Broken digitzer (HW Design Fault?) - G2 Q&A, Help & Troubleshooting

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The band is easily visible. It explains my problem. The rest of the touchscreen works fine.
Only noticed over the past week or so that typing on the keyboard in certain spots while in landscape causes two keys to always be hit instead of one.
I remember reading a thread earlier were people had many problems with the touchscreen. Should I ask the warranty service for an s4 or 2013 moto x instead? I don't want this happening again.
Edit:
Them seems to explain it PERFECTLY:
REAVER117 said:
I've had this issue happen to two LG G2s, if you look at the dead band it seems to line up perfectly with the power button on the back of the phone. It seems to me that pressing the power button is putting force on the digitizer from the back and 'killing' that section of the touchscreen. I've swapped the entire internals of a phone to a new digitizer that did not exhibit the issues so I don't see how it could be software related.
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I'm not getting another G2.

Related

Rebuilt phone, now the keyboard isn't working

My phone got wet, so I stripped it down and dried it out. Put it all back together and it's been working fine apart from the keyboard now does nothing when I slide it out - screen doesn't go into landscape and the keys don't do anything.
Does anyone understand how the keyboard slide talks to the phone, ie how can I troubleshoot the problem?
Thanks
patp said:
My phone got wet, so I stripped it down and dried it out. Put it all back together and it's been working fine apart from the keyboard now does nothing when I slide it out - screen doesn't go into landscape and the keys don't do anything.
Does anyone understand how the keyboard slide talks to the phone, ie how can I troubleshoot the problem?
Thanks
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Sounds like the keyboard connector is loose. And of course the sliding mechanism magnet switch is connected through the keyboard multicable. So the two things are related.
The Source of your problem I think:
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Just inside the back casing, so no major dismantling needed.
Just for info:
Mike

All is lost...

My TouchDual has just lost all touch sensitivity.
Theres no responds whatsoever(Only the hardware keys work).
So what now?
Is there a others that have had the same problem?
Theres a part of the screen, that started to lose sensitivity.
And now sadly the whole screen stop responding.
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A copy-paste: You can get a new screen here for $60,- http://cnn.cn/shop/touch-dual-p-2277.html and a nice tutorial that shows how to take your dual apart: http://www.pdacenter.ru/razborka/razbor_htc_touch_dual/
You need only new touchscreen.
It's more cheaper than whole display.
Those are attached to eachother, i guess you can't buy a seperate touchscreen
man send it to HTC for repairs... i have a pharos that had the same problem... took 3 weeks and my touchscreen works again..
you need a 'digitiser' or 'digitizer', it isn't attached to the LCD, it's seperate
try emailing: http://myworld.ebay.co.uk/easyworldwidetrading/
Thanks for the replays.
I dunno what kind of magic/bruteforce, that got my dual working again.
But at the moment my touchscreen is working again.
Tho it still looks messed up(The LCD is fine and looks perfect).
And sometime next month i´m buying a Touch Pro.
So until then i don't want to mess whit the phone.
Maybe i´ll send it for repairs(warranty), and see if they will repair it for free.
I got a new digitizer off ebay, and some tools from www.mobilefun.co.uk.
I have just assembled my Niki, and it works.
Thanks so much for the help.

Weird lines on screen

Well, it started yesterday and it keeps driving me nuts. It's present both in the system as well as 4ext or even the splash screen so it is definitely a hardware issue. Is there any way to get rid of them because my contract ends in november but I was going to stay with my DHD and get myself a PS3 (very nice offer from my carrier)
It looks like that, it's not a screenshot but it looks exactly like that:
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what seems to be an officer problem?
the faint horizontal lines on the screen. That is only a picture but live they also flicker.
You could try replacing the screen yourself, but it could happen that the gpu is the problem, in which case you can't do anything on your own...
Sent from my Desire HD using xda app-developers app
I remember having the same issue right after I bought my DHD and I remember rooting and reflashing it helped I recently changed my Radio software, you think it might have anything to do?
It's not hardware. I get it on the current versions of the 3 kernel. Synergy said it was to do with fb (not sure what it is) and he's working on it.
http://forum.xda-developers.com/showthread.php?p=30407780
FB....hmmm....frame buffer (only thing that comes to mind except FaceBook) Anyway you're a life saviour man! I was worried that I will have to get a new phone.

Does your Lenovo Tab 4 10 Plus have this touchscreen issue?

Hi, I have a Lenovo Tab 4 10 Plus (TB-X704L), latest firmware:
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I noticed a bad touchscreen behaviour when I tap or swipe in the top area (near the top edge - where there are the 2 speakers). If I try to draw a line slowly, it often results in a dotted or strange zig-zag line. This means that, for example, when I scroll a pdf i get a very uncomfortable behaviour. I made ad ad example:
(I also wrote here to receive feedbacks, with no luck.)
It happens with every kind of app.
I tried factory reset and wipe cache, but the problem remained, so i contacted Lenovo assistance. I received (after a month) my tablet from under warranty repair service. They changed my screen with a new one, they wrota "changer screen and passed gerenal testing" but the problem is still here.
Do you also notice that problem? Did you solve it in any way?
Please, answer also if you don't have the problem so i can establish if this is a faulty device or not.
Thank you very much.

S7 Edge SM-G935F Touchscreen issues after replacing LCD+frame combo

Hi guys,
I was hoping someone here could help me with my issue on my S7 Edge SM-G935F.
After replacing the LCD + frame combo (meaning I transferred motherboard, camera, battery, etc. to the new frame), I've been having issues with the touchscreen where fast typing on the keyboard would cause ghost taps
If I were to repeatedly press Q on the keyboard with one thumb and p with my other thumb, the device would think that the tap was somewhere in the middle say letter t or y. Sometimes it would jump all over the place.
To better explain the problem, I've attached a couple of GIFs:
This one when typing on the keyboard
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This is using an app called Touch Screen Test
Links to the fill video recording:
https://drive.google.com/open?id=15_8w3xj6l9JUQK-IlwE2Vf9S6ADEKs62
https://drive.google.com/open?id=15XAb76irRm9m6e_RwawX7b5xy7X2-ul5
A bit of history about my phone, when I purchased it, the model was originally SM-G935FD.
After replacing the battery, it got water damaged since it lost its water resistance. I then had to replace the motherboard (SM-G935F) and everything was fine for some time until pink lines appeared on the screen.
I then decided to replace the LCD which came with the frame and this is when the issue started to happen.
I hope someone here can help, I'd really appreciate it!
Cheers!

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