Everyone use smartphone. I too have it. I have downloaded many applications. Whats app is one of the most famous and useful application, and also mostly users are using whats app.
I have downloaded whats app, actually I have bought smart phone just for whats app application only.
If you have net, you can send any message, video, audio in just few seconds through whats app. You can create group in whats app. Till now it is free. many good feature time by time update in whats app. Recently, call feature enable, so now we can call through whats app only and yes its successful, less costly.
Easy to download. Very much easy that any other social application.
Must try!