Customize Power button gesture
You can customize the Power button, controlling what happens when you press it twice and when you press 
& hold it.
Choose what happens when you press Power twice 
1. Go to Settings > Gestures.
2. Touch Double press power key.
3. Choose if you want to open the camera or to start a voice command with Google Assistant. If you don't 
want anything to happen, choose None.
Choose what happens when you press & hold Power 
1. Go to Settings > Gestures.
2. Touch Press & hold power button.
3. Adjust settings:
•
To see the Power menu for turning off or restarting the phone, or going into Lockdown mode or 
Emergency mode, select Power menu.
•
To start voice command with Google Assistant, select Digital assistant.
Use the slider to adjust how long you need to press & hold before Google Assistant opens.
To see the Power menu for turning off and restarting, you'll need to press the Power + Volume up 
buttons simultaneously.
Settings : Gestures 235