Is anyone else having this problem? Like most of us, I have mine turned down to about 25-30% to save battery. Automatic screen brightness is turned OFF, so that is not a factor. I also cannot pinpoint it to anything (like the use of an app, etc). I'll just all of the sudden notice that its extremely bright, I'll go to settings, and its back to 100%. I'll turn it down, and than a day or so later is will turn itself back up again. HELP!? 
