Whatsapp is an popular messaging application. If you know one that this app came 6 years back. At starting this app was a simple app. When it became popular Facebook graph fall down. So this way whatsapp became popular. You know one billion members are using this app(FEB 2016). Mark Zuckerberg, when he known about this app popularity then acquired this app in Feb 2014 approximately US$19.3 billion.
When come to know this app it has
1) Sending PDF files
2) Free calling and voice clarity when compare with Hike messenger
3) Sending locations, Messages
4) Sharing videos, Audios, Pictures.
5) It has privacy option also which keep you safe.
You know whatsapp web also came to existence if you want to know you can check here
=> https://youtube.com/watch?v=cdEyOQofy1Q
This site is for when you are working on a pc you cant handle both phone and pc
for this they have designed this whatsapp web while working also you can stay touch your friends and family members online.
One drawback of this app is it occupies with more internal memory. If this app occupies less memory then in all mobiles we can see this app.
Thankyou!