Beta testers who have signed up for Apple's beta testing program will receive the iOS 11 beta update over-the-air after installing the proper certificate on an iOS device.
Those who want to join the beta testing program can sign up on Apple's beta testing website, which gives users access to iOS, macOS, and tvOS betas. iOS betas are not always stable and should not be installed on a primary device.
While Apple has promised that some major features like peer-to-peer Apple Pay payments and iCloud support for Messages are coming in beta updates, those features are not present in the iOS 11.1 beta.
iOS 11.1 seems to feature only small changes like a tweak to add multiple emoji suggestions to the predictive text options on the built-in keyboard. There's also an updated camera icon under Restrictions, a new animation when tapping the status bar to scroll upwards, and a faster unlock animation.
iOS 11 is a major update to the iOS operating system, introducing significant design changes, a revamped Lock screen experience, a new Control Center, ARKit for developers, new app features, a new App Store, and an entirely reimagined interface for the iPad that includes a Dock, Drag and Drop support, and a new App Switcher for better than ever multitasking.
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