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, and Nokia. You can chat between iPhone, BlackBerry, Android and Nokia. like BBM. You must have unlimited internet data plan to use WhatsApp.
Usage : add the friend's phone number to your phone's contact and WhatsApp will automatically detect.
Downloads :