Mobile Application To Send Unlimited Free SMS
Here comes a mobile application which allows you to exchange messages with your friends and contacts without having to pay for SMS. Yes, it is WhatsApp Messenger. It is available for iPhone, BlackBerry, Android and Nokia (beta). In addition to messaging, iPhone, Android and BlackBerry WhatsApp Messenger users can send each other unlimited images, video and audio media messages.
* WhatsApp only works among users who have the application
* WhatsApp Messenger is cross platform; BlackBerry, Android, Nokia and iPhone contacts can message each other
Unlimited internet data plan with any of above phones!
( Note: This application is free for the first year and you have to pay for it after trial period)