Chosen Solution
I replaced the battery on my 7Plus but now 3D Touch doesn’t work. Touch ID and home button are fine. Any ideas?
It is possible that you may have knocked the home button connection loose, Try reconnecting it , but I would first recommend trying a hard reset by holding the sleep/wake button and the volume down until you see the Apple logo. If that doesnt fix it, make sure your battery is properly seated as well.
