A lot of users? iOS has the fastest and widest adoption rate for new releases of any mobile or not OS. Android specifically used to have awful fragmentation issues and phones never updated by the vendor 3 and 4 releases behind.
APPLE IOS 12 HAS SEEN THE FASTEST ADOPTION RATE, RUNNING ON 50% OF IPHONES AND IPADS (Oct 12)
https://www.firstpost.com/tech/news-analysis/apple-ios-12-ha...
iOS 11 is now installed on 81% of Apple’s over a billion active iPhone, iPad and iPod touch devices in the wild, up from the 76% adoption rate reported on April 25. By contrast, Android Oreo versions powered less than six percent of active Android-driven smartphones and tablets that had been accessing Google’s Play Store during a seven-day period ending on May 7, 2018.
https://www.idownloadblog.com/2018/06/05/ios-11-adoption-rat...