Originally Posted by imlgl
Might be able to get away with a warranty claim as it's all damaged underneath, just say you didn't drop it or anything
Sent from my GT-I9505 using xda app-developers app
Who gets warranties on smart phones these days? I paid the $8/mo to Sprint for their warranty plan for two years for basically nothing. Unless you're a clutz (which we all can be at times, sh*t does happen), most people I would like to think that hang around XDA take care of their phones like they are newborn babies (that is, we'll hold them ever so gently but will throw them in a fighter jet traveling 1000000mph).
In any event OP, I would guess the problem is with your digitizer, since that is what makes the magic happen and produce our images. You could try taking your phone apart to see if by some miracle the ribbon was knocked loose. Otherwise, might need a new digitizer.