iOS 26 Apple Intelligence リリースガイド：要件、有効化、Writing Tools、Siri 基礎
リリース週は iOS 26 インストール可否と Apple Intelligence 対応機を分ける。設定で有効化し、Writing Tools と Siri 言語を確認。
Searching Apple Intelligence iOS 26 on release week usually means four checks: whether your iPhone is on Apple’s Apple Intelligence hardware list (not just the iOS 26 install list), whether iOS 26 is installed, whether Settings shows Apple Intelligence ready to turn on, and whether Siri language matches what Apple documents for your region.
Apple expanded Apple Intelligence across iOS 26 with on-device and Private Cloud Compute features described on apple.com/apple-intelligence/ and in the iPhone User Guide. Below follows only support.apple.com/guide/iphone/get-started-with-apple-intelligence-iph2aac53b6a/26/ios/26, support.apple.com/guide/iphone/get-started-with-writing-tools-iph676da4caa/26/ios/26, support.apple.com/guide/iphone/use-siri-with-apple-intelligence-iph77fd13567/26/ios/26, support.apple.com/guide/iphone/whats-new-in-ios-26-iphfed2c4091/26/ios/26, support.apple.com/en-us/123075, apple.com/ios/feature-availability/, and Apple’s “How to get Apple Intelligence” support article—not a full feature catalog.
Release week: two lists—iOS 26 install vs Apple Intelligence hardware
iOS 26 compatibility is wider
Apple’s iPhone User Guide lists iPhone 11, iPhone SE (2nd generation), and later models for the iOS 26 software update via Settings → General → Software Update. Installing iOS 26 updates system apps and Liquid Glass chrome (123075) even when Apple Intelligence is unavailable on that phone.
Apple Intelligence needs listed iPhones and regions
Apple’s get-started guide (iph2aac53b6a/26) and feature-availability page state Apple Intelligence requires supported iPhone models, a supported iOS version, device language and Siri language in Apple’s supported set, and an eligible region. iPhone 15 Pro, iPhone 15 Pro Max, iPhone 16 series, and iPhone 17 series appear on Apple’s Apple Intelligence materials—verify the live list on apple.com before assuming an older Pro model qualifies.
Device and software requirements (Apple docs)
| Requirement | Apple source | Release-day check |
|---|---|---|
| iOS 26 installed | Software Update; iphfed2c4091/26 | Settings → General → About |
| Apple Intelligence iPhone | iph2aac53b6a/26; apple.com/apple-intelligence/ | Settings shows Apple Intelligence |
| Language & Siri | iph2aac53b6a/26; iph77fd13567/26 | Same supported Siri language |
| Region | apple.com/ios/feature-availability/ | Availability message in Settings |
| Apple Account signed in | Get-started guide | Settings → [your name] |
Turn on Apple Intelligence after iOS 26
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01
Back up, then install iOS 26
Apple Support recommends backing up before major updates. Use iCloud Backup or an encrypted backup on Mac/PC, then install via Settings → General → Software Update. Apple Intelligence features require the OS version Apple lists in iph2aac53b6a/26—not a partial install.
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02
Open Settings → Apple Intelligence
On supported hardware the get-started guide routes you to Settings → Apple Intelligence (wording on device). Follow the on-screen setup: sign in with your Apple Account if prompted, accept terms, and wait for any required downloads on Wi‑Fi and power.
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03
Match Siri language
Guide iph77fd13567/26 ties Siri with Apple Intelligence to supported Siri languages. Open Settings → Siri (or Apple Intelligence & Siri) and confirm the language matches Apple’s compatibility table—mixed language setups can hide Writing Tools or Siri summaries.
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04
Review privacy and reporting
Apple documents on-device processing and Private Cloud Compute for certain requests on apple.com/apple-intelligence/. During setup, note reporting options Apple describes in Settings—release week is a good time to read what leaves the device versus what stays local.
