iOS 27 is coming in September 2026 and brings the biggest Siri upgrade in the assistant's history, a revamped Liquid Glass UI, full Apple Intelligence for Greek, new Live Translation on AirPods , and dozens of improvements to photos, messages, and security. Below are the 10 most important features, which iPhones will support them, and which features require the new iPhone 18 Pro.
See also: iOS 27 beta 5: When is it coming out, new features & how to install it
1. Siri AI: The biggest redesign in the assistant's history
The new Siri brings full Apple Intelligence integration with four major new features that change everyday use:
- Onscreen Awareness: Siri recognizes what the user sees on the screen and suggests relevant actions
- Personal Context: Remembers previous conversations and connects information between apps
- Greek language: First time with full Apple Intelligence support in Greek
- Standalone Siri app: New app for chat history, like ChatGPT
2. Liquid Glass UI: New visual language for the entire system
iOS 27 brings the most drastic aesthetic change since iOS 7. Liquid Glass UI introduces transparent glass elements across all system apps, with fluid transitions and smart background blur. The changes include:
- New Control Center design with glass panels
- Redesigned Dynamic Island with fluid movement
- New app icons with depth and light refraction
- Updated appearance of notifications and widgets
3. Live Translation on AirPods and Dynamic Island
One of the most impressive features: real-time translation during a conversation. The user wears AirPods and hears their interlocutor in another language speaking directly in Greek. The reverse translation appears in the Dynamic Island of the iPhone for the other person. It works with 15+ languages on-device without a connection to the cloud.
4. Visual Intelligence: Recognizing objects everywhere
Visual Intelligence extends to the entire system. The user points the camera at an object and the iPhone gives immediate information, prices, recognizes plants, animals, monuments and signs. New: it also works via screenshots — you point to a screenshot and ask for information.
5. AI Photo Editing: Object Removal and Scene Enhancement
AI-powered editing tools are added to the Photos app :
- Clean Up 2.0: Object and person removal with deep machine learning integration
- Scene Enhancement: Automatic scene enhancement based on content
- Portrait Refine: Adjust depth of field and post-capture lighting
- Generative Fill: Extending a photo beyond its natural boundaries
6. Writing Tools in emails, messages and documents
Writing Tools are extended to every text field in iOS 27. The user selects text and has access to: Proofread, Rewrite, Summarize, Make Professional, Make Friendly. It works in Mail, Messages, Notes, Pages, and even third-party apps. For the first time, Writing Tools are available in Greek.
7. Health app with integration of third-party medical data providers
The Health app is significantly upgraded with:
- Integrating blood tests from collaborating diagnostic centers
- Automatic medication updates from electronic prescriptions
- New AI-driven trend analysis for measurements (heart rate, steps, sleep)
- Sharing with a doctor via encrypted link
8. Passwords app: Upgraded password manager
The iOS 27 Passcodes app brings full support for passkey sharing with trusted contacts, automatic breach detection through dark web monitoring, and warnings about password reuse. New: family password sharing with selective sharing per service.
9. New Messages and FaceTime features
In Messages and FaceTime, iOS 27 adds:
- Genmoji 2.0: Create emoji from text with more accurate styles
- Message Summaries: Summary of long group conversations
- FaceTime AI Framing: Automatically center and zoom during a call
- Live Captions on FaceTime: Live subtitles in 12 languages
10. Performance and security improvements
Performance and security have significant upgrades:
- App launches: up to 30% faster on older devices
- Keyboard loading: instant, no delay in multitasking
- AirDrop: 2x faster large file transfers
- Enhanced Lockdown Mode: New protections against government spyware
- Enhanced Communication Safety: AI-based detection of deepfake content in calls
Which iPhones support iOS 27
Apple has kept the same compatibility list with iOS 26. Any iPhone running iOS 26 can be upgraded to iOS 27.Full list of supported models:
- iPhone 17, iPhone 17e, iPhone 17 Pro, iPhone 17 Pro Max
- iPhone 17 Air (formerly iPhone Air)
- iPhone 16, iPhone 16e, iPhone 16 Plus, iPhone 16 Pro, iPhone 16 Pro Max
- iPhone 15, iPhone 15 Plus, iPhone 15 Pro, iPhone 15 Pro Max
- iPhone 14, iPhone 14 Plus, iPhone 14 Pro, iPhone 14 Pro Max
- iPhone 13, iPhone 13 mini, iPhone 13 Pro, iPhone 13 Pro Max
- iPhone 12, iPhone 12 mini, iPhone 12 Pro, iPhone 12 Pro Max
- iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max
- iPhone SE (2nd and 3rd generation)
Important limitation: Full advanced Apple Intelligence and Siri AI features (custom voices, on-device AI models) are exclusively available on iPhone 17 Pro, iPhone 17 Pro Max, and iPhone 17 Air. Older models get basic features with cloud processing.
When is it coming out and how do you install it?
The official release is expected in mid-September 2026, a few days after the announcement of the iPhone 18 Pro. The upgrade will be free via Settings → General → Software Update. For travelers: anyone who wants to try it out earlier can sign up for the Apple Beta Software Program and get the current beta.
Frequently Asked Questions about iOS 27
Will all AI features work on the iPhone 15 Pro?
Most will, but with cloud processing. Custom Siri voices and more advanced on-device AI models require iPhone 17 Pro or later. The iPhone 15 Pro will have access to Onscreen Awareness, Personal Context, and Writing Tools via Apple Private Cloud Compute.
Will iOS 27 drain more battery on older iPhones?
On the contrary, Apple has invested in battery optimizations specifically for iPhone 12 and iPhone 13. Developers who have tested the beta report reduced consumption in background processes and improved autonomy when streaming.
Will Live Translation work with AirPods 3?
No. Live Translation requires at least AirPods 4 or AirPods Pro 2/3 due to the N1 chips that support on-device audio processing. AirPods 3 do not have the necessary processor.
Will there be a Greek Siri voice repertoire?
Yes. Apple confirmed at WWDC that iOS 27 will feature at least three Greek Siri voices (one male, two female) with a completely new neural network for more natural pronunciation.
Will the release be delayed due to the iPhone 18 Pro?
No. iOS 27 will be released the same week as the official release of the iPhone 18 Pro, as is Apple's custom. Expected on Monday, September 14 or Monday, September 21, 2026, depending on the date of the Apple event.
Does iOS 27 require more storage?
Yes, slightly. The initial install takes up about 1.5GB more than iOS 26, mostly due to on-device AI models. iPhone owners with 64GB of base storage will need to clear out files before upgrading.
See also: iPhone 18 Pro: 10 important features that change your iPhone
iOS 27 represents one of the most significant upgrades in recent years, mainly due to the complete integration of Apple Intelligence and Greek language support. The editorial team of SecNews will cover in detail every official announcement from the Apple event in September. Sources: OS X Daily, Apple developer preview, MacRumors.
