I had the same issue of small spider web like scratches along the right edge curve of the screen, heavier towards the bottom than the top. That was within the first 2 days installed. Within a week both sides are showing the same effect. It isn't cracks, can only see it in the correct angle of light, and more prominent when in strong daylight. I also have the Galaxy LED Cover, and if is not a problem with function or screen view. It may get bad over time. The part that irritates me is that the Whitestone was best in most all reviews, and I was really impressed with the installation system, what a let down to see these within days off installation.
Just my two cents and experience.