Spilled water on my iphone 4 the screen is completely black but everything else still works?

I can answer phone calls and unlock my phone by memory of were everythings at. It recognizes touch and the sound works fine. It just the screen is black. If anyone has ever had this happened and fixed there's please tell me how i need to get this fixed as soon as possible

Probably you have to change screen. Also put it on rice if you did it recently to absorbe the water.