So this appeared on the back of my iphone the day after I applied the Bodyguardz. So far I've been pretty happy with the bodyguardz, but this is annoying. Do you guys think that it's an actual stain on the white back or just on the inside of the Bodyguardz cover? I'm afraid to take it off and see because it's my second back piece that I've applied, and I don't have another to apply. Sorry that the pics aren't perfectly clear - the streak is more prominent in real life, but I don't have another camera to take a picture of the back, so I had to use a mirror.