Facebook building WhatsApp shortcut button in their application for android and IOS both. Facebook and Whatsapp both applications are very popular in the world now. As we know some time ago whatsapp is purchased by facebook company.
The recent WhatsApp dedicated button was spotted on Android version of the app, but it is likely to be seen on iOS platform as well. The dedicated button, discovered by a Facebook user named Arvind Iyer, appears as an option at top right in the menu area. It allows users open WhatsApp without the need to leave the Facebook app.