reactivate Duo Mobile button.
4. Follow the prompts to reactivate the device; the prompts will be similar to the first time you registered.