I found a work-around for the touch not working when replacing the screen on the Z3. When I replaced mine the touch didn't work and the digitizer was acting crazy. I was devastated because I only needed to get to my google authenticator app. Everything online said I would have to factory reset after everything else failed. Then I started to remove the new screen and as I lifted the screen and put tension on the ribbon cable the screen displayed perfect picture as intended, but the touch still didn't work. If I let the ribbon cable get slack and lose tension the screen would act crazy again. So what I did was order a OTG adapter for less than 5 dollars, used that to plug in a mouse to the phone and so the phone would recognize inputs. After pluging the OTG Cable and the mouse in, I lifted the screen very carefully until it displayed picture again and held that spot until I retrieved what I needed from the phone. Now I can factory reset it and it should work fine. Kinda janky but it worked.