Chosen Solution

Hello guys.I have 30 broken iphone screens. I came across different websites which buys back those broken screens. How to i check if the screens are original? Do i really have to attach them to a working phone for each screen? And how do i see the difference from iphone X, XR and XS screens?Is there a device in which the screens quickly can be attached to? Like the device which can copy and paste the data from original screens, to make true tone work.

Normally you can see it to look at the backside on the metal plate, Original iphone screens have a small water damage indicator sticker on it.