How to Enable Dark Theme on Stock Android Version 9.0 Pie?br br Note: This dark theme is present on the notifications panel, volume slider, App Drawer, and also some other places.br br Step 1: Open 'Settings' App. br br Step 2: Tap on 'Display,' and then Tap on 'Advanced.'br br Step 3: Scroll down at the very bottom, and then tap on 'Device Theme.'br br Step 4: Tap on 'Dark' at the Pop-Up.br br It's done.