So far Google is doing good in most of its field of work, let it be software, app or mobile phone. But Google Duo isn't up to expectation as one would expect from Google.
Interface of the Duo app is so simple, I mean it's cliche. They could have done better with the interface of the app. Secondly, the connection problem which causes lagging in video chat is also a major problem. Thirdly, the quality of video is not so good that one would be pleased to have a video call over voice call. Overall, it needs improvement.