Touch ID Transplant Issue

Hey all, I have recently acquired an iPhone 6 with a shattered display and functional Touch ID. Since I wanted a clear view of my screen, I replaced it with another iPhone 6 screen I had from another device laying around (I am a repair technician and the replacement screen is original, if that matters). I succeeded in transplanting both the home button and earpiece assembly to the new screen with no damage, connected all cables, yet Touch ID is unable to activate every time I reboot the device. It is jailbroken if that makes any difference, but it was jailbroken with working working Touch ID using the device’s original screen. Nothing jumps out to me in terms of corrosion or other damage to display and other connection points but I could check closer as well. Thanks in advance!!