
IOS 11 was introduced at the Apple Worldwide Developers Conference keynote address on June 5, 2017. It was succeeded by iOS 12 on September 17, 2018. It was announced at the company's Worldwide Developers Conference on June 5, 2017, and released on September 19, 2017. IOS 11 is the eleventh major release of the iOS mobile operating system developed by Apple Inc., being the successor to iOS 10. Drops support for all 32-bit (A6) chips, including the iPhone 5, iPhone 5c, and iPad (4th generation). No third party app support, due to the App Store being shut down.

Obsolete, no longer receiving security updates, because all iPhones, iPads, and iPod Touches that supported iOS 11 support iOS 12 as well. IOS 11 - Apple at the Wayback Machine (archived August 28, 2018)Ī giant step for iPhone. Proprietary software with open-source components
