What has to be a disappointment to Android users, only 25.8% of them are using a phone powered by Android 4.0.3-4.0.4. That seems low for the OS build that has now been surpassed by Android 4.1 and the just announced Android 4.2. When you consider that 12% are still toting a phone running Android 2.2, you have to wonder if there is something to this fragmentation thing after all. In comparison, 15% of iOS users had installed iOS 6 just 24 hours after it was available, and that figure rose to 60% after one month.
Who is to blame? The manufacturers have been seemingly slow to update phones and even the Android flagship phone, the Samsung Galaxy S III, is fragmented itself with owners of the Sprint version receiving the Android 4.1 update while the device continues to run Android 4.0 on the other U.S. carriers.
source: AndroidDevelopers via AndroidCentral