Sharp ROUVO V User Manual page 211

Brightness level
From the Display screen, tap Brightness level to use the slider bar on the top
of the screen to adjust the brightness level of your phone.
Dark theme
From the Display screen, use the toggle switch
Dark theme, which uses a black background to help reduce power
consumption on some screens.
Tap on Brightness level to access detailed adjustments for Dark theme.
• Use the toggle switch
• Tap on Schedule to set Dark theme schedule, and the options include
None, Turns on at custom time, or Turns on from sunset to sunrise.
to enable or disable Use Dark theme.
211
to enable or disable