Chosen Solution
After the phone fell from my pocket onto a tile floor, the display went black. For a while I could see a few thin, faint horizontal lines at the bottom of the display, but then those went dark, too. The touchscreen still works. I can answer calls (if I swipe in the right part of the screen), take pictures (if I can hit the camera icon blind), and so on. I used the disassembly guide to locate the display data cable. I pried it off gently, then snapped it back on and reassembled the phone, but no dice - it acts exactly the same. What else could be the problem? Is it fixable?
LCD is broken. Samsung galaxy S3 LCD screen and touch screen, they are one and the same. You need change it. Probably $ 132.
Yup, as Chloe said, LCD was damaged, you can replace the LCD+touchscreen+frame, which can make your repair much easier and less risky, S3 screen replacement is not that expensive now, it costs less than $80, check it out: http://www.etradesupply.com/oem-samsung-…
