Whatsapp is amazing application for communication. It is not only for android, it is installed on any type of mobile, laptop. It is small size and compact, it is updated time to time for better service. Its layout is green which is awesome and it is simple in use. It works on contact numbers which is saved on device. It has feature for video calling and voice calling. It provide facility to share pdf, photo, video and much more. In latest update the video which is on download can watch simultaneously at a time. It does not take time to send message and it consumes less data. I also use this application and make fun by making groups.