We all know about WhatsApp, the most popular instant messaging app for Android, iOS, and Windows phones. WhatsApp was a pretty simple app at first but, when Facebook bought it, they have integrated all the possible features that a chatting app need. First, they implemented WhatsApp call and then they have introduced Video Calling and GIF support. Almost every week we get a new update on WhatsApp. Developers are working so hard to give the app more stability and fix all the possible bugs.