If there are certain people you chat to more often, it might be a good idea to create a shortcut for them directly on your homescreen so you don’t have to keep opening and closing WhatsApp.
How: Tap and hold on the chat (group or individual) of your choice and a tab will pop up. Select the Add Conversation Shortcut option and the chat in question will appear as the person's profile photo on your mobile desktop. Unfortunately this only applies for Android users and not iPhone ones. Sorry guys.
Read more at http://www.stuff.tv/features/11-secret-whatsapp-tricks-you-probably-didnt-know-about/5-back-it#MLWrRqSCFBy92ruM.99
