At first I said to my all mouthshut freinds that WhatsApp is a very popular app.Althiugh everyone know it.WhatsApp is a social network where you can share your times and moment and feelings with your freinds.And you can here post your photos and letters etc.Chatting, Masseging, calling.It is a very usefull app as facebook.I like this app concept desgines and features.If you want to download this app so you follow my instrucktion.First you goto google and type play store and after enter play store you type in the search bar WhatsApp.Then you find the WhatsApp app.
ThankYou.