Whats app is social app. It is used for chatting with our known ones. It’s a good source of getting touch with our relatives and friends. I have been using whatsapp and have used the app in iOS, android, and Symbian phones and very familiar with it. I use whatsapp for sending messages and receiving it. Whatsapp enables you to share photos and videos with ease and just now it has included sharing of documents too. this app is easy to use and it is free mostof the world is using for chatting .hence you should download the app .