Function
Reader mode reduces the amount of blue light emitted to protect your eyes.
How to use
1 You can turn on or off Reader Mode under Settings.
Go to Settings > Display > Turn on or off Reader mode
Reader Mode : On Reader Mode : Off
2 You can turn on or off the Reader Mode under Quick Settings.
Pull down the notification bar > Turn on or off Reader mode
Quick Settings > Reader mode
Reader Mode : On Reader Mode : Off