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When the iPhone is made in the factory and the first LCD is installed, Apple uses a special calibration machine to calibrate the iPhone to work with the LCD. It would be fair to say that if Toshiba manufactured the LCD they would also manufacture the 3D touch panel that is attached to the LCD. This is one of the ways Apple can tell if the iPhone has ever had the LCD changed.
#Where to find serial number on iphone 7plus code
This information is also contained in the QR code on the back of the LCD and is recorded in Apple’s GSX server against the IMEI and the serial number of the device. The first three letters identify the maker of the LCD and 3D touch panel and the remaining digits are the serial- unique to that LCD. If you look at the 3D touch panel, there is a long serial code which might not look like it means anything but can be decoded to the following. Although the LCDs themselves are made to Apple’s strict specification, compatibility between iPhone devices varies greatly. There are three companies who make LCDs for the iPhone 7 and 7+ LG, Toshiba, and Sharp. Have you ever installed an original refurbished iPhone 7, 7+, 8 or 8+ LCD into your customer’s phone only to find that the touch isn’t working? Or perhaps the touch was okay when you checked it, but your customer still comes back the next day saying it has stopped working? It’s easy to blame this problem on a faulty screen, but it may not be as simple as that.ĭifferent Manufacturers- Different Calibration Settings Touch Compatibility on iPhone 7, 8 & Plus LCDs.“Error 53” Back in Disguise on iPhone 8.Distinguishing Original & Copy iPhone LCDs.ALS Problems with iPhone X & 8 Screen Replacements.