iPhone Got wet, screen faint
I dried the phone out for a while but noticed moisture between the lcd and the outside glass so I took the display assembly off and cleaned all the glass off. When I re-assembled the monitor was very faint, but the phone turned on and worked. Now the monitor won't show anything at all, but the phone still appears in iTunes and I can call it and it will ring. Would replacing the whole display assembly be a solution to this or is there something else that might be causing this to happen?
Actually, I would beg to differ with Franco.
Even though the main functions of the phone work, except for the problems with the dim screen, you could still have damage to the logic board. This happened with me. I was unable to resolve it, but some people recommend doing some surgery on the logic board.
In my opinion, before you purchase a new screen, I would
1) check the connections again to make sure everything is fully connected (connector 1 can be tricky and appear connected when it's not)
2) try and find someone who will let you take apart their phone, and swap the screen in to see if that resolves the problem.
Well the issues definatley occured with the humidity in the water or if not the water its self got into the device. I would recommend replacing the lcd-screen not the glass panel/whole display assembly. It cant be the logic board due to you can still actively use it via Phone calls and iTunes. Start off by Turning off the iPhone let it dry off once thats done purchase the lcd-screen and follow the guides in the repair section of iFixit. Everything should look fine afterwards.