Lg G3 stylus touch screen unresponsive.

A

AC Question

The touch screen has gone mad. I cannot scroll properly. I can't press anything after a while. Its a difficult task just unlocking the phone. The topmost sensor had already been dead for the past 6 months. While switching home screens, it gets stuck in between. It works fine for a few seconds after locking and unlocking it. Sliding finger up and down zooms the screen in and out but doesn't scroll. Tried a soft reset and factory reset. Please give suggestions.