The video and audio quality sent and recieved, are poor! Upgrade it to send the full quality. This app is data thirsty on background run. In the app there are lags. The notifications of messages doesn't come through until 0-5 hours after it was sent to me. Calling always wants to reconnect lately, which it never have before, and my signal and data network are fast... even the other people also have fast network coverage. Fix your bugs please, since this app have been run by facebook it is bad.