It's probably not a gigantic surprise that Apple has slipped past the RIM BlackBerry phones, but it's a benchmark that should be noted. There may even be a few toasts in Cupertino.
Comscore keeps an eye on mobile trends, and a report released today says Apple has increased market share from 24.7% to 26% from January until April of this year. Google (Android) rose 5% to 36.4%, while RIM has 25.7% of smartphone subscribers. Microsoft, even with the addition of its new Windows Phone 7 line, has dropped 1.3% to a 6.