The latest edition of the mobile operating system that powers the iPhone was rolled out to customers around the world on September 16, with iPadOS, watchOS and tvOS also receiving updates that week. Unlike last year, when users of the 2013 iPhone 5s and thus the 2014 iPhone 6 and 6 Plus were left behind in the jump to iOS 13, this year's update supports all iPhone models that supported iOS 13.
As the following chart shows, Apple has significantly extended the life cycle of iPhone models over the years. While the first iPhone and thus the iPhone 3G received two major iOS updates, later models have received software updates for five to six years. The iPhone 6s was launched in 2015 with iOS 9 and may still be compatible with this year's iOS 14.
