Hardware key control mode, dead screen touch - G2 Q&A, Help & Troubleshooting

Hello. My LG G2 was fine, and suddenly the digitizer started acting up with dead touchscreen areas, and eventually the entire screen lights, and boots, but the Hardware key control mode appears on every startup.
I try to hard reset, but TWR shows up with no touchscreen input or hardware keys input.
Should I change my screen, and digitizer?

It's weird how I can't seem to find any info on repairing the Hardware control key mode on an LG G2 on the web, yet many people report it.
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Related

Note 4 camera orientation issue

Hello everybody.
I just bought note 4, but i found a stupid issue, the g-sensor in camera is wrong calibrated.
When i hold the phone vertically, the spot in surround mode or virtual tour shows wrong place.
P.S.
My device is new without root.
Tried other same devices, same issue. Others doesn't.
I tried sensor calibration apps. No result.
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Any idea?
It's not in the wrong place, it just wants you to hold the camera level (where the dot is).
Thanks. I know... but it must be vertically. I used this function on other devices. I think it's wrong calibration of sensors

Galaxy S4 screen one part dark issue.

One of mine Galaxy S4 screen part 3/4 turn to black. Now It just like S4 smart view, even if remove the flip cover. Top of the screen has colours, but bottom part turn to black. He restarted the phone several times but no luck.
Anyway to fix this issue?
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Enter download mode and recovery. If you only see part of the screen in both modes, the screen needs to be replaced. If not seen in either mode the GPU on the motherboard is the culprit and needs to be repaired.

Multiple pink lines on Motorola Droid Turb 2 screen

I am worried about My device which got pink lines, I don't know what happened to it. If I press about speaker then lines transparency becomes low.
Here are some main points regarding my issue.
1) Touch is working fine
2) In the start, there was a single line and after pressing the about the speaker it does not appear. but now multiple lines but they don't go away even I press ...
3) Do I need to replace LCD panel or there is some other issue ???
Can any body help me regarding my issue, I would be very thankful to you?
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I had the same issue last year, and it got worse. Luckily was just in the 1-year warranty period and had it repaired by Lenovo

Nexus 7 touch unresponsive

I have been using this device for more than 5 yrs. Recently screen rotation was not working so I tried to repair it by myself after watching some videos and forums. It was an easy process but due to my curiosity I dug into the hardware some more. During the process I mistakenly broke a piece from ZIF connector which was connected to the display. I don't know whether this could do anything to the touch. Now the touch becomes unresponsive. I am also thinking that the digitiser could be faulty but not ready to invest in a new one without knowing the real reason. Why this connector is for. Could this be the culprit? If so do I need to change the daughterboard? You can see the picture
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Is there a way to revive my phone?

I recently changed phones.
Left the s7 edge in my drawer for a few months. Came back to check on it, turned it on - stuck in boot loop out of no where. It was working fine last time I turned it off.
I tried putting it in recovery mode, then I got this screen. After a few seconds it turned off, maybe because I pressed one of the buttons, I'm not sure. Then it completely turned off and now it won't turn on at all. I tried changing for a few hours, tried pressing all combinations of buttons.
Any suggestions would be highly appreciated.
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