I don't think anyone is here who don't know about WhatsApp. WhatsApp is like a Magic App anyone who gets to know about it and download this app and started using it. They get addictive of this app. Anyone who is using smartphone, they have whatsapp in the phones too. Not only one whatsapp, they are using two-two whatsapps at the same time in only one phone. That's how much famous is whatsapp in india and all other countries. By downloading Whatsapp, you get to text for free with other users of the app, regardless of platform. Neat customization tools and group chat features e.t.c With this app you will also save money and maximun internet data on text charges through your phone and across platforms. All in all Whatsapp is best Massaging App to use.
