Original post by: meh ,
Touchscreen becomes erratic after a while
I have an iPhone 5S which screen becomes erratic (top part not responding to touch, sliding gestures not recognized) after a while. I've been able to make it happen by running 10 geekbench 3 tests in a row. I know the display assembly has been replaced, and I'm not sure it's genuine. Problem has been present at least since the screen was replaced.