Apple’s AAPL iPhone OS dominates the North American, Australian and Western European markets.
Nokia’s NOK Symbian is the most popular operating system in Africa and Asia, and continues to have a significant market share in Eastern Europe and Latin America.
However the numbers, as AdMob measures them, are trending in Apple’s favor. Apple’s share of requests in the AdMob network increased from 9% in Q4 2008 to 36% in Q4 2009 while Nokia’s share declined from 33% in Q4 2008 to 18% in Q4 2009.
(Google’s Android is also on the rise, climbing from 1% of smartphone traffic in Q4 2008 to 16% in Q4 2009.)
Below the fold: The world of smartphones, according to AdMob.