Law enforcement authorities have been warning about mobile phone theft, as it becomes increasingly violent and prevalent. In San Francisco, more than half of reported robberies in 2012 involves a mobile phone. One study estimated the cost of phone theft at about $30 billion.
"This nationwide coalition of leaders is committed to doing everything in our power to encourage industry to be good corporate citizens and take responsible steps to ensure the safety of our consumers," Schneiderman said in a statement.