Writing Tools basics (Apple paths)
Where Writing Tools appear
Apple’s Writing Tools guide (iph676da4caa/26) describes proofread, rewrite, and summarize actions in Mail, Messages, Notes, Pages, and other supported text fields after Apple Intelligence is on. Select text, tap the Writing Tools item in the edit menu or toolbar, then choose an action Apple lists for that app.
Rewrite tones Apple documents
The same guide lists tone options such as Friendly, Professional, and Concise for rewrite—exact labels follow the device language. Apple processes eligible Writing Tools requests using on-device models with Private Cloud Compute only when Apple’s documentation says a cloud pass is required.
When Writing Tools are missing
If no Writing Tools entry appears, Apple’s troubleshooting path starts with Apple Intelligence enabled, supported app updated with iOS 26, and text actually selected. Regional locks on apple.com/ios/feature-availability/ can disable subsets even when the toggle is on.
Siri basics with Apple Intelligence
On-screen awareness
Guide iph77fd13567/26 explains that Siri with Apple Intelligence can use on-screen context when you ask about what you are viewing—follow Apple’s examples for Mail, Messages, and system apps. Requires Apple Intelligence on and permissions Apple prompts for during first use.
Type to Siri and voice
Apple documents Type to Siri and voice activation paths under Settings → Siri. After iOS 26, re-open Listen for and keyboard shortcuts if upgrades reset attention—especially on devices that share a desk with Mac Siri.
ChatGPT extension (optional)
Apple’s get-started materials describe an optional ChatGPT extension for certain Siri and Writing Tools requests when enabled in Apple Intelligence settings. It is off until you opt in; read Apple’s privacy disclosure before turning it on in a work profile.
Apple newsroom and iphfed2c4091/26: Apple Intelligence features arrive through the iOS 26 software update on eligible iPhones—not as a separate App Store download. Installing iOS 26 on iPhone 11 does not by itself add Apple Intelligence hardware features.
Edges to read on release week
- EU, China mainland, and other regions
- apple.com/ios/feature-availability/ lists where Apple Intelligence, Writing Tools, and Siri enhancements ship. Settings may show a wait message even on supported silicon if the region is not enabled yet.
- Visual Intelligence and other AI surfaces
- iOS 26 also documents Visual Intelligence, notification summaries, and Image Playground in separate guides. This release guide stops at turn-on, Writing Tools, and Siri—see Apple’s Visual Intelligence article if you need Camera Control flows.
- Mac and iPad parity
- Apple Intelligence on Mac and iPad follows separate get-started guides. iPhone setup does not automatically configure a Mac on an older macOS build—check each device after the phone finishes.
# Release-week path (summary)
iOS 26: Settings → General → Software Update
Apple Intelligence: Settings → Apple Intelligence → turn on
Writing Tools: select text → Writing Tools → Proofread / Rewrite / Summarize
Siri: Settings → Siri; language must match Apple list
Docs: iph2aac53b6a/26, iph676da4caa/26, iph77fd13567/26
apple.com/ios/feature-availability/While models download, a five-minute team sync still fits one page
Apple Intelligence setup can take Wi‑Fi time on release night. For a quick voice plus whiteboard check-in from the phone you are not updating yet, open frogmeet. Mobile limits: モバイルブラウザの注記.
Questions worth checking
Does iPhone 11 get Apple Intelligence on iOS 26?
Apple lists iPhone 11 for iOS 26 installation, but Apple Intelligence requires the separate hardware list in iph2aac53b6a/26 and apple.com/apple-intelligence/. Install eligibility and Apple Intelligence eligibility are different checks.
Where are Writing Tools in third-party apps?
Apple documents Writing Tools first in its own apps and standard text controls (iph676da4caa/26). Third-party support depends on developers adopting Apple’s text APIs—if missing, confirm Apple Intelligence is on and try Mail or Notes as a baseline.
Siri feels unchanged after enabling Apple Intelligence?
Verify Siri language against iph77fd13567/26, confirm region on feature-availability, and retry on-screen questions in apps Apple lists. Some Siri features also need Apple Intelligence downloads to finish while plugged in on Wi‑Fi.