iOS 27 beta 4 now available as Apple tests major Siri AI upgrade

Key Points:

• Apple has released the fourth developer beta of iOS 27 (build 23G71), available now for eligible iPhones through the Settings app, continuing the summer beta cycle ahead of a public release this fall.
• iOS 27 focuses heavily on AI enhancements, with the new Siri AI offering richer conversations, personal context, broader knowledge, and a new visual experience tied to the Dynamic Island, alongside a dedicated Siri app for cross-device conversation history.
• The update introduces Visual Intelligence features in the Camera app and AI-powered improvements across various apps including Photos, Safari, Mail, Messages, and more, with some functionalities requiring newer hardware like the iPhone 17 Pro and iPhone Air.
• Additional iOS 27 changes include refinements to the Liquid Glass design with a transparency slider, performance boosts for app launches and connectivity, new Photos features, continuous sending in Messages, Dual Capture in FaceTime, custom EQ for AirPods, and AI-generated wallpaper creation.
• As with all developer betas, users should expect potential bugs, battery life issues, and app compatibility problems while testing iOS 27 beta 4 before the expected public beta 2 release next week.