Apple has released the iOS 27 software update today, September 14, which introduces significant changes and improvements for compatible iPhone models. The update features a new Siri AI and various enhancements across apps and system functionalities. Although the official rollout starts today, users may not see the update immediately on all eligible devices. The newest iPhone models, including the iPhone 18 Pro, iPhone 18 Pro Max, and iPhone Duo, will come pre-installed with iOS 27.

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Before proceeding with the installation, users should verify their device's compatibility, back up their data, and ensure sufficient available storage. Instructions for downloading iOS 27 include going to Settings, then General, and selecting Software Update. If the update appears, users can then tap Download and Install and follow the on-screen prompts. Users may also enable automatic updates through the same settings pathway. If the update is not available right away, users can check back later, as availability can vary based on device and current software version.

Eligible devices for iOS 27 include a range of older iPhones, specifically:

- iPhone 17 Pro Max

- iPhone 17 Pro

- iPhone Air

- iPhone 17

- iPhone 17e

- iPhone 16 Pro Max

- iPhone 16 Pro

- iPhone 16 Plus

- iPhone 16

- iPhone 16e

- iPhone 15 Pro Max

- iPhone 15 Pro

- iPhone 15 Plus

- iPhone 15

- iPhone 14 Pro Max

- iPhone 14 Pro

- iPhone 14 Plus

- iPhone 14

- iPhone 13 Pro Max

- iPhone 13 Pro

- iPhone 13

- iPhone 13 mini

- iPhone 12 Pro Max

- iPhone 12 Pro

- iPhone 12

- iPhone 12 mini

- iPhone 11 Pro Max

- iPhone 11 Pro

- iPhone 11

- iPhone SE (2nd generation and later)

Apple's compatibility list includes models dating back to the iPhone 11 series and the second-generation iPhone SE. However, certain features, such as Apple Intelligence and the enhanced Siri AI, require newer hardware, specifically the iPhone 16 models and later, as well as the iPhone 15 Pro and iPhone 15 Pro Max.

Users are advised to back up their devices ahead of the major update. Backups can be done via iCloud or a computer. Ensuring sufficient storage is critical, as the update requires free space. Users may need to manually delete unnecessary content if space is limited.

Additional recommendations before installing iOS 27 include:

- Connecting the device to Wi-Fi

- Keeping the iPhone plugged in during the update

- Having Apple Account credentials handy

- Checking available storage in the iPhone’s settings

After updating, users should verify their essential apps are functioning correctly and updated, particularly for banking or work-related services. Maintaining adequate storage during a major update is crucial; clearing unnecessary files may be beneficial.

iOS 27 introduces several new features, most notably improvements to Siri, which is now designed to better understand natural language requests. The update also includes new AI-driven photo editing tools like Spatial Reframing and an enhanced Clean Up feature, along with a revamped Flyover experience in Apple Maps. The Health app receives updates to support information related to perimenopause and menopause, along with expanded GymKit functionalities.