iPhone 6 is fuzzy after screen display replacement.

So, I am repairing an iPhone 6 for a client of mine and after transferring all the necessary parts from the old unit to the new unit and putting it back together, this is happening. I would think that it is a connection error, but I want to know if anyone else has had this same problem. Also, the display has lost the touch feature. I touch and slide the screen and nothing happens, but the touch ID still works (thank God). Any and all help will be accepted and needed.