More than a billion Android devices are running an outdated version of the OS, a new analysis has revealed.

The analysis, presented by hardware engineer Dan Luu, suggests that the latest version of the software, Oreo 8.0, is installed on only 0.3 devices.

Oreo was released last month and is installed only on Google Pixel and Nexus devices.

Dan Luu collected the figures of outdated Android smartphones and tablets from 2010 to date using Google’s developer dashboard.

He also found that more than a billion Android devices are two years out of date and said there is almost no chance that they will ever get an update to a modern version of the OS.

“In May 2017, Google announced that there are over two billion active Android devices. If we look at the latest stats (the far right edge), we can see that nearly half of these devices are two years out of date,” he wrote in his blog post.

His graph shows that 30.9 percent Android devices are running Marshmallow 6.0, which was released two years ago.

Three-year-old Android Lollipop is second at the list of the most used version of the OS, having been the part of 27.7 percent devices.

Android Nougat, which was released in July, is installed on 20.6 percent devices, the distribution chart shows.

Samsung’s 2016 flagship Galaxy J3 has got a Nougat update just a few days ago.

All the other versions have a combined market share of 7.2 percent.

Dan Luu observes some active Android devices are now more than seven to eight years old which run Gingerbread and Ice Cream Sandwich, which were released in May 2010 and October 2011 respectively.

His graph also shows that the uptake of recent versions of Android is apparently slowing down. The reason behind is that relatively fewer devices are receiving updates or relatively fewer people are getting new devices.

Android Authority recently noted that despite the release of Oreo, the manufacturers are still launching their new devices with Nougat, Marshmallow and older versions.

iOS, on the other hand, is well ahead of Android in terms of software updates. Let’s take the example of iPhone 5S, which was released in September 2013 and received the update to latest iOS 11 along with the other flagship devices.

iOS 11 was released in September this year and has been installed on around 80 percent iPhone devices.