WATCH: Mobile phone emits smoke, leaves man injured in West Bengal

First battery-free cell phone that runs on ambient light developed

Cell phone use might lead to feeling less socially connected

You are a genius if you can spot a cell phone in this photo - Take the challenge

No mobile coverage in about 55,669 villages so far: Prasad

Half of Americans can't go a day without cell phone: survey

Pakistan blocks Afghan cell phone roaming facility