Imagine having to use your phone without the use of your home button on the Galaxy S7. Most would say it would be an annoying experience. But if this is what you are dealing with, there is an inexpensive part that lies between you and a perfectly-working phone. This home button and flex cable is what electronically communicates with the rest of the phone that the home button has been pressed. If this part turns out to be the issue, save your money by installing this replacement rather than buying a new phone.