Duo is a video chat mobile app developed by Google, available on both Android and iOS. Google Duo will replace Hangouts for video calling within the suite of Googles apps.
Features:
- HD 720p video
- Optimized for low bandwidth mobile networks. The app optimizes WebRTC and uses QUIC over UDP. Optimisation is further achieved through the degradation of video quality through monitoring network quality.
- “Knock Knock” – an Android-only feature which shows a live preview of the caller before the recipient picks up, which Google says is to “make calls feel more like an invitation rather than an interruption”
- End-to-end encryption by default,
- Google Assistant support,
- Use of phone numbers to allow users to easily call people from their contact list,
- Automatic switching between WiFi and mobile data.
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