Followed this great tutorial today to replace the lightning connector (my microphone was greyed and disabled) and installed a new battery as well. Fantastic guide and everything installed and fit well. However, there are 2 issues:
1. Microphone is still disabled so can;t talk to anyone. Bluetooth works fine for calls though. So maybe that replacement was a waste of sorts.
2. Now I get the error that my Touch ID is not activated and greyed out. Can't use the Home button. Is this something Apple/iOS does if you install a 3rd party battery and lightning connector?