List of devices supported by the Apple iOS 9
Apple iOS 9 is here but the list of devices supported by the latest iOS 9 is not known to many, here is the list of devices supported by iOS 9:iPhone 4s, 5 , 5c , 5s, 6 , 6 Plus , 6s , 6s Plus
iPad Air, Air 2 , mini 1 , mini 2 , mini 3 , mini 4 , Pro
All devices that can run the iOS 8 can install the iOS 9 with limitations to certain functions.