This document provides a history of mobile computing from portable computers in the 1980s to smartphones and ebooks today. It outlines the evolution of key devices over time, from early portables like the Osborne 1 and Kaypro II to modern smartphones and tablets. It also discusses how mobile phone technology evolved to enable internet access and apps via SMS and smartphones. Finally, it briefly mentions some early mobile messengers and apps like LibraryThing Mobile and eBuddyLite.