Not only are we getting a new messaging app this Summer called Allo, but Google has also announced a new app for video calling.
This app is called Duos and it will come with a "knock" feature that will let you find out if someone is available for a video call without having to call them first.
This app is called Duos and it will come with a "knock" feature that will let you find out if someone is available for a video call without having to call them first.
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