This document provides an overview of the history and uses of mobile phones. It discusses the evolution of mobile phone technology from early models that weighed over 80 pounds to modern smartphones. It describes common mobile phone features like text messaging, SIM cards, and cameras. The document also examines the growth of the mobile market in India and provides statistics on market share of companies. A survey was conducted of college students about their mobile phone usage, bills, brands, and opinions on prolonged phone use.