Dropped my phone on steps. Initially, it displayed 90% black and about 10% of the display was OK. However now, the display is completely black. Sadly to fix this I need a new LCD display which costs about $100. Wasting such money on an old phone is useless. So planning for a new phone. However, if you want to fix a similar issue check these out.
Also check ebay out for “samsung s2 lcd”
P.S.: I can still use my phone, guessing where what is. I sometimes take screenshots and download them using Airdroid or my usb cable to see what page I am and where the option I need is. I am getting pretty good at using the phone without display. I wonder how visually impaired use their smartphones.