If full screen mode (gesture control / no virtual keys) is enabled on the Xiaomi smartphone, we can assign the Google Assistant to the On/Off button, which means that after activating this feature, a short press of the On/Off button is enough to wake up the Google Assistant.
- Open the Settings
- Tap on Additional settings
- Tap on Button shortcuts
- Enable or disable Press and hold the Power button for 0.5s to turn on Google Assistant