1) Go to “Settings”->”Display”-> “Eye comfort mode”->touch the trigger to activate /deactivate it.
2) Drag down quick settings bar in any interface ->touch "Eye comfort mode” icon to activate/deactivate it.
b. In reading mode, the screen will become monochromic to imitate physical books. Go to “Settings”->”NXTVISION”->”Reading mode”, touch the trigger to activate/deactivate it.t.