Guide for Google Duo is will help you to get started with Googles latest video calling application, it's not based on your Google account or your email, it's tied to your phone number, making it easier for you to chat with the contacts that are already in your phone. Duo is the simplest app which will help you to get connected with your friends. This F.A.Q. Guide will help you to find out How to install the app. How to set up. How to make a video call in Google Duo. How to receive call. How to use settings. And much more! Easy step by step tutorials which are featured with images.