Apple announced iOS 9 on June 8, 2015, at its annual Apple Worldwide Developers Conference (WWDC) event, and it was released to the public on September 16, 2015 alongside the iPhone 6S, iPhone 6S Plus and iPad Mini 4. With this release, Apple did not drop support for any iOS devices. Therefore, iOS 9 was supported on the iPhone 4S onwards, iPod Touch (5th generation) onwards, the iPad 2 onwards, and the iPad Mini (1st generation) onwards. However, iOS 9 has limited support on the iPhone 4S, iPad 2 and iPad 3, iPad Mini (1st generation), and iPod Touch (5th generation). This release made the iPad 2 the first device to support six major releases of iOS, supporting iOS 4 to 9. Despite Apple’s promise of better performance on these devices, there were still widespread complaints that the issue had not been fixed. iOS 9.3.5 is the final release on the iPhone 4S, iPad 2 and 3, iPod Touch (5th generation) and iPad Mini (1st generation).
