I had my samsung galaxys s3's screen replaced but now there is a glue-like spot in the middle where it Is very sensitive. When pressed down slightly hard on that area the whole screen freezes but as soon as I lock and unlock it will work fine again. I don't know what's going on is the screem touching the digilizer ? I pressed down on that area its as is I were pressing the diglizer its self it makes a mark behind the screen as if I were touching a laptop screen but then goes away.