Getting around screen burn-in
My Galaxy S4 has a burn-in problem. It's good for an hour or so, but then videos become un-watchable, and I have to not use it for a while before it goes back to normal. But every now and then, when I re-boot, the colors appear duller, but much better than when it's all burned-in. This goes away after about ten minutes. Is there a way to force it to stay that way? Some kind of setting or app I can use?