A data collected from any device that visited or accessed the Google Play store application in the seven days before the 1st November shows that 52.1 percent of all the Android devices are running one of the three variants of Android OS Jelly Bean.
Some devices running on Android 4.4 KitKat are not featured in this ranking; Google does not include devices with less than 0.1 per cent penetration in this survey, and the Google Nexus 5 device has only been available for a few days with the latest Android version 4.4 included.
After all these combined Jelly Bean count, most other Android devices, 26 percent to be exact, are still stuck on the almost three-year-old OS version 2.3 Gingerbread update, which was the first Android version to support a secondary front-facing camera and some large, high-resolution display phones. Besides, Android 4.0 Ice Cream Sandwich version also accounts for around a 20 percent share.
It's generally unlikely that these older devices will ever be updated to OS version Jelly Bean, since the phone and tablet manufacturers generally stop supporting their old devices within a couple of years. With the latest 4.4 KitKat update, Google is pushing many of their in-house app updates directly through the Play store so that older devices can access the updated features even on an older versions of the OS, like Ice Cream Sandwich.
This data also goes to show how much more popular Android OS is for smart phone use than for a tablet. Almost 90 per cent of Android devices have got a screen smaller than 5 inches in size, and also a fair proportion of screens in that 5-inch-plus tablet territory are "phablets", such as the latest Samsung Galaxy Note 3 and the latest from Sony, Sony Xperia Z Ultra.