iOS 12, Apple's newest version of its mobile operating system, is now installed on the vast majority of iPhones, iPads, and iPod touch devices.
The iPhone maker now offers two views of iOS adoption, showing one measurement for all devices and another for devices introduced in the past four years.
Apple's latest iOS version update shows that as of January 1 iOS 12 was running on 78 percent of Apple mobile devices released over the past four years, with 17 percent still on iOS 11, and five percent on something earlier than iOS 11.
Across all devices in use, iOS 12 is installed on 75 percent of them, with 17 percent on iOS 11, and eight percent on some earlier version. It's likely the three percent difference in the pre-iOS 11 group is because some active iOS devices aren't supported by iOS 12 or iOS 11.
SEE: Apple iOS 12: An insider's guide (free PDF)
As noted by MacRumors, iOS 12 adoption is happening faster than iOS 11, which was running on 65 percent of Apple mobile devices at the beginning of 2018.
Android remains much more fragmented across versions, with the 2016-released Nougat in top spot on 28 percent of all Android devices, followed by Oreo and Marshmallow, each of which are running on about 21 percent of all Android devices.
Android 9.0 Pie, released four months ago, is yet to appear on Google's chart, which excludes all versions with less than 0.1 percent distribution.
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