Making sure that its latest software releases can run on as many devices as possible has always been a high priority for Apple. After all, this is a critical weapon against competitors, especially in the smartphone business. Apple often cites its iOS adoption rates, comparing them to Google’s and drawing the same conclusions: That iOS is better than Android, for both regular users and developers. With iOS 10, Apple is pretty much sticking to the same rule. The operating system will be available on most current devices, but one big one-has been finally removed from the list. DON’T MISS:- 13 best new features coming to the iPhone and iPad in iOS 10 I say "finally" because it’s probably time the iPhone 4s got left behind . Even though Apple is looking to optimize iOS releases so they work on older hardware, devices including iPhone 4s and iPad 2 have caused the most headaches for consumers anxious to try the latest iOS release. There had been huge problems with the original iOS 8 release, and iOS 9 brought over some improvements but users on these devices still complained about performance issues.-Strangely enough, the iPad 2 and the original iPad mini are both eligible for iOS 10 but the 4S is gone. The complete list of supported devices follows below. iPhone iPhone 6s iPhone 6s Plus iPhone 6 iPhone 6 Plus iPhone SE iPhone 5s iPhone 5c iPhone 5 iPad iPad Pro 12.9-inch iPad Pro 9.7-inch iPad Air 2 iPad Air iPad 4th generation iPad 3rd generation iPad 2 iPad mini 4 iPad mini 3 iPad mini 2 iPad mini iPod touch iPod touch 6th generation iPod touch 5th generation

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