I bought my iphone 5 about two months ago and had no problem whosoever but since i installed the Glass Screen Protector i noticed DARK SCREEN( could hardly see what's on ) at times especially during calls. I have to press and release the power button for things to normalise. The screen becomes very DIM in such a way one could hardly make out what is on it.Anybody with similar problem and what is the solution since i love my Glas.tr very much.Thanks my dear friends.