Lost cellphones added up fast in 2011

Mobile security firm Lookout Labs estimates Americans lost about $30 billion worth of mobile phones last year. The company based its findings on data from 15 million users who downloaded its app that locates lost devices. The study points out that four of the 10 cities with the highest rates of lost and stolen phones — Cleveland, Detroit, Oakland and Newark — also were among the 10 cities with the highest crime rates.