Google launched the Duo, and All at the same time last year.
Of the two is the videosamtalsappen Duo and not the messaging service, which Google believes is most important.
the Duo is standardapp in Android while the Allo is not.
Now, Google has also integrated Duo deeper in Android on Nexus-, Pixel - and Android One devices.
Users can launch video calls directly from the telefonappen, contacts, and Android Messages.
Google says that they also will do so to a voice call, to be seamlessly transformed into a video call with a push of a button.