Enroll a Smartphone

Click here for instructions on how to activate DUO if you have a new device with the same phone number as your old device.

Before Enrolling Your Smartphone

  • Have your charged smartphone with you.
  • Have access to a desktop or laptop computer with an internet connection.
  • icon-computer The enrollment process starts from your laptop or desktop computer.
  • icon-tablet A few steps in, you will switch to using your smartphone to scan a QR code.
  • You can enroll more than one device in the enrollment session.

1. icon-computer Add a Device

CAM menu

  • Click Start setup or in the Device Control Panel (this screen will not appear if you already have a device set up)
  • Choose an Authentication Method to complete a 2-Step to access the Device Control Panel
  • Select Add Another Device, which appears as a small link below your current list of devices.

  • Select Mobile Phone and click Continue.

What type of device are you adding? Device Control Panel

  • Enter your phone number, including area code. Example: (555) 555-5555.
  • Be sure to click the checkbox next to This is the correct number when it appears. Click Continue.

Enter your phone number

  • If prompted, verify ownership of your phone by clicking the button to receive a text message

verif screen2

  • If prompted, choose what type of phone you are usingiPhone (Apple IOS), Android (Samsung, Google, LG, Sony, etc.), Windows, and Other (includes cell phones). 

What type of phone

2. icon-smartphone Download and Activate Duo Mobile

At this time, you will use your smartphone to download the Duo Mobile app. To locate the app, follow the links on the Duo website or, depending on your type of phone, go to the Apple Store, Google Play Store or Windows Store.

  • Search for the free “Duo Mobile” app and download it.

Duo Mobile download this app

  • Open the Duo Mobile app. For “Duo Mobile” Would Like to Send You Notifications, click Allow so that Duo Mobile can send you push notifications (account access approval requests).
  • Click Add Account. Click OK to let Duo Mobile access your camera, which will be used for scanning the barcode.
  • If you have previously registered a device with Duo Mobile, you will not see the Add Account button. Instead, press the plus sign in the upper right corner of your screen.

Add Duo Mobile

3. icon-computer icon-smartphoneLink Your Smartphone to Your Account

For these next steps, you will need to switch between your computer and your smartphone to scan the barcode that links your smartphone to your CalNet ID account.

  • On your computer, click I Have Duo Mobile Installed.

Activate Duo

  • Point your smartphone’s camera at the QR barcode on your computer screen to scan the barcode. (What is a QR barcode? It’s that square with all the squiggles.)


  • Once you have successfully scanned the QR barcode, a green check mark will pop up on the QR code to confirm that your smartphone device is linked to your account. Click Continue.

Activate Duo

  • You may be prompted to name your account after pressing the green Continue button. We suggest leaving it as CalNet UC Berkeley, or choosing a name that is obvious to you.

Enrollment Completed!

Congratulations! You’ve successfully enrolled your smartphone. Now when you log in to campus systems with your CalNet ID, you will be prompted for a second-step verification. Click Send me a Push and go to the Duo Mobile app on your phone to approve. (See How to Do the CalNet 2-Step for more information.)

Be sure to get your backup passcodes! Click here to find out how.