My note 4 screen is darker in upper portion of screen. I found another post for note 3 here http://androidforums.com/samsung-galaxy-note-3/785408-note-3-screen-darker-top-half.html. Anyone else having this issue with note 4. Update: the darkening is not to much. I would say abt 20% darker at upper portion. It's not apparent at first, But it's noticeable after taking a closer look. .