WhatsApp Messenger is a cross-platform mobile messaging app which allows you to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, BlackBerry, Android, Windows Phone and Nokia and yes, those phones can all message each other! Because WhatsApp Messenger uses the same internet data plan that you use for email and web browsing, there is no cost to message and stay in touch with your friends.In addition to basic messaging WhatsApp users can create groups, send each other unlimited images, video and audio media messages.
Recently WhatsApp update was released for iOS phones in which you were able to "Star" the messages.
So Whats this "Stared" messages?
Star Messages are viewed in a separate section which means sometimes you may keep a long conversation with your friends or family and you may not able to keep track of message which is required. So when you star the Messages required it may be easy for faster access when required.
To star messages just press and hold on to the messages and click on "Star" symbol in header beside "Info" icon and you are done !!