Written by two leading researchers in the field, this volume presents an overview of the mobile telephone as a social and cultural phenomenon. Research is summarized and made accessible though detailed descriptions of ten mobile users from around the world. These illustrate popular debates, as well as deeper social forces at work. The book concludes by considering three themes: 1) the tighter interlacing of daily activities 2) a revolution of control in the social sphere, and 3) the arrival of a world where the majority of its inhabitants are reachable, anytime, anywhere.