When I'm touching my screen with two fingers, and the fingers are lined up, if one finger is moving up, the other touch input(which my finger is resting on)will slightly move down and vice versa. You can clearly see this in the attached video below. You can imagine how frustrating this can be in an fps game when your aim is always moving slightly up and down. I don't know if this is a hardware issue or a feature of android. I'm using a Samsung Galaxy A52s.
