Why Does My Screen Look Glitchy When I Move?

Your screen is like a flip book that draws pictures super fast. But it doesn't draw all at once. It draws from top to bottom, line by line.

When you move your head or the phone quickly, your eyes catch the screen in different stages of drawing. One moment the top is fresh, and the next moment the bottom just started.

This makes straight lines look bent or wobbly, like looking at a mirror while riding on a bus. It is not broken! It is just working too fast for your eyes to track smoothly.