A Cambodian gambler talks on 18 cellphones at once at a boxing match in Phnom Penh in 2010. There are nearly 132 cellphones for every 100 Cambodians, but the country has also seen a surge in the number of landlines. Tang Chhin Sothy/AFP/Getty Images hide caption

itoggle caption Tang Chhin Sothy/AFP/Getty Images

An expert FAA advisory committee has recommended that airline passengers be allowed to use most personal electronic devices below 10,000 feet. Leonardo Patrizi/iStockphoto.com hide caption

itoggle caption Leonardo Patrizi/iStockphoto.com

Residents of the East Village in New York City look for cellphone reception Nov. 1 after Hurricane Sandy wiped out power and some cell towers. Timothy A. Clary/AFP/Getty Images hide caption

itoggle caption Timothy A. Clary/AFP/Getty Images