Using the Ok Google hotword to start a search or execute a command on your phone is a cool, useful feature.
All of those nifty Google voice commands are one of the major strengths of using an Android phone. But they’re even more powerful if you enable Ok Google detection from any screen.
Every Android phone has the Google App installed by default, as this has become a core part of how Android works at this point. So go ahead and open the app drawer and look for Google. Launch it.
once you've enabled Audio History and recorded your voice so Google knows what to listen out for you can activate the Ok Google hotword voice search from any screen on your Android device. Now that you've had a taste of this feature can you imagine ever being without it again?