I took the case off to clean the phone and put it back on, and turned it on and there was black circles and lines. Samsung said I damaged it, but I told them it's defective. I used to own a cell phone store and we would get phones with the exact same blotches all the time.The screens were defective. I took it to UbreakIfix, and they don't have any screens. So I sent it to Samsung. Any help would be greatly appreciated.