iOS 27 is now rolling out to compatible iPhones, and this year, the list of models supported by Apple's new software update is impressively long.Typically, Apple leaves a handful of iPhones out in the cold when releasing a new version of iOS — the iPhone XR, iPhone XS, and iPhone XS Max, for instance, couldn't run iOS 26 — but refreshingly, the device requirements for iOS 27 are the same as those for iOS 26.That means the iPhone SE (2020), iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max — all of which you might have expected to lose support this year — will still be able to run iOS 27, which is an impressive showing of software support on Apple's part.Alas, the device requirements for Apple Intelligence and Siri AI aren't so straightforward, so in this guide, we've detailed the support list for iOS 27, Apple Intelligence, Siri AI, and iPadOS 27.iOS 27Even the iPhone 11 can run iOS 27 (Image credit: Future)Here’s the full compatibility list for iOS 27:iPhone SE (2020)iPhone 11iPhone 11 ProiPhone 11 Pro MaxiPhone 12iPhone 12 ProiPhone 12 Pro MaxiPhone 12 miniiPhone 13iPhone 13 ProiPhone 13 Pro MaxiPhone 13 miniiPhone SE (2022)iPhone 14iPhone 14 PlusiPhone 14 ProiPhone 14 Pro MaxiPhone 15iPhone 15 PlusiPhone 15 ProiPhone 15 Pro MaxiPhone 16iPhone 16 PlusiPhone 16 ProiPhone 16 Pro MaxiPhone 16eiPhone 17iPhone 17 ProiPhone 17 Pro MaxiPhone AiriPhone 18 ProiPhone 18 Pro MaxiPhone DuoiOS 27 is supported by a whopping 33 iPhone models, which, if I'm not mistaken, is the largest-ever single pool of latest-update-compatible models.What's more, iOS 27 began rolling out to all 33 of these models in one fell swoop on September 14 — Apple didn't ask owners of older iPhones to wait, which is something we've seen Samsung do, for instance, with its One UI updates.It’s worth noting, however, that even though older models like the iPhone 11, iPhone 12, and iPhone 13 support iOS 27, Apple Intelligence — which includes features like Clean Up, Live Translation, and Apple's new AI-powered voice assistant, Siri AI — remains locked to the iPhone 15 Pro and newer.Siri AISiri AI in iOS 27 (Image credit: Lance Ulanoff / Future)As above, only those iPhones that are already compatible with Apple Intelligence will support Siri AI. The full list is as follows (I've included iPads and MacBooks, too):iPhone 15 ProiPhone 15 Pro MaxiPhone 16iPhone 16 PlusiPhone 16 ProiPhone 16 Pro MaxiPhone 16eiPhone 17iPhone 17 ProiPhone 17 Pro MaxiPhone AiriPhone 18 ProiPhone 18 Pro MaxiPhone DuoiPad models with M1 or laterMacBooks with M1 or laterMacBook NeoImportantly, though, not all Siri AI features will be available on those iPhones, iPads, and MacBooks.The Siri AI voice customization interface in iOS 27 (Image credit: Apple / Future)Specifically, expressive voices and advanced dictation are limited to devices powered by Apple’s "most powerful on-device model," AFM Core Advanced. Those devices are as follows:iPhone 17 ProiPhone 17 Pro MaxiPhone AiriPhone 18 ProiPhone 18 Pro MaxiPhone DuoiPad Pro models from 2024 and later (7th generation onwards)iPad Air models from 2026 and later (8th generation onwards)MacBook Pro models from 2023 and laterMacBook Air models from 2024 and laterAdditionally, those iPads and MacBooks will need to be equipped with at least 12GB of memory to be capable of running advanced Siri AI features.Importantly, Siri AI isn't available in any form on iPhones and iPads in the European Union (EU) or China: "Unfortunately, due to the Digital Markets Act (DMA), Apple will not be able to ship Siri AI in the European Union with the release of iOS 27 and iPadOS 27. Over the past several months, EU regulators did not accept any of Apple’s proposed solutions to bring Siri AI to the EU while safely supporting other virtual assistants," Apple explained in a blog post.Interestingly, though, EU users can access Siri AI on macOS 27 and visionOS 27.So, frustratingly, you'll need to meet quite a few criteria if you're hoping to try the best version of Siri AI on your Apple device.iPadOS 27Siri AI in iPadOS 27 (Image credit: Lance Ulanoff / Future)As for iPads, specifically, the only iPadOS 26-compatible models that don't also support iPadOS 27 are the iPad 10.2-inch (2020), iPad Air 10.5-inch (2019), and iPad mini 7.9-inch (2019).Here’s the full compatibility list for iPadOS 27:iPad models from 2021 and later (9th generation onwards)iPad Air models from 2020 and later (4th generation onwards)iPad Pro models from 2017 and later (2nd generation onwards)iPad mini models from 2021 and later (6th generation onwards)Side note: almost all iPad models are available in multiple sizes and in Wi-Fi-only and Wi-Fi + Cellular configurations, so, in the interest of readability, I’ve grouped the above models into dated categories.