Touch ID won't work after battery replacement
After replacing the battery, I get a message Touch ID wont’ work and it doesn’t work. Tested before sealing up with the adhesive. Any hints, my wife hates me now.
did you check if you have damaged the touch ID ribbon cable by accident.
It appears you have damaged the flex cable for the Home Button, does the button still work? On the 7, it is a Taptic button, so chances are if the home button no longer functions you have lost Touch ID, and only Apple can fix this. (Replace the phone) .
While replacing battery not any problem appear.There is possible reason for that.
1-While open screen might be Home button flex tear.
2-Home button flex connector might be broken pin or not connected properly.
3-Long screw over battery covering metal frame may cause issues.
See this on your phone clearly that you got the solution.