Tue, 05/17/2011 – 05:55 byMobile ad network inMobi released new findings based on data gathered from its global mobile ad network. Among other things, the company reports the comparative market shares of mobile operating systems and handsets on its network. In addition inMobi said that in-app ads grew faster in April than mobile web advertising: “Commenting on the study, James Lamberti, VP Global Research & Marketing at InMobi, says: “Following the global smartphone revolution, ‘in-application’ advertising continues to outpace mobile web ad growth.” Below are inMobi’s market share charts, with the US market represented in the second chart. Nearly 10% growth in iPhone share in the US was driven by the introduction of the Verizon iPhone. Other data from IDC, comScore, Nielsen and others have confirmed a similar lift for the Apple handset. Here are comScore’s March smartphone data for comparison purposes: What’s the principal difference between the comScore data and inMobi’s numbers? ComScore’s data are derived from consumer surveys, while inMobi’s is based on ads and impressions served on actual handsets.