i like a dim screen especially at night (in a dark room) - something about samsung displays in a darken room at lowest brightness (also trying many different screen dimmers) that just doesn't work... i think my eyes are more sensitive than others, i've always used computer screens at the lowest level. i've also had at least 15 different lcd android tablets and phones without any problem. first samsung i tried was the tab s 8.4 and now i have a tab s2 9.7 both just don't do well for me in a dark room. i get headaches and my eyes feel strained. i've also tried every screen setting such as reader mode, adaptive etc... also i put cyanogen on the tab s 8.4 and although i think it helped a little, not much. please don't tell me i need to go to the eye doctor. i've also got a sony z4 tablet and with a screen dimmer it's almost perfect. i can read on it in a dark room all night long

as well as an old lg g pad 8.3 and a mate 7 huawei phone all of which are fine also.