2 phones one brightness 3/4 and one at 1/2 brightness now both have burned in images of the buttons on videos pages that never move. The second one I've only used the app approx 2 hours. So if you own a Samsung phone beware of this. Even doing what's recommended this app still burns in the phone screen will not use again. Sad part is I enjoy the app and could waste literally hours at a time when I used on my old phone