I am trying to replace a cracked screen for my nephew. My sister has ordered 3 screens as replacements, but they are thicker than the original. The original is 4.0mm thick and the replacements we are receiving are 4.4 or 4.5mm thick. This is preventing the screen from seating completely and not letting the adhesive make contact. Is there a specific model number or such that I should be looking for in a replacement? I previously replaced the screen on my niece's 4g and didn't have any problems.