According to Comscore in the three month period ending in April 2011 74.6 million American’s owned smartphones which was up 13% from the previous three month period. Of those smartphones 36.4% of those devices ran on Android, while 26% were iOS devices. Research In Motion (RIM) came in third place moving down 30.4% to 25.7% this quarter. It’s also very worthy to note that Microsoft and their Windows Phone 7 platform moved down from 8.0% to 6.7% (it’s supposed to go the other direction when introducing a new OS)
HP/Palm who’ve apparently been on hiatus, just recently introduced a new device the HP Veer which was just made available two weeks ago. HP/Palm saw a decrease from 3.2%-2.6%
Clearly the only two operating systems that moved in the right direction were Android and iOS.
In regards to Android consistently outperforming Apple’s iOS, Business Insider offered this: At this point, we don’t see how Apple manages to slow down the Google juggernaut.