How To Turn Off Iphone X With Siri

Change Siri settings on iPhone

You can change the voice for Siri, prevent access to Siri when your device is locked, and more.

For information about how to set up and use Siri, see Ask Siri on iPhone.

Go to Settings > Siri & Search, then do any of the following:

Prevent Siri from responding to the voice command "Hey Siri": Turn off Listen for "Hey Siri."
Prevent Siri from responding to the side or Home button: Turn off Press Side Button for Siri (on an iPhone with Face ID) or Press Home for Siri (on an iPhone with a Home button).
Prevent access to Siri when iPhone is locked: Turn off Allow Siri When Locked.
Change the language Siri responds to: Tap Language, then select a new language.

You can also activate Siri by typing. See Type instead of speaking to Siri.

Go to Settings > Siri & Search, then do any of the following:

Change the voice for Siri: (not available in all languages) Tap Siri Voice, then choose a different variety or voice.
Change when Siri provides voice responses: Tap Siri Responses, then choose an option below Spoken Responses.
Always see the response from Siri onscreen: Tap Siri Responses, then turn on Always Show Siri Captions.
See your request onscreen: Tap Siri Responses, then turn on Always Show Speech.

If you don't want the active app to remain visible behind Siri, go to Settings > Accessibility > Siri, then turn off Show Apps Behind Siri.

Go to Settings > Siri & Search, then turn on or off any of the following:

See Siri Suggestions on iPhone.

You can change which apps you can use with Siri, as well as the Siri Suggestions and Siri Shortcuts settings for any app.

You can say something like, "Turn up the volume" or "Turn down the volume."

Or use the volume buttons. See Adjust the volume on iPhone.

Go to Settings > Siri & Search, turn off Listen for "Hey Siri," then turn on Listen for "Hey Siri" again.

To change Siri accessibility settings, see Use accessibility features with Siri on iPhone.

If Siri doesn't work as expected on your iPhone, see the Apple Support article If "Hey Siri" isn't working on your iPhone or iPad.

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Source: https://support.apple.com/guide/iphone/change-siri-settings-iphc28624b81/ios