When I am talking to my cousin that is a truck driver and we us Google duo I have feedback. It sounds like an echo even though we are thousands of miles away from each other. Currently I am in NC and she is in NV. We both have Samsung devices and when we use the feature to talk on video through the feature that is like FaceTime in the iPhone we do not get the feedback Currently Samsung does not have a share screen feature so we have toggle between duo and our Samsung video feature.