iPhone 7 screen repairs not possible? Home Button issue?

I run a repair shop. I have worked on 2 iPhone 7's. Each time the original home button will not work on the replacement screen, HOWEVER, if I put the original button back on the original "broken" screen the home button begins to work again. Some how the phone is recognizing that a replacement screen has been installed and disables the original home button. On all previous iPhone the original home button will work on new screens, but not in the case of iPhone 7's.

I have suspended all iPhone 7 repairs at my shop until I can get a clear answer to this problem.

Anyone else experience this? Maybe this is something ifixit should investigate. Could be this be another variation on error 53?

John K

Owner

www.the-screen-savers.com