Except if you have an android phone with assistant enabled, it will hear ‘OK, Google’ even when mic is not on. Things they mention are not impossible to implement, but those will require to fiddle a lot with the hard- and software of the phone, something a manufacturer can totally do
That’s like from a decade ago.
Does your phone have its microphone on permanently at all times? Mine doesn’t. Maybe fiddle with settings.
Except if you have an android phone with assistant enabled, it will hear ‘OK, Google’ even when mic is not on. Things they mention are not impossible to implement, but those will require to fiddle a lot with the hard- and software of the phone, something a manufacturer can totally do