I think like food and water, whatsapp also has become an important part of our life. I such a wonderful platform of communication that I used it on daily basis. I stay around 1700km away from my family but whatsapp video calling feature never make me realize there absence. whenever I want to talk to them like face to face, I just connect it to my wifi and I feel like I m sitting at home am talking to them. I can even share my location which I needed several times and even if I want to send some document, or images or viedo or anything which I want ot share I can simply do it using whatsaap. this application is fully loaded with so many feature that you can not resist your to not use this. its design and layout is so simple that everyone can feel comfort of using this app. I think its the best which ever made by great techie.