Apple announced that iOS 27 began rolling out to compatible iPhones on September 14. The update, described as a major software refresh, introduces a new Siri AI, expanded Apple Intelligence capabilities, and a suite of system‑level improvements. While the rollout starts on the announced date, Apple cautioned that the update may not appear on every eligible device at exactly the same moment.
How to Install iOS 27
The simplest method to install iOS 27 is directly from the iPhone. Users should open Settings, navigate to General and then Software Update. If the update is ready for the device, it will be listed on that screen, and a Download and Install button will appear. Apple also provides an option to enable automatic updates in the same menu under Automatic Updates. Should the update not appear immediately, the device can be checked again later, as availability can depend on the model and its current software version.
For users who prefer a computer‑based installation, Apple permits updates via a Mac or PC. Connecting the iPhone to a Mac, opening Finder, selecting the device, and choosing General > Check for Update will present the same download option. After confirming, users can select Download and Update to complete the process.
Eligibility and Hardware Requirements
Apple released an extensive list of iPhone models that can run iOS 27. The list spans from the iPhone 11 series and the second‑generation iPhone SE up through the newest iPhone 18 lineup. Specifically, the following models are confirmed compatible:
- iPhone 18 Pro, iPhone 18 Pro Max, iPhone Duo (shipping with iOS 27)
- iPhone 17 Pro, iPhone 17 Pro Max, iPhone 17, iPhone 17e
- iPhone 16 Pro, iPhone 16 Pro Max, iPhone 16 Plus, iPhone 16, iPhone 16e
- iPhone 15 Pro, iPhone 15 Pro Max, iPhone 15 Plus, iPhone 15
- iPhone 14 Pro, iPhone 14 Pro Max, iPhone 14 Plus, iPhone 14
- iPhone 13 Pro, iPhone 13 Pro Max, iPhone 13, iPhone 13 mini
- iPhone 12 Pro, iPhone 12 Pro Max, iPhone 12, iPhone 12 mini
- iPhone 11 Pro, iPhone 11 Pro Max, iPhone 11
- iPhone SE (2nd generation and later)
While the operating system will install on all listed devices, Apple noted that not every new feature will be available on older hardware. The advanced Apple Intelligence and Siri AI capabilities, for example, require newer processors and are limited to iPhone 16 models and later, as well as the iPhone 15 Pro and iPhone 15 Pro Max.
Preparing a Device for the Update
Apple recommends several preparatory steps before initiating a major software upgrade. First, users should back up their iPhone either via iCloud or by connecting to a computer. A backup creates a safeguard in case the installation encounters issues. Second, sufficient free storage is essential; iOS 27 requires space for both the download and the installation process. If storage is low, users may need to delete videos, apps, or other content manually.
Additional best practices include ensuring the device is connected to Wi‑Fi, keeping it plugged into power throughout the installation, and having the Apple ID password handy. Checking the storage summary in the iPhone’s settings can confirm that enough space is available. For users who rely on critical apps for banking, work, or other services, it is advisable to verify that those apps are updated and that login credentials are accessible after the system upgrade.
Key Features Introduced in iOS 27
The headline feature of iOS 27 is the new Siri AI, which Apple describes as a more capable version of its voice assistant. Siri AI is said to understand natural language requests more effectively and help users accomplish tasks more efficiently.
In the realm of photography, iOS 27 adds AI‑driven editing tools. Spatial Reframing allows users to adjust composition after a photo is taken, while an upgraded Clean Up feature streamlines removal of unwanted elements. Apple Maps receives an enhanced Flyover experience that leverages aerial imagery and visual intelligence models to deliver richer, more detailed views.
Health and fitness also see notable upgrades. The Health app now supports perimenopause and menopause information within its Cycle Tracking feature. GymKit functionality is expanded, and additional health and fitness capabilities are introduced, though specific details beyond these points were not disclosed.
Overall, iOS 27 blends AI‑centric enhancements with incremental improvements across core apps, positioning the update as both a performance boost for newer devices and a functional refresh for a wide swath of the iPhone ecosystem.
Users who meet the eligibility criteria and follow Apple’s preparation guidelines can expect a relatively straightforward upgrade path, whether they choose the on‑device method or prefer to update via a Mac or PC. As the rollout continues, the availability of the update will gradually reach all supported iPhones, delivering the new Siri AI and other features to the broader user base.
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