So what do the codes do for Apple? They save the company money and anything that can save the tech giant some cash is going to be implemented in the production process. The codes help Apple track exactly how many glass cover units have been produced by its suppliers, Lens Technology and Biel Crystal, and how many were defective. It seems that the latter two suppliers have tried to hide from Apple the true number of defective screens manufactured. A large number of defective screens produced could raise Apple’s production costs significantly.
There are two microscopic QR codes on iPhone 15 series displays
Before implementing the microscopic QR codes to track iPhone screens, three out of every 10 displays had to be discarded costing Apple hundreds of millions of dollars. Now, that number has been reduced to just one defect out of every 10 pieces saving Apple huge amounts of money each year. Apple still obtains the raw glass material from Corning, but that glass is shipped to Lens Technology and Biel Crystal to be shaped. And Apple can use the microscopic QR codes to keep both firms honest.