This application available all platform(example:- android, ios, windows etc) 300 million people using this app inferential.actually this app is awesome social networking app.This app use very easy to sent for text, photo, video, audio, documents and GIP file.it use smoothly 2g.it uses the internet to make voice call and video call.this app is the new features end-to-end option that means always secure app.i hope all people use this interesting application.