Optimus 4x HD p880 soft key issue

I have an issue and I was wondering if any1 could help.. I've been replacing digitizer on LG 4x hd. After that, soft keys stopped working. Now I have a question, are they located on digitizer itself, so the new digitizer is defective, or I screwed up something under it? Thank you for all the answers

via Welcome to gsm-tips http://ift.tt/1D40Hxg