InMobi: Android Passes iPhone, Nokia Falling

Ad network InMobi released its latest Mobile Insights Report: Global Edition March 2011. Based on 31.9 billion monthly impressions generated by 220 million consumers, the latest report shows phones running the Android OS overtaking Apple's iPhone. This is consistent with most other data in the market.

The report continues to show Nokia as the global smartphone leader but, like other sources, indicates a decline in its overall share. Strikingly, InMobi says "Nokia lost -3.9 share points in just 90 days, while Samsung (+1.6 share pts), Apple (+1.9 share pts) and HTC (+2.8 share pts) gained share." 

Another striking data point: "35% of all mobile ad impressions now occur on smartphones."

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In North America, as with the Millennial data just released this morning, the Verizon iPhone has helped Apple but that has not been enought to slow Android's momentum. But for quarter, according to InMobi, Apple's growth outpaced Android's in North America. RIM also grew. 

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Globally Android, iOS and RIM grew while others declined according to the report. Below, compare the most recent IDC numbers (global estimates for year-end 2011) and those from comScore (US) representing the most recent quarter. 
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The IDC numbers for Android above are quite aggressive vs. what InMobi show. IDC's numbers are projections based on existing sales and additional assumptions about future consumer purchase behavior. ComScore's data are based on consumer surveys.