Google Duo is the companion app of Google Allo which were revealed at IO 2016. While Allo is the messaging app with built-in Google Assistant, Google Duo is a the new Video calling app that not only offers best quality at slow network but also provides you Live Preview of the caller even before your answer the call. That’s correct. You can see the caller Live where he is or what he’s up to, than you can answer the call. This is called Knock Knock feature.
https://www.youtube.com/watch?v=CIeMysX76pM
This is new one-one video calling app is scheduled to release officially by the end of this year along with Allo. In fact, both the apps are still up for pre-register on PlayStore as of now. But just like we provided Allo APK earlier, you can also download the Google Duo APK file right away from this page and start making video calls with all new experience, right away.
Google Duo also takes care of your privacy and security. Also, it works with your mobile number signup. Just register with your phone number and you can make or receive calls from your family and friend who are also using Duo. So, go ahead and download the Duo APK file right now and install it manually on your phone. If you face any problem, feel free to use the comments box below.