comScore Reports September 2012 U.S. Mobile Subscriber Market Share Smartphone Penetration Surges Past 50% Threshold for the First TimeRESTON, VA, November 2, 2012– comScore, Inc. (NASDAQ: SCOR), a leader in measuring the digital world, today released data from the comScore MobiLens service, reporting key trends in the U.S. mobile phone industry during the three month [...]