Set Up Your Daily
Screen Time Limits 
Try to set your daily screen time and usage limits for apps through Screen Time Management. When the time is up, it will remind you by restricting the apps.
*Open Settings>Digital balance, select “Me” to enter, then enable Screen Time Management.
Tint Your Screen
a Warmer Colour 
Eye Comfort mode can filter out blue light for more comfortable reading experience at night.
*Go to Settings > Display & brightness > Colour & eye comfort > Eye Comfort, Enable and adjust an appropriate Colour temperature.
Adjust the Screen
Brightness
Swipe down the menu bar and manually drag the brightness slider, or enable Automatic adjustment, guaranteeing your screen is always friendly to eyes.
*You can adjust it manually in the drop-down menu bar, or go to Settings > Display & brightness, enable Automatic.
Enlarge Text and
Display Size
The size of text and picture in the E-mail, message, and app etc. can all be changed according to your preference. Adjust Text and display size to improve your reading experience.
*Go to Settings > Display & brightness > Text and display size.
Clearer in the Dark 
When using your phone in a dark environment, Dark mode is easy on your eyes, which can help to reduce glare from bright lights.
*Go to Settings > Display & brightness, enable or disable Dark mode.
*EMUI 10.0 and above versions support dark mode.
*Reminder: The instructions above are followed with EMUI 10.1 as an example. It may be slightly different in other versions. Please adjust according to your actual situation.