https://www.cnet.com/news/ios-12-already-running-on-50-percent-of-apple-mobile-devices/

By comparison, the latest version of Google's rival Android operating system -- Oreo -- was released more than a year ago but is still loaded on only 19 percent of Android devices, thanks to fragmentation. The operating system suffers from having a number of hardware and carrier partners that like to add their own flourishes to the software and release their own updates at their own pace.

iOS 12 debuted on Sept. 17 with the introduction of the iPhone XS and the XS Max. The biggest changes to the software are a new Memoji feature, improved handling of notifications, a revamped Do Not Disturb feature and a Measure app.