How to change Siri volume

When Siri is speaking, press the Volume buttons on the side of your iPhone.

If you're using headphones, adjust the volume from your iPhone. 

1. On your Apple Watch, open the Settings app. 
2. Tap General > Siri.
3. Scroll down to Voice Volume — Speaker.
4. Tap the volume controls. Or tap the slider, then turn the Digital Crown. 

When Siri is speaking, press the Volume control  in the menu bar, then drag the slider to adjust the volume.

If you're using headphones, adjust the volume from your Mac. 

Siri automatically adjusts the volume on your HomePod based on the level of noise in the room. When Siri isn't speaking, you can tap - or + on the top of your HomePod to change the volume.