iOS 9 runs on all the same hardware that ran iOS 8 as well as a few of the things introduced at Apple's September event. Generally speaking, that's great. The iPhone 4S and iPad 2 both showed up in 2011, though both were sold up until last year—most other mobile devices that came out that long ago have long since stopped receiving software updates. The complete list:
- The iPhone 4S, 5, 5C, 5S, 6, 6 Plus, 6S, and 6S Plus.
- The iPad 2, third- and fourth-generation Retina iPads, both iPad Airs, and all three iPad Minis.
- The fifth- and sixth-generation iPods Touch.