Mtk 6575 screen display problem?

Hello guys my mtk 6575(iphone 4s fake) has a big problem. The screen has stayed black after the phone fall to the floor. I can open and I have understand that it works great but it doesn't shows colors. When I press the power button the black screen goes on dark gray(the brightness increased).

Sounds like it has physical damage in side, get a estimate from your local repair shop…