COLUMBIA, Md., April 5, 2011 /PRNewswire/ -- The percentage of Americans age 12 and older who have a smartphone has more than doubled in the past year, from 14 percent to 31 percent of the population according to the new national survey from Arbitron Inc. (NYSE: ARB) and Edison Research, The Infinit
Source : http://www.prnewswire.com/news-releases/smartphone...
Source : http://www.prnewswire.com/news-releases/smartphone...