Hi looking for Schematic on Touch Panel Connector to troubleshoot hardware issue

If anyone has a schematic or better yet troubleshooting/service manual for XT875 would be greatly appreciated. My touch screen isn't working even after replacement and I think it has something to do with motherboard connection and need to check voltages/pin assignments. Any help very appreciated...I have had this phone for 4 years and hope to have it for another 4...

Scott

Speakerphone microphone hardware issue

Hi!

I had my S4 (I9505) serviced a few months ago. Warranty repair, they replaced the whole mainboard. The repair took forever, and when I got the phone back, I already had purchased another one (second hand) that I liked better (Xperia Z1 compact, I liked the size), so I tested the repaired phone was working, but no more than that. A few months later when I missed my big screen and some custom ROMs I took back my I9505 and started using it with stock ROM. I soon noticed people couldn't hear me when I was on speaker phone. Then I flashed a few aosp and CM based ROMs, and realized it wasn't a software issue: it did not work on those either. And when trying to dictate something, or use voice command, the phone just doesn't "hear" anything. So the same mic must be involved in those operations, which makes sense since it is when you speak from further away from your phone.
Unfortunately, months have passed since the repair and the phone is no longer under warranty.
I started investigating a little bit, and it seems there are two microphones on the phone. The regular one works well but the other one not at all. So, here are my questions:

1. Is the second microphone located on the top of the phone, next to the headphone jack? If anyone has a diagram or picture of the board with the second microphone marked, I'd be happy to see it :)
2. How is that second mic connected to the board? Is it a cable, a contact or is it welded? Or is it integrated on the board?
3. If it is a part that can be replaced, where can it be purchased?
4. Anyone has had the same issue? If so, could you solve it?

Thanks in advance!

Cheers!

Fa

Switch position of Hardware Buttons

Hi,

today i have got my Zuk Z1 and it is a very nice phone, also got 2 OTAs.

Now i wonder if i can switch the position of the hardware buttons.
Currently left side is "menu key" and right side is "back key", i would like to have it the other way around.... Left side should be "back key".

So far i did not find and option for it.

Hardware and software keys

I know it may be stupid but I want to test something. So is it possible to get hardware and on screen buttons working at the same time on rom like cyanogenmod 12.1 where is no option in settings to choose that? I found some old forum thread where was told to edit build.prop file but I tried it and I got only lights on hardware keys but buttons doesnt work.

Hardware root

Evening Guys,

I was wondering if the hardware root was usable on every firmware even : 51.1.6.3_516012020

Thanks in advance

Silent timer and similar apps doesn't work - hardware button responsible?

I tried using silent timer apps on my OP2 (rooted, oxygen 2.1) but they don't seem to be working (to automatically enable/disable silent mode at specific time). Is it due to hardware notification button or lollipop? Those app used to work fine on my previous phone running kitkat.

Is there any solution for this?

PS: Seems I've posted in wrong section, but can't find anyway to move or delete it. Mods, a little help please?