Mobile phones have surpassed PCs with over 2.4 billion sold globally last year. 350 billion text messages are exchanged monthly worldwide. Mobile reaches audiences that other media cannot. 10 million Indians use GPRS, enabling applications. Leveraging the web and integrating services is the future of mobile. Marketers must unlearn just-in-case approaches and learn just-in-time contextual and personalized messaging moving from communication to conversation. Mobile offers interactivity like initiating calls, downloading content, and interacting with promotions.