The E-ink display is not backlit like traditional screens, so in daylight it will feel like you're reading from paper. We've included a screen light so that the display can be illuminated for low light situations.
By default, the screen light is set to "automatic" in which the ambient light sensor on the front face of the phone determines if the screen light is required.
Screen Light Settings
Settings > Preferences > Display > Screen Light
Always Off: The screen light remains OFF, regardless of lighting situation.
Automatic: Using the ambient light sensor on the front face of the phone, the light will turn ON/OFF automatically according to the lighting situation.
Always On: The screen light will be ON when the phone is awake, regardless of lighting situation.
The Screen Sleep Timer is the duration for which the screen continues displaying information while the device is inactive before the device goes to sleep (blank screen).
Settings > Preferences > Display > Sleep Timer
Screen Timer Settings:
NOTE: The e-ink display is special in that it consumes no battery to leave the display on and open to a page with information on screen. However, if the screen light is ON, the light will consume battery while displaying information.
Invert Screen Colors
You can invert the colors of the screen in the settings. It flips the color of the text and the background.
Open Settings > Preferences > Display > Toggle ON / OFF Invert Colors Option
NOTE: In sleep mode (blank screen), the background color of the screen is unaffected by this setting and will remain the same color as the body of the phone itself.