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I am an iPhone reseller that is willing to start refurbishing iPhones devices for faster sales, I came across some automatic polishing machine that remove scratches from phone lcd, I want to seek opinion of tech experts about this, Does this machine really help in cleaning screen to make it look new ?
Depends upon the starting condition of the screen. If the scratches are too deep (as a guideline, if it can be caught by dragging your fingernail across the screen), polishing may lessen, but will not eliminate them. But for light scratches it can definitely help to improve the cosmetic appearance of glass surfaces. Note that on 12/13 series (and I assume future iPhones), they have a Ceramic Shield coating on the screen that polishing will remove.
