Why is my screen still black? I do replace the new one.

anything about the phones history??

does it show anything but has no backlight or is everything "dark"?

does it power on at all?

anything special weehn you connect it to a computer?

does itunes show you anything special or does the iphone connect normal?

try to hard reset it: press and hold the sleep and the hoe button at the same time until the phone restarts - since you aren't able to see anything on the screen - you have to hold the buttons for at least 10 seconds