[Q] pressure marks on screen - Milestone 2 General

Hi,
Sliding out keyboard causes pressure marks on screen (attached video). Is it dangerous? I noticed this some time after getting back my phone from the waranty service, they replaced front panel and lcd flex. Can it be reason of this issue?
http://www.youtube.com/watch?v=_aSKi3yBIiM

The max damage you can cause to your device is, in my opinion, some dead pixels, but no, this is not the regular behavior of the MS2 slider keyboard

Related

Faulty backlight (hardware problem)

I recently dropped my MDA Pro and smashed the screen. Well, all the pixels still work, as does the touch sensitivity, but the backlight only works on maybe 60% of the pixels. ie, with the backlight off (in bright sunlight) there's no apparent damage. Is this a total screen replacement job or might there be a pikier remedy?
It sounds like hardware damage. A software most likely will not be able to help.
I'm in no doubt that it's hardware damage, but being utterly ignorant (or worse: partially ignorant, a little knowledge is a dangerous thing) as to how LCDs work, I was wondering if it could be fixed without having to replace the whole screen. ie, as I see it, the screen consists of the LCD (the pixels), the backlight and the passive touch sensitivity system. Well, it's only the backlight (the simplest of the three?) that's faulty. Or should I retire the old MDA Pro to being the handset I take to the beach (instead of the SPV) or use it as a wifi webcam or some sort of server?

[Q] Why do you suppose the touch screen suddenly fails?

Yeah, touch screen is no longer responsive. No physical damages or falls...no water damage. Just curious, why do you suppose? Buttons work fine.
Does the display have a ghosting effect when it goes into standby?
No ghosting...just no response

[Q] htc hd2 screen

well my htc hd2 is using android and using it a year by now and notice that the upper left of the screen is not working?is it the lcd or digitizer or just need to align it?i dropped this many times(up to 5 times i think)but no damage on the housing and it looks new,and it is annoying in some games cause it wont work and i notice a very little red dot on that part.....pls help
If you lost sensitivity and the screen does not respond to touch, then it's a digitizer, if picture is distorted or, as you describe, a red dot appeared where it shouldn't be - LCD, sounds like both in your case. I am not quite sure how it doesn't work in games or whether the problem is present in normal screens. Alignment is a procedure to tune and correct mistakes in touch recognition or to make touch more precise on resistive screens.
I suggest replacement of your LCD + DIGITIZER. Dropping it many times may have caused it too, even if housing looks perfect.

[Q] Nexus 4 Ghost Touch Workaround Idea

Now I know this problem has been asked before but after some extensive searches I can see there are no clean fixes for this.
My Nexus 4 (Android 5.0.2 LiquidSmooth ROM) has started showing ghost touches at the bottom part of the screen. I know there are a lot of explanations available such as digitizer not working, battery being too old etc. But I'm not interested in these hardware issues/fixes.
I have isolated the area of effect as the bottom ~160 pixel height of the device. I then proceeded to use the ADB shell command
wm overscan 0,0,0,160
which removed that portion from the UI. This fixed the effects these phantom touches have on the apps or UI. But a problem still remains that these ghost touches happen in too many numbers and this leaves other usable areas of the screen insensitive to touch. I am guessing this is due to the multi touch limit being reached in that bottom unused part itself. Multi touch testing apps dont pick up touches on the top part of the screen
So my question is, is it possible to remove a part of the screen from the System itself? Ideally a thick black bar of unused area, leaving me with a shorter yet fully working screen? Or atleast is it possible to turn off touch response in that lower part of the screen so that it doesnt max out the multi touch limit?
My Nexus 4's is same too
I think, that ghost touch will work from Screen Digitizer. My Nexus 4's screen digitizer was non-LG's digitizer, it was fake. I need to change that digitizer
I workaround this issue avoid using undervoling in the kernel, and avoid lower temperatures in phone, yes as you read ... this issue give my crazy when my phone was to hot and I tried to cold my phone using one ice cube in screen and back, the temperature of the phone down but ghost touches appears again, so played some videos to warm the phone again and dissapear again.
Don't ask me about how it works, or relation with screen, digitizer or battery, I don't understand but help me to workaround the issue.

Screen replaced in unauthorized service

After screen replacment (screen+digitizer) in unauthorized service when I touch screen with a small pressing force on screen I can se little discoloration (like this when You touch monitor screen). It is normal in replaced screen?
That should never happen unless the glass is actually touching the screen or it is software-related, although I have never seen a ROM do that.
that's completely normal imo.. I had 2 G2s all of them had that issue. and my friend's g3 also has that.. in my instance it's not discoloring the screen.. it's like a small transparent ripple effect.. may be you have a different issue ?
My g2 with the original screen has a slight ripple when you press on it firmly. Probably all of them do... including your old one, but you didn't notice it. Now you're being hyper critical because you got it replaced at a 2nd rate place. If the color and touch accuracy/sensitivity is good then don't worry about it.
I'm not pro, but this never happend with screens that I replaced.

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