I got my iPhone 4 replaced on Friday due to a dodgy home button. The replacement was perfect, until I noticed that when you change the focus of your eyes to another area of the screen, these very fine "scan lines" or what is better described as interlacing lines appear. They're more noticeable on darker areas, but they're annoying when you do notice them. My launch iPhone 4 that was replaced didn't have this, although it did always have a screen protector applied. Anyone else notice these lines? Or am I going to have to try and show this to a Genius and risk looking like an OCD patient?