Hi all as of my experience I just want to test this issue cause because of replacement or apple software . want I did is I have my well working iPhone 7 I just open it and never replace any thing I just on the i phone in open condition suddenly the home button is not working even I close and fix the screws back. the touch id is disable totally not working. Personally my thought is because of software the lock it once you open the phone.
If you don't believe it plz try the same as what I did.