One user reports returning to classic Siri by turning Siri off and back on in Settings > Siri, then choosing classic Siri. Apple’s voice-trigger and side-button controls are separate settings, so changing the voice trigger is a different adjustment.
What Siri AI is and which iPhones qualify
Apple describes Siri AI as a beta conversational assistant with personal-context understanding and onscreen awareness. Beta means Apple presents the feature in a beta phase.
Apple lists Siri AI as available in English in the US. It requires iOS 27 or later, an Apple Intelligence-enabled iPhone 15 Pro, iPhone 15 Pro Max, or iPhone 16 model or later, and supported Siri and device language settings.
The reported switch back to classic Siri
The reported sequence is:
- Open Settings > Siri.
- Turn Siri off.
- Turn Siri on again.
- Choose classic Siri.
This is one user’s account of switching back. It is not a guarantee that the same option or sequence will appear on every iPhone.
Voice activation and the side button
To stop the iPhone from listening for the “Siri” or “Hey Siri” wake phrase, turn off that voice activation in Siri settings. Apple lists Press Side Button for Siri as a separate control; if it remains enabled, the side button is another way to invoke Siri.
Siri AI and Apple Intelligence
Siri AI is the assistant; Apple Intelligence is the broader set of features. Apple lists separate controls for features such as Messages and Mail summaries, notification summaries, and priority notifications.
