[Wilya]

The article points to http://onefps.net/post/6496478249/50-percent-of-iphone-owner... which tells a somewhat different story.

One article sources "A little bird" and the other its own customer base. I wouldn't take neither as a definitive answer..

[rimantas]

There is one more: http://www.marco.org/2011/03/24/ios-device-and-os-version-st...