Ive got an iphone 6S which had a smashed screen. It had a new aftermarket screen put on and the finger print sensor worked fine. The screen though was not the best of fits and got damaged when put on. Got another screen and put it on but FPS wouldnt work (unable to activate touch ID). So i tried another new one and still wouldnt work. I had an old cracked aftermarket screen used to for testing phones and the FPS works fine. Ive tried 3 other new OEM screens but the FPS wont work on. So ive got a white cracked screen with the original black home button all working fine, but cannot find another new screen that works with the original home button. Has anyone else had this issue?. Any help would be appreciated. Many thanks, Gary.