With the help of Siri, you can get things done by asking, because it sends information like your voice input, contacts and location to Apple to deal with your requests. For example, you can make a phone call, send a message, look for a restaurant, etc. To turn it on or off, this article introduces two methods for your reference.
2 ways to turn on and turn off Siri in iPhone or iPad:
Way 1: Turn Siri on or off in Settings.
Enter SettingsGeneralSiri, and click the switch beside Siri to turn it on.
Accordingly, you can tap the switch beside Siri in Settings/General/Siri to turn it off.
