Hello, just to let you know how.. My Home button on my iPhone 6S cracked, and I needed to buy another one. I got one from eBay, for around 5$. Have installed it, and its working just fine. Except Touch ID. I tried with restore in DFU mode, as some users here suggested, but had no luck to get Touch ID to work. Maybe its possible just with original home button from Apple. If someone found the way to get Touch ID to work after home button replacement, please let me know.