I have a problem with my Note 2 that I can't seem to fix. The screen mode was in standard since I got it, but now it has changed (don't know how) to a "negative" screen. I have tried to change it through normal settings, but it will not change back to normal. When I try to change it all of the options are the same. Even the camera and photos previously taken are "negative". Please help, I HATE this!