Facebook Messenger is one of the best and fastest messenger created by facebook company till now. This app is downloaded and intsalled by people all over the world. This facebook Messenger is available for both android & IOS user. So it makes easily available. updates are coming day by day. It is an messaging service and app which provide both text, voice and video communication . People recommened is as best communication app. This messenger easily work on 2G network also. Facebook reported that facebook messenger had reached to 1 billion monthly active user. so download it now.