What is Auto Adjust Screen Tone in Samsung Smartphones?

Auto adjust screen tone which is available in display settings of device is used to enable the display to reduce battery usage for the display of extra HD resolution files.

After enabling this feature your device automatically dims the white spaces in the screen while users working on website like “Google”. You can check out this by minimizing user browser when you are browsing through internet. 

Click here to know how to enable Auto adjust Screen tone feature in Samsung Galaxy S4 (GT-I9500).

NOTE: This feature may not hold for color sensitive users and doesn't care for battery life.