I using this app because of its functions. Its very useful for working professions. We can chat in groups, we can talk with friend by calling. chatting and calling is totally free. whatsApp saves 100-150 Rs. for every month. we just have to activate our net pack. In whatsapp there is an so many stickers. so you can express your feelings too. you can download this app from Googleplay. Its very useful if you want to growth in life otherwise don’t use for time pass.