Best communication app.whatsapp is the best platform where can do anything chatting, it's user can send messages, sons, video, sticker for making emotion, image and best thing is we can send pdf file also.
The best part of it's we can make hd call to our friends freely in future it's also declare it's will be comes with video call in future.
We can make group over adding 200 members for group chart. So finally we can foud a best platform after facebook. Many smartphone user are using whatsapp. It is available for ios, java, android and web also. Many people are happy with this. Overall one problems is frequently say to update day to day it also observed many data. I request for whatsapp to please produce a lite version please.