{"slug": "ios-27-beta-4-now-available-as-apple-tests-major-siri-ai-upgrade", "title": "iOS 27 beta 4 now available as Apple tests major Siri AI upgrade", "summary": "Apple has released iOS 27 beta 4 for developer testing, continuing its summer beta cycle ahead of a public release this fall. The update is centered on Siri AI, Apple's rebuilt assistant powered by new Apple Foundation Models, which brings richer conversations, personal context, and deeper app actions. iOS 27 also includes AI-powered improvements across Photos, Safari, Mail, and other apps, with some features requiring newer Apple Intelligence-compatible hardware like iPhone 17 Pro.", "body_md": "Apple has released the fourth iOS 27 beta for developer testing. iOS 27 beta 4 replaces the third iOS 27 beta, which had two release versions, and continues Apple’s summer beta cycle ahead of a public release this fall. We’ll update our devices and share what we discover.\n\n## Apple releases fourth iOS 27 developer beta for testing\n\nThe fourth developer beta is available now through the Settings app on eligible iPhones. If you’re enrolled in the Apple Developer Program, go to Settings > General > Software Update > Beta Updates and choose the iOS 27 Developer Beta.\n\nApple released the[ first iOS 27 public beta](https://9to5mac.com/2026/07/13/ios-27-public-beta/) on July 13. Today’s release will likely become iOS 27 public beta 2 next week. The final version for everyone will arrive this fall.\n\nAs always with developer betas, you should still expect bugs, battery life drops, app compatibility issues, and other rough edges.\n\n## iOS 27 is all about Siri AI\n\niOS 27 is one of Apple’s most AI-focused iPhone updates yet. The headline change is [Siri AI](https://9to5mac.com/2026/06/08/new-siri-whats-new/), Apple’s rebuilt assistant powered by the next generation of Apple Intelligence and new Apple Foundation Models.\n\nSiri AI brings richer conversations, personal context, broader world knowledge, on-screen awareness, and deeper app actions across the system.\n\nOn iPhone, Siri AI also gets a new visual experience tied to the Dynamic Island, plus a [dedicated Siri app](https://9to5mac.com/2026/06/13/ios-27-adds-an-all-new-app-to-your-iphones-home-screen/) for revisiting conversations across devices.\n\nVisual Intelligence joins Siri too, including a new Siri mode in the Camera app and improvements that affect [Camera Control on iPhone](https://9to5mac.com/2026/06/11/ios-27-brings-another-very-welcome-improvement-to-camera-control-on-iphone/).\n\nApple Intelligence is also expanding across apps. iOS 27 adds AI-powered improvements for Photos, Safari, Passwords, Mail, Messages, Phone, Shortcuts, Home, and more. As we covered in our breakdown of [Apple’s new Foundation Models](https://9to5mac.com/2026/06/11/apples-new-foundation-models-explained-on-device-ai-cloud-ai-and-everything-in-between/), some capabilities run on-device, while others use Private Cloud Compute.\n\nNot every iOS 27 AI feature will work on every iPhone. iOS 27 itself supports iPhone 11 and later, plus iPhone SE 2 and newer, but [Siri AI requires newer Apple Intelligence-compatible hardware](https://9to5mac.com/2026/06/12/siri-ai-is-coming-to-newer-apple-devices-only-heres-the-full-list/). Apple’s most powerful on-device AI model has even stricter requirements, including [iPhone 17 Pro and iPhone Air](https://9to5mac.com/2026/06/08/ios-27s-most-powerful-on-device-ai-requires-iphone-17-pro-iphone-air/).\n\n## More iOS 27 features and changes\n\nBeyond Siri and Apple Intelligence, iOS 27 includes a variety of iPhone-specific changes. Apple has refined the Liquid Glass design introduced last year, including a [new Liquid Glass transparency slider](https://9to5mac.com/2026/06/15/ios-27-adds-new-liquid-glass-slider-on-iphone-heres-what-it-lets-you-do/) for adjusting the look of system UI.\n\nThere are also performance improvements for app launches, Photos loading, Camera launch in Low Power Mode, AirDrop transfers, and Wi-Fi-to-cellular transitions.\n\nOther iPhone changes include Photos keywords and star ratings, customizable slideshows, smoother Camera behavior, continuous sending in Messages, Dual Capture in FaceTime, custom EQ for AirPods, new recovery options, [easier Apple Pay card switching](https://9to5mac.com/2026/06/13/ios-27-makes-it-easier-to-switch-between-apple-pay-cards/), and [AI-generated wallpaper creation](https://9to5mac.com/2026/06/11/ios-27-lets-you-create-your-own-iphone-wallpapers/).\n\nWe’re installing iOS 27 beta 4 now and will update with any notable changes. In the meantime, you can catch up on [everything new in iOS 27 from Apple’s keynote list](https://9to5mac.com/2026/06/12/heres-everything-new-in-ios-27-and-more-per-apples-keynote-list/).\n\nSpot any changes in today’s release of iOS 27 beta 4? Let us know in the comments below!\n\n**Do more with your Apple products**\n\n[Apple AirTag 2 | Add Find My tracking to keys, bags, bikes, more](https://amzn.to/4vjNWN1)\n\n[AirPods 4 | Apple’s newest wireless headphones](https://amzn.to/43ndewV)\n\n[AirPods Pro 3 | Apple’s best wireless headphones](https://amzn.to/4ut3FYp)\n\n[Beats USB-A to USB-C Cable | The official CarPlay cable](https://amzn.to/4mpKs7K)\n\n*FTC: We use income earning auto affiliate links.* [More.](https://9to5mac.com/about/#affiliate)\n\n[our homepage](http://9to5mac.com/)for all the latest news, and follow 9to5Mac on\n\n[exclusive stories](https://9to5mac.com/feature/exclusive/),\n\n[reviews](https://9to5mac.com/guides/review/),\n\n[how-tos](https://9to5mac.com/guides/how-to/), and\n\n[subscribe to our YouTube channel](https://www.youtube.com/9to5mac)", "url": "https://wpnews.pro/news/ios-27-beta-4-now-available-as-apple-tests-major-siri-ai-upgrade", "canonical_source": "https://9to5mac.com/2026/07/20/ios-27-beta-4/", "published_at": "2026-07-20 17:05:23+00:00", "updated_at": "2026-07-20 17:34:11.589316+00:00", "lang": "en", "topics": ["artificial-intelligence", "large-language-models", "ai-products", "ai-infrastructure", "ai-research"], "entities": ["Apple", "Siri", "Apple Intelligence", "Apple Foundation Models", "Private Cloud Compute", "iPhone 17 Pro", "iPhone Air"], "alternates": {"html": "https://wpnews.pro/news/ios-27-beta-4-now-available-as-apple-tests-major-siri-ai-upgrade", "markdown": "https://wpnews.pro/news/ios-27-beta-4-now-available-as-apple-tests-major-siri-ai-upgrade.md", "text": "https://wpnews.pro/news/ios-27-beta-4-now-available-as-apple-tests-major-siri-ai-upgrade.txt", "jsonld": "https://wpnews.pro/news/ios-27-beta-4-now-available-as-apple-tests-major-siri-ai-upgrade.jsonld"}}