WhatsApp Messenger is an instant messaging mobile application that can be used on Andriod and other smartphones, without having to pay for it, just join it and use it for free. To use WhatsApp Messenger, you need your phone or tablet to be connected to a wireless or mobile network (4G/3G/2G) and once you are connected, you can start messaging and chatting with family and friends. You don't have to pay for each message or call, as it's all free on WhatsApp. (Note that you cannot use WhatsApp to call the emergency services, as it is only a social chat tool) There are no geographical restrictions on using WhatsApp Messenger, so you can use it to send and receive messages wherever you are, as long as you have an internet connection. Or if you want to chat online with a friend abroad, all you need is an internet connection and you're ready to chat. There's no extra charge for sending messages abroad via WhatsApp. Talk to your friends all over the world and don't pay for international text messages! With WhatsApp Messenger, you can choose to add contacts to your address book, so you don't have to spend time adding them one by one. And, you'll be online for long periods of time, so you'll always receive the latest messages as long as your device is switched on. You can of course log out when you don't want to be online, in time so that messages you receive while offline will be received when you are logged in, so you won't miss a single message. WhatsApp Messenger has many more features, such as sending and receiving files, sharing locations, setting custom wallpapers and much more, waiting for you!