Works effectively Remains resident effectively if all relevant options are enabled. Might be nice to have a little damping in the response  and is lacking enough flexibility in the gain controls for ideal general operation ? though the night mode mitigates the latter to a large extent with some experimentation with thresholds etc. More reliable than Samsung's own auto-brightness  anyway  which has a nasty habit of stopping working and leaving an unusable display in daylight until reboot ? if you can see to do it...
September 16 2016