Someone try this, Make a back up of iPhone 7, Replace the screen with a aftermarket screen, seal it up and then put it in DFU mode, let it wipe it self then restore it in DFU mode. just interested to see if it will replace the firmware and accepting the new screen and the HB as the original. I would do it but I do not have a iPhone 7 for testing.
They are from www.gluedots.com/projects. They are the 1" (2.5cm) size and come in 200pc count. Just cut them to size. I place them in the corners and in the middle of the frame along with the red tape and the iPad glass will never lift off and easy to remove for future repairs.
I have been repairing iPads, iPhones and all kinds of devices in between. In the begening, the 3M tape would not do it. Either use double sided RED TAPE which works wonders and you wont have your customers coming back saying that their iPad screen is lifting off and also whenever you repair the iPad 2,3,4 allways buy the plastic bezel plastic frame and install that first to ensure a proper fit. One more trick that i use on stubborn fits is a product called GLUE DOTS from your local Arts and Crafts (Michaels) or whatever. That works great and allows for re-entry if you mess up the first time. Never use Crazy Glue or Gorrila Glue. The Cell Phone Surgeon