iOS 27 Has Two Dictation Systems. Here Is Which One Is on Your iPhone.

If you have an iPhone 17 Pro or iPhone Air running iOS 27 beta, there is a significantly better version of dictation sitting dormant in your Settings right now. Apple did not turn it on when you installed the update. Most users have no idea it exists.

The feature is called Advanced Dictation Preview, and finding it requires navigating to Settings, then General, then Keyboards, then Dictation, and toggling it on manually. That four-tap path, buried in a sub-menu most people open once and never revisit, is currently sitting between a meaningful upgrade and the people who would most benefit from it.

But the opt-in is only half the story. The more important thing to understand is that iOS 27 ships with two separate dictation systems, and which one you have access to depends entirely on which iPhone is in your pocket.

What Advanced Dictation Preview Actually Is

Standard dictation in iOS has always been server-side and connection-dependent for anything beyond short phrases. It works, but it makes mistakes, applies punctuation inconsistently, and requires your voice to leave your device to be processed. Every iPhone running iOS 27 gets some improvement to this system, but the underlying architecture is the same.

Advanced Dictation Preview is something categorically different. It runs on a new on-device model Apple calls AFM Core Advanced, the same model that also powers the new expressive Siri voices. Because everything happens locally, it works without an internet connection. More practically, it handles capitalization and punctuation automatically as you speak rather than requiring you to say "comma" or "period" aloud. Apple describes it as a "major boost in accuracy," and hands-on testing from Tom's Guide backs that up, finding the new system made noticeably fewer errors and produced cleaner text than its predecessor without manual corrections.

Digital Trends noted that the punctuation handling alone could make third-party dictation apps redundant for most users, which is a meaningful shift given how many people pay monthly subscriptions for dedicated transcription tools precisely because the built-in option falls short.

Why It Is Gated to Specific Devices

The hardware requirement is specific: iPhone 17 Pro, iPhone 17 Pro Max, iPhone Air, iPad with M4 chip or later with at least 12GB of RAM, and Mac with M3 chip or later with at least 12GB of RAM. The standard iPhone 17, and every iPhone model before it, does not qualify.

The gate is RAM, not chip generation. AFM Core Advanced requires a minimum of 12GB to run on-device at the performance level Apple considers acceptable. The standard iPhone 17 ships with 8GB. The iPhone 16 Pro, despite being a recent and capable device, also tops out at 8GB and is excluded. This is not a tiered rollout that will expand over time: it is a fixed hardware requirement, and the line sits squarely at the 12GB threshold.

That means two people using the same app on devices released six months apart can have a meaningfully different experience typing a voice message or drafting an email with dictation. The iPhone 17 Pro user gets punctuation handled automatically and accurate transcription running entirely on-device. The iPhone 17 user gets the improved but still fundamentally unchanged system that every iOS 27 device receives. Apple has not made this distinction especially visible.

Why It Ships Off by Default

The "Preview" label in the feature name is doing real work here. Apple is shipping Advanced Dictation as an opt-in specifically because it is beta software with a new underlying model, and the company is being careful about pushing a fundamentally different transcription system onto users without their knowledge. The same logic applies to the new expressive Siri voices, which are also off by default and also labeled as a preview in Beta 1.

The conservative rollout makes sense from Apple's perspective: a dictation system that occasionally produces worse results than the one it replaced would generate immediate and loud complaints. Keeping it opt-in during the beta cycle lets Apple gather feedback from users who have deliberately chosen to try it, which is a cleaner signal than a forced rollout to everyone with a compatible device. Whether it ships enabled by default when iOS 27 goes public this fall is an open question.

For now, if you have a compatible device and want the better system: Settings, General, Keyboards, Dictation, Advanced Dictation Preview. The toggle is there. Most people just have no reason to know to look for it.