Fb messenger is best . It is an latest app which is very useful to connect with people and know their feelings. it helps connecting people through out the world. it is very useful and simple to use for chatting purpose, sharing photos, videos and video chatting purpose. so everyone try this app it is very cool app.according to my view it is cool we can easily contact to people without knowing their contact details also.it is supported to all types of phones available in play stores and in google playservises. try this app