Chart: Worldwide Smartphone Market, OS Share, 2012 Q4Description: IDC’s Worldwide Quarterly Mobile Phone Tracker provides smart phone and feature phone market data in 54 countries by vendor, device type, air interface, operating systems and platforms, and generation. Over 20 additional technical segmentations are provided. The data is provided four times a year and includes historical and forecast trend analysis. For more information, or to subscribe to the research, please contact Kathy Nagamine at 1-650-350-6423 or knagamine@idc.com.Further detail about this tracker can be found at:http://www.idc.com/tracker/showproductinfo.jsp?prod_id=37Tags: smartphone, iOS, Apple, Android, Samsung, Blackberry, Windows Phone, Microsoft, Symbian, iPhone, Galaxy, Nexus, Mobile, operating system, mobilityAuthor: IDCcharts powered by iCharts