Thank you for this fantastic guide! After I performed this repair (screen+LCD replacement on Xperia Z3 compact), everything seems to work on my phone except for two things: when I make a phone call people can't hear me and I can't hear them. If I make the call via Skype or Google Hangouts then voice transmission works both ways. It appears that I have disconnected something specific to voice calls during the repair. Thanks for letting me know if you think of a fix!