It also explains how to disable Google Assistant on a smartwatch.
The instructions in this article apply to Android version 10 and higher and iOS 14 through iOS 11.
SelectGoogle>Account Services>Search, Assistant & Voice.

Select theAssistanttab, and then scroll down to the Assistant devices section and tapPhone.
Tap on theGoogle Assistantslider to turn it off.
From there, toggleOK Google Detectionto off.

Go toSettings>Google Assistant>Microphoneand slide the switch toOff.
This method doesn’t disable Google Assistant completely.
you could still pop in your requests.
Another way to turn off OK Google on iOS is todelete the app.
This works the same as it does for every other iOS app.