Serial number cant be verified on apple coverage
I am getting one offer from a seller in classified selling iphone 12 pro max for cheaper price because the display is changed, it marked as a important message is setting/about Display is not original and when i check its serial number on apple coverage error "We’re sorry, but this is a serial number for a product that has been replaced. Please check your information and re-enter your serial number. If your information is correct" does anybody have any idea?
iPhone 12 Pro Max