5 ms·Windows also has had this for a little while. I don't know if it's a default in Android.by ekun 8y agoWindows also has had this for a little while. I don't know if it's a default in Android.flamedoge 8y agoWindows Night Lightscns 8y agoLineageOS has it, do not know about stock.Vendan 8y agoModern android has a "night mode" that you can configure to turn on after a certain time of day that cuts the blue light.