This document provides an introduction to mobile technology and discusses trends in mobile devices from 2011-2012. It outlines reasons for developing mobile apps, including the large number of mobile users and the ability to provide better experiences than mobile websites. It describes the growth of tablets in 2010 and predicts expanded photo and video sharing as bandwidth improves. HTML5 is predicted to drive an explosion of mobile web apps. Flash is not expected to gain widespread adoption on mobile. The document also discusses how mobile will transform commerce and provides facts about popular mobile platforms and apps.