Apple is testing a new Advanced Dictation Preview feature in iOS 27 Beta 1, according to a June 12 report from 9to5Mac. The feature can be enabled manually and is designed to work offline, giving supported devices stronger speech-to-text performance without relying on an active internet connection.
The company says the upgraded iOS 27 dictation system uses improved AI dictation technology to raise transcription accuracy. It is meant to recognize spoken words more precisely while also handling capitalization and punctuation in real time. That matters for people who dictate messages, notes, emails, reminders, or search queries throughout the day.
By default, the feature is turned off. Users who want to try it need to open the Settings app, go to General, choose Keyboard, scroll down to the Dictation section, and enable the “Advanced Dictation Preview” switch.
Once enabled, the new dictation capability works system-wide. That means it applies anywhere the system keyboard supports voice-to-text input, rather than being limited to one specific Apple app. The feature should also improve the broader Siri AI experience because voice recognition and local language processing are central to how Siri understands requests.
The most important detail is that Apple’s new offline AI dictation runs fully on the device. If users are on a plane, in a weak-signal building, traveling in an area with poor coverage, or simply trying to avoid cloud processing, the system should still deliver consistent transcription quality.
There is a catch: the hardware requirements are high. The report says Advanced Dictation Preview is limited to iPhone 17 Pro, iPhone Air, the second-generation Vision Pro with an M5 chip, iPads with an M4 chip or newer and at least 12GB of memory, and Macs with an M3 chip or newer and at least 12GB of memory.
That device list suggests Apple is leaning heavily on local AI models that need both strong neural processing performance and enough memory. It also fits a broader pattern in iOS 27, where some AI features are expected to be limited to newer hardware even if the basic operating system supports a wider range of devices.
For U.S. users, the feature could be especially useful for productivity and accessibility. More accurate dictation reduces cleanup time, while automatic punctuation and capitalization make dictated text closer to something users can send or save immediately. Offline support also makes it more reliable in real-world situations where cloud speech recognition can become slow or unavailable.
The new iOS 27 dictation feature is still in beta, so Apple may adjust the name, availability, or device list before the final release. But the direction is clear: Apple wants more everyday AI features to run locally, and Advanced Dictation Preview is one of the most practical examples so far.
