Android (operating system) million devices had been activated with 1.3 million activations per day. In May 2013, at Google I/O, Sundar Pichai announced that 900 million Android devices had been activated. Android market share varies by location. In July 2012, "mobile subscribers aged 13+" in the United States using Android were up to 52%, and rose to 90% in China. During the third quarter of 2012, Android's worldwide smartphone shipment market share was 75%, with 750 million devices activated in total. In April 2013 Android had 1.5 million activations per day. , 48 billion applications ("apps") have been installed from the Google Play
Windows Mobile Windows Mobile's share of the smartphone market grew from its inception while new devices were being released. After peaking in 2007, it saw decline year-on-year. In Q1 2003, Windows Mobile was the third largest operating system in the smart handheld market, behind Symbian and Palm OS. In Q1 2004, Windows Mobile accounted for 23% of worldwide smartphone sales. Windows Mobile was projected in 2005 to overtake Symbian to become the leading mobile OS by 2010. In Q3 2004, Windows Mobile (CE) surpassed Palm OS to become the largest PDA operating system. In Q4 2005 Microsoft shipped 2.2 million PDAs, which