Well imagine you have a broken screen, most likely the available part is with the frame, it can be original, used or aftermarket. Then you follow this guide to remove parts and install those in the new frame. But if you buy a screen without the frame, then the steps are different, but you need to find proper glue to install the screen on the frame and also clean the frame properly. But full originals never comes without the frame. So you know this guide is a reference on how to do it.
