Mobile: The State of the Art
http://www.boxesandarrows.com/archives/mobile_the_state_of_the_art.php

Smith, Shawn
Boxes and Arrows
2002

Abstract:

The world of mobile phones is a jungle of technologies with few established standards that, in some ways, resembles the early days of personal computing. Here the author presents an impressionistic landscape of this world, a glimpse of the near future, and thoughts on what it might mean for IAs.