Whatsapp is best messenger. Its easy to use and its simplicity of this app make is most useful.and with every new update you get more feature.but recent update was not good. You can send mssg to your friends , make voice calls and video calls also but video call quality not so good. You can share media upto 16mb.you can know when your message deliverd and when your message was read its so amazing feature I love this app its best messenger app.