Google Duo is a simple and easy-to-use video calling application that can be used as the closest alternative to FaceTime on Android, iOS and the web. This guide will help you master Google Duo, from installing the app to creating an account, and how to make calls, video calls, group calls, send notes and messages, and use advanced calling features and settings. Disclaimer: Google and its registered trademarks or trademarks of Google Inc. in the United States and/or other countries. We have no affiliation with Google Inc. The images, pictures, videos, flashes, articles, etc. posted in this application are for educational and research purposes only.