Disable Siri on iPhone

Permanently Disable Siri on iPhone

To permanently disable Siri on iPhone go to Settings > Siri & Search and turning OFF all options under “ASK SIRI” section.

On the confirmation pop-up, tap “Turn OFF Siri” option to confirm.

Delete the Siri and Dictation History. A popup will ask for confirmation and then it will send the request to apple servers to delete the data collected when you used Siri.