Google Duo APK code hints at a 'pause' button and a referral program with rewards
2

Google Duo is the Alphabet subsidiary's app for initiating and receiving video chats for both Android and iOS users. According to a report published today, a teardown of the Duo APK reveals some interesting code hinting at possible new features that could be coming to the app in the near future. For example, some strings of code discovered seemingly points to a way for Duo users to 'pause' a live video chat.
Keep in mind that these new capabilities are probably not part of the Duo update rolling out today, and they may never actually become part of Google Duo. But the discovery of the code does tell us some of the things Google has been working on for its cross-platform Video chat app.
If you haven't installed Duo on your Android or iOS handset, you can do so by clicking on the appropriate link: (iOS|Android).
source: AndroidPolice
Things that are NOT allowed: