Are you curious to what percentage of Android mobile phones and tablets are running the latest version of Android?

Android Version Internal Codename Usage as on 01/Jul Usage as on 01/Aug Usage as on 04/Sep
1.5 Cupcake 0.2% 0.2% 0.2%
1.6 Donut 0.5% 0.5% 0.4%
2.1 Eclair 4.7% 4.2% 3.7%
2.2 Froyo 17.3% 15.5% 14%
2.3.x Gingerbread 63.6% 60.3% 57.2%
3.1 Honeycomb 0.5% 0.5% 0.5%
3.2 1.9% 1.8% 1.6%
4.0.x Ice Cream Sandwich 10.7% 15.8% 20.9%
4.1 Jelly Bean N/A 0.8% 1.2%

Google has just updated their distribution charts for the Android platform and it suggests that 20.9% of Android phones and tablets have Ice Cream Sandwich installed. Gingerbread, the most popular Android version ever, still powers 57% Android devices though it was released way back in December 2010.

The above data is based on the number of Android devices that have accessed Google Play within a 14-day period so it may not account for the Android users who do not have Internet on their phones (and this may not be a small set).

According to the following video, there are well over 400 million activated Android devices around the world.