The document discusses trends in the mobile operating system market from 2009 to 2010 and provides a forecast for 2014. It notes that the market size grew from 172 million units in 2009 to 269 million units in 2010, a 55% increase. The key players are Symbian, Android, iOS, RIM and Windows, with Symbian decreasing in market share while Android and RIM increased in both units and market share during this period. The document forecasts continued growth in the market and changes in the shares held by each operating system manufacturer by 2014.