Well, I had a crack in my point & shoot camera's LCD screen and what I did was find a LCD screen on ebay and put it in myself. Just did that today and now it works fine. So I imagine a phone could be done the same way. Otherwise, if it is out of warranty, then it will cost too much to have it fix.

I also took apart a BB Curve LCD once so I know it can be done.

it just recently happened out of nowhere a few days ago, now the crack has filled with black so there is a black line going down the middle of my phone.. is there anyway it can be repaired without replacing the phone? if so how much and how long would it take