I'm using my phone naked and I'm relatively careful with my electronic devices. Just now I noticed a 4 cm long hairline scratch on my screen, which is oddly ONLY visible when the screen is off, and under some angles + bright light. The scratch does not affect the quality of the screen whatsoever. I tried to rub the screen with cloth but it's not dirt or anything. It's strange that I can't 'feel' the scratch, it's as if the screen cracked from the inside. Tomorrow I might slam a screen protector and move on, but anyone cares to explain?