I too have an LCD bruising concern when pressing on the front glass towards the top of the unit. I disassembled and cleaned all parts twice for quality control. During reassembly I paid close attention to the concern area. Still noticing some slight bruising on the LCD after reassembly. During my initial teardown I noticed that the individual I purchased the damaged iPhone from had been nosing around the guts, ergo: missing and loose screws etc. I also noticed that this person tried prying the front display and bezel away from the midframe using what ever they could find -- most likely a small screw driver. (1) It's possible the previous owner slightly warped the midframe assembly during their attempt to separate the front display and bezel from the midframe. Conclusion: in my particular case the LCD bruising is being caused by air gaps between the front display bezel and the midframe -- because the gap tolerance is almost infinitesimal and there is no visible obstructions preventing the front display...