iPhone 7 home button is not replaceable—you will lose BOTH home button function and touch ID. However, you can plug in one of the headphone jack/home button dongles and that will work for home button, or you can get a new screen at Apple which will come with a new home button paired to the device, or you can try out a new chinese product that is a new charge port that WILL allow a replacement home button to work just for home button function. (Although these things are probably sketchy and word on the street is that they have other problems)