Which iPhones support Siri AI in iOS 27?

Siri AI runs on every Apple Intelligence-capable iPhone: iPhone 15 Pro and 15 Pro Max, all iPhone 16 models, all iPhone 17 models, iPhone 18 models, iPhone Air and iPhone Duo. The advanced on-device features that use the AFM 3 Core Advanced model — Expressive Voices and higher-accuracy dictation — need at least 12GB of memory and are limited to iPhone Air, iPhone 17 Pro, iPhone 17 Pro Max, iPhone 18 Pro and iPhone Duo. iPhone 15 (non-Pro) and older cannot run Siri AI.

Why does Siri AI not work in the EU?

Apple says Siri AI is not available on iOS 27, iPadOS 27 or watchOS 27 in the European Union due to regulatory requirements — the same Digital Markets Act interoperability concerns that delayed earlier Apple Intelligence features in the EU. It is available on macOS 27 and visionOS 27 in the EU when the device and Siri language are set to English. Apple has not announced a date for EU iPhone or iPad availability as of September 15, 2026.

Do I need 12GB of RAM for Siri AI?

No. Core Siri AI — personal context, world knowledge, onscreen awareness, app actions, the Siri app, Visual Intelligence and Write with Siri — works on any Apple Intelligence device because heavy requests go to Private Cloud Compute. The 12GB threshold only gates the features that run the AFM 3 Core Advanced model on device: Expressive Voices with adjustable pace and the upgraded dictation. iPads need M4 or later with 12GB, Macs need M3 or later with 12GB, and Vision Pro needs the M5 model.

Does Siri AI work on Apple Watch?

Yes, on Apple Watch Series 9 or later, Apple Watch Ultra 2 or later and Apple Watch SE 3, when paired with an Apple Intelligence-enabled iPhone nearby, because the models run on the phone. The new Audio Intelligence features — Sound Recognition, Live Rewind and Siri Recap — are exclusive to Apple Watch Series 12 and Apple Watch Ultra 4 and arrive later in 2026.

Quick Answer

Which Devices Support Siri AI? iOS 27 List, EU Status (2026)

Published: September 15, 2026

The short answer

If your device runs Apple Intelligence, it runs Siri AI — with two exceptions: a 12GB memory gate on the most advanced on-device features, and an EU exclusion on iPhone, iPad and Apple Watch. Siri AI shipped September 14, 2026 with iOS 27, iPadOS 27, macOS 27, watchOS 27 and visionOS 27, in English (beta).

Compatibility table (as of September 14, 2026)

Device	Siri AI (core)	Advanced on-device features (Expressive Voices, advanced dictation)
iPhone 15 Pro / 15 Pro Max	✅	❌ (8GB)
iPhone 16 / 16 Plus / 16 Pro / 16 Pro Max / 16e	✅	❌
iPhone 17 / 17 Plus	✅	❌
iPhone 17 Pro / 17 Pro Max	✅	✅ (12GB)
iPhone Air	✅	✅
iPhone 18 Pro	✅	✅
iPhone Duo	✅	✅
iPad mini (A17 Pro)	✅	❌
iPad / iPad Air / iPad Pro with M1–M3	✅	❌
iPad with M4 or later and 12GB	✅	✅
Mac with M1 / M2	✅	❌
Mac with M3 or later and 12GB	✅	✅
MacBook Neo (A18 Pro)	✅	❌
Apple Vision Pro (M2)	✅	❌
Apple Vision Pro (M5)	✅	✅
Apple Watch Series 9+, Ultra 2+, SE 3	✅ via paired iPhone	n/a
Apple Watch Series 12 / Ultra 4	✅ + Audio Intelligence (later 2026)	n/a

Not supported: iPhone 15 and 15 Plus, iPhone 14 and earlier, iPhone SE (2nd/3rd gen), iPads without an M-series chip or A17 Pro, Intel Macs, Apple Watch Series 8 and earlier.

Why 12GB matters

Apple’s third-generation foundation models come in two on-device sizes. AFM 3 Core is the ~3-billion-parameter model that every Apple Intelligence device runs. AFM 3 Core Advanced is larger and natively multimodal; Apple states it needs at least 12GB of unified memory, which is why Expressive Voices (natural-sounding voices with adjustable pace and expressiveness) and the higher-accuracy dictation are restricted to the newest Pro iPhones, iPhone Air, iPhone Duo, M4+ iPads, M3+ Macs and the M5 Vision Pro. Everything else Siri AI does — including the conversational assistant, personal context and onscreen awareness — either fits in AFM 3 Core or runs on Private Cloud Compute, so an iPhone 15 Pro gets the full assistant.

Software and settings requirements

OS: iOS 27, iPadOS 27, macOS 27, watchOS 27 or visionOS 27 (all released September 14, 2026).
Language: device language and Siri language set to English (US, UK, Australia, Canada, India, Ireland, New Zealand, Singapore, South Africa). French, Japanese, Korean, Portuguese and Spanish are scheduled for October 2026.
Apple Account region: not mainland China. In the EU, see below.
Apple Intelligence enabled in Settings → Apple Intelligence & Siri.
Storage: the on-device models need several gigabytes free; Apple shows a download progress state in Settings after enabling.

EU availability: what is and is not blocked

Platform	EU status (Sep 14, 2026)
iOS 27 (iPhone)	❌ Siri AI unavailable for EU-region Apple Accounts
iPadOS 27	❌ unavailable
watchOS 27	❌ unavailable
macOS 27	✅ available if device and Siri language are English
visionOS 27	✅ available if device and Siri language are English

Apple attributes the gap to “regulatory requirements,” the same phrasing it used when Apple Intelligence’s iPhone features first skipped the EU in 2024 under the Digital Markets Act’s interoperability obligations. Mac and Vision Pro are not designated gatekeeper platforms under the DMA, which is why they are unaffected. The rest of the iOS 27 Apple Intelligence updates (Photos tools, Safari features, Writing Tools, Image Playground) are available in the EU. Apple has given no date for EU iPhone Siri AI.

Workarounds people ask about: changing the Apple Account region to a non-EU country technically unlocks the feature but breaks App Store purchases, subscriptions and payment methods tied to the EU account, and Apple can revert it. The honest answer for EU iPhone users is to use the ChatGPT or Gemini apps for now and Siri AI on a Mac.

Daily limits and the future paid tier

Apple’s footnotes state that features relying on server-side models, including Siri AI and intelligent photo editing, are subject to daily usage limits that may vary, and that expanded access will be offered for a fee in the future. Apple has not published the limit values or the price. In practice this applies equally to every supported device; it is not tied to the 12GB threshold.

Quick decision guide

Buying a phone for Siri AI in late 2026: any iPhone 17 Pro, iPhone Air, iPhone Duo or iPhone 18 Pro gets everything. An iPhone 17 or 16 gets the full assistant minus Expressive Voices and advanced dictation.
Already on iPhone 15 Pro: you get Siri AI; there is no need to upgrade for the core features.
iPhone 15 or older: no Siri AI. The ChatGPT and Gemini apps remain the option.
EU iPhone owner: wait, or use Siri AI on a Mac.