Google recently began rolling out a slightly updated look to the contact list on the Duo video calling app. Alongside this fun rearrangement of pixels, there was also a very real, very significant change made: You can now call people that haven’t installed or registered with Duo in the past. It works almost exactly like a normal Duo call, including the Knock-Knock feature.
As the video above shows, the Duo app is not installed on the phone, but an incoming call can instantly fly over the screen with a view of the caller’s camera.
Duo calls can now be made with some users that don’t have it installed, Allo chats also improved was written by the awesome team at Android Police.