HOW FACTORIES CATCH SCREEN DEFECTS BEFORE YOU BUY A PHONE Every phone screen looks perfect… until it isn’t. Dead pixels, uneven brightness, tiny color shifts — most people wouldn’t notice until weeks later. That’s why manufacturers use automated inspection systems. High-speed cameras and controlled lighting scan every display at multiple angles. AI compares the image to a “perfect” reference and flags even microscopic defects. Some systems even simulate real usage: Different brightness levels, d