Home button not working

so my iPhone 7 had a cracked screen so I bought an ICloud locked 7 with a good screen to fix mine with, both phones home buttons functioned perfectly fine before the repair, I took the home button original to my iPhone and put it into the replacement screen, and the home function nor the Touch ID is working, I have completely taken apart the home button assembly and put it back together, I have even tried both home buttons and they don’t work, I have also carefully inspected the cables but none have any visible damage, I don’t know what else to do so I’m asking this community