Google Duo - how to make GROUP Video Call and how it is compared to Zoom and WhatsApp? Step 1: Install Duo Duo is available on Android phones and tablets. When you sign up, you'll get a verification code on your phone. Download and install Duo Step 2: Verify your phone number You can skip phone number verification. If you skip this step, you have to connect to your Google Account. On your Android device, enter your phone number and make sure it's correct. Tap Agree. Duo will send a code in a one-time SMS message to the number that you entered. (Carrier text-message rates may apply.) Enter the code that you received in the text message. If you don't receive a text message, tap Resend SMS. If you have a cell connection and aren't getting the SMS, request a call by tapping Call me. If you continue having problems verifying your phone number, visit the verification troubleshooting article . Step 3: Connect your Google Account To connect your Google Account, ta