Source google image: http://www.nielsen.com/content/dam/corporate/us/en/newswire/uploads/2010/11/us-mobile-market-oct2010-1.png
Us android os market share
Source google image: http://www.nielsen.com/content/dam/corporate/us/en/newswire/uploads/2010/11/us-mobile-market-oct2010-1.png