So you have tried those chinese “fake” home buttons? And they work with other phones, but not with this one? Have you tried other LCD? I had the same issue and it was U10 (turtle IC). I replaced that IC on home button and now it’s working.
I had the same issue and replacing a WTR1625L helped. At first I replaced the Audio IC, but it was still the same. Also L4512_RF was knocked off, but I think it was while removing the IC.
