I have an iphone 4 GSM, and just got a relatively new iPhone 4 Verizon. The verizon iphone is like new but I need to use the GSM iphone because I have a sim card carrier. Would it be possible to remove the screen from the verizon phone and install it in the gsm iphone? The gsm iphone screen has a few scratches and I hate using it because of this... And then would it be possible to install the gsm iphone screen in the verizon phone? Let me know thanks!