Hello friends, nowadays all the smartphone usersare using it. I am also using the whatsapp since I am using the smartphone. The concept of whatsapp is is very nice and it is very easy. It is always updating and new things are always comming in it. The layout and design of the app is very good and it is very userfriendly. Any new user can also use it without any problem. There are many features and functions in this app and it is very useful and there are many useful groups which we can join it. We can also call anyone through whatsapp and it is very good. It use whatsapp everyday and everytime because it is very useful for me.