InMobi's report - detailing ad impressions across the course of 2011 for feature and smartphones - names Apple's iPhone 4 as the top handset in Q4, accounting for 5.9 percent of all ads served, with iPad 1, iPhone 4S and 4th gen iPod touch taking the next three slots respectively.
The BlackBerry 8520 was fifth.
Edging out Apple
Yet, despite Apple grabbing a 16.7 percent share of mobile impressions in Q4, iOS devices account for less than half of Nokia's global total, with the Finnish firm coming in on a market leading 35 percent share. ;
Samsung had a 19.3 percent share, while Android devices accounted for 21.1 percent of ads on an OS basis.
Throughout 2011, InMobi claimed impressions on smartphones had jumped 488 percent year-on-year to 108.9 billion.
That's a total still outclassed by impressions on feature phones, however, which account for 54 percent of all on InMobi's network.
That market grew by 251 percent.
Where it counts
Naturally, in developed markets such as the US and Europe, smartphones rule the roost, accounting for an 83 percent share of ad impressions in both regions.
InMobi claims Apple is the dominant player in both territories, with a 33.1 percent share of the market throughout 2011 in the US, and a slightly smaller share of 27.6 percent across Europe.
Figures for other regions aren't given, but figures suggest Nokia's lead must be garnered from developing markets, where both Symbian and Nokia OS handsets traditionally draw their strength.
[source: InMobi]
