Here's another one of those surprising and paradoxical Android vs. iPhone reports: according to January comScore data Android's US smartphone share was 52.3% to the iPhone's 34.3%. However Safari's mobile browser share of US web traffic is now 62%.
This represents the combined smartphone and tablet market share for iOS, according to Net Applications. By comparison the Android browser had roughly 22%. Chrome (which may be on iOS as well) had about 2.5%.
By comparison, according to StatCounter, the iPhone and iPod Touch combine for roughly 52% US mobile browser market share. Android has 37%. The iPad is not included in these data however. So it appears the two sources are generally in alignment.
Despite Android's continuing market share gains and lead its users are much less active on the mobile internet than iPhone users. This is probably because the Android user base is more economically and demographically diverse than iOS users.
On a related note, Google changed the way it calculates Android version share on its developer website. It has moved from total activations to Google Play visits to reflect more active and engaged users.