To learn more about using Siri, the voice assistant for iPhones and iPads, see our guide How to use Siri.
This section takes you step by step through on how to enable Siri to listen for atypical speech on your iPhone or iPad, complete with pictures of the screen to help.
1. Tap the Settings icon on your Home screen to open the Settings app. Scroll down and tap Accessibility.
2. On the Accessibility page, scroll down to the bottom and tap Siri.
3. Tap the toggle switch for Listen for atypical speech to turn it on.
When you are happy with your settings you can return to the Home screen by swiping up from the bottom of the screen or by pressing the Home button on devices with a physical Home button.