Sarah Perez, TechCrunch:

But perhaps most importantly is the fact that some number of Android owners aren’t downloading mobile applications at all. Google tacitly acknowledged this fact earlier this month, when it made a change to the way it measures Android version adoption on its Developers site. The company explained that, going forward, it would only show data reflecting those devices that had visited the Google Play Store.

And that’s the problem in a nutshell. A lot more people are buying Android phones, but they’re using them very differently than iPhone users. They’re less engaged than iPhone users are with the supporting ecosystem – and, in fact, many of them don’t care about downloading apps and thus supporting the very developers Google is trying to attract to the Android platform.