Use the tweaks app on youriPadoriPhone, or System Preferences on a Mac, to disable Siri.

Confirm withTurn Off Siri.

On the message prompt about Dictation remaining on Apple’sservers, tapTurn Off Siri.

Siri & Search, toggles, Turn off Siri in iOS

See the instructions below if you don’t turn off Dictation at this step.

Go toSettings>General>Siri, and toggle offSiri.

TapTurn Off Siriwhen asked to confirm your choice.

Keyboard, Enable Dictation toggle, Turn off Dictation on iOS

Disabling Siri on iOS 10 also turns offAllow “Hey Siri”.

This is also necessary if you wish to remove all of your voice data from Apple’s servers.

Turning off Dictation is the same on iOS 12, 11, and 10.

System Preferences item in Apple Menu on macOS

Go toSettings>General>Keyboard.

Scroll to the bottom of the screen and turn off theEnable Dictationtoggle switch.

In the confirmation box, tapTurn Off Dictation.

Enable Ask Siri checkbox in macOS

How to Disable Siri on macOS

Disabling Siri on a Mac is also fairly straightforward.

Go to theApplemenu and selectSystem Preferences.

Clear theEnable Ask Siricheckbox.

Dictation Off radio button in macOS Keyboard System Preferences

This turns everything else off, including removing the Siri icon from the menu bar.

For that, you have to turn off dictation.

Go to theApplemenu, selectSystem Preferences, chooseKeyboard, then select theDictationtab to turn the feature off.