IOS 11

iOS 11 is the eleventh major release of iOS, developed and distributed by Apple Inc. It was formally announced at the 2017 Worldwide Developers Conference alongside tvOS 11, watchOS 4 and macOS High Sierra, where the new features were showcased. iOS 11 was released on September 19, 2017, alongside the iPhone 8, the 8 Plus and the iPhone X. It succeeded iOS 10 and was followed by iOS 12.

New features
iOS 11 was advertised to "improve the iOS you know and love." New features included augmented reality and AirPlay 2. Other functions in iOS were updated or completely redesigned, such as the Control Center and the App Store.

iOS 11 also completed the transition of running solely in 64-bit to improve overall performance, dropping support for older 32-bit apps that had never been updated. Though some users complained, this was necessary to eliminate the memory and performance overhead of continuing to support legacy 32-bit architecture.

Supported devices
iOS 11 is downloadable for free and supports the following devices: {| style="width:100%;font-size:96%;line-height:120%;"
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iPad

 * iPad Air (all models to date)
 * iPad (5th generation)
 * iPad (6th generation)
 * iPad mini 2
 * iPad mini 3
 * iPad mini 4
 * iPad Pro (all models to date)
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iPhone

 * iPhone 5 S
 * iPhone 6 / 6 Plus
 * iPhone 6 S / 6 S Plus
 * iPhone 7 / 7 Plus
 * iPhone 8 / 8 Plus
 * iPhone X

iPod touch

 * IPod touch (6th generation)
 * }

Unsupported devices
The following older Apple devices are not supported by iOS 11 or later. The last update for iOS 10 will be the final compatible update for the following devices: {| style="width:100%;font-size:96%;line-height:120%;"
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iPad

 * iPad (4th generation)
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iPhone

 * iPhone 5
 * iPhone 5c
 * }