Why does the touchscreen of my Oneplus 5 do this? - OnePlus 5 Questions & Answers

A few days ago I went to a local phone service place to have the display on my Oneplus 5 replaced, after i dropped amd broke it. They have successfully replaced it, but it doesn't work properly... for instance the two finger media on/off gesture won't work when the screen is closed, AMOLED screen calibration doesn't do anything, and most importantly, moving two or more fingers in a specific way on the screen will make it actually connect the touch points.. I have recorded the issue, here is the video:
link removed as i apparently i can't post any because of my new account..
What might the cause of this issue be? Is the touch screen assembly improperly mounted on or busted? Is there any control unit on the motherboard of the phone that might have gone bad after dropping the phone?

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display problems

Hey there!
my friend has one of these HTC Touch, accidentally it fell on the floor when she was partying..
the display broke down... I changed the display but it works like 5 minutes and than it says that it needs to be calibrated, so we perform the calibration, but at this time I can´t even pass through the calibration. Have to do the calibration a couple of times and than it works fine again...
another time it when I tried to send some sms another calibration request came out, but this time it worked again after first recalibration..
It´s not very user friendly when you have to do the display calibration again and again....
Please any solutions??
touchscreen is probably loose because of the fall
try pushing the sides of the screen, it might snap itself in its position
yes i hadbsame problem....sometime it worjk and sometimes not.
(google translate):
not a few minutes, even the first problem, I thought the silvery on top of the screen display would be a film, it had settled a bit now, I have noticed that the touchpad is probably a way which responds to the stylus, it only reacts even if I pressures on the htc logo, otherwise, as indeed are among the contacts, how can I re-ordered or re-stick?
LCD-Screen is broken or its the motherboard (maybe it's that little strip which is connected to the LCD-screen and the motherboard or the LCD-Screen itself is broken), the digitizer is probably fine, if you've a warranty on your phone then send the phone to them and say that the phone stopped reacting on your taps (tell the story in a way that it wasn't your fault, so yes I request you to lie about the issue). If you've no warranty call your insurance and tell the story (again). If that didn't worked buy a OEM LCD-Screen and find a tutorial how to replace it (calling your insurance is the best one of all 3).
lcd replacement
yes yes... I did replace the LCD display, but nothing happened. It behaves in the same way as I wrote in the first post. Think the motherboard could be broken. I gave up on it. There was no warranty so I looked for another HTC but thx a lot to all here....
Please post in the correct forum, as your problem solved closed and moved.

Touchscreen problems (phone off local classifieds)

Recently upgraded from a Captivate. Picked up an Atrix for $240 ish off Kijiji, and after trying out in the car for a quick phone call seemed fine.
Until i got home, and realized that the screen is done.
No box just the phone and cable so not sure if i can send it in for warranty. Thus i figured i can either sell the phone for a loss and grab a much crappier phone. OR i can repair it and just use it.
So there's a certain panel at the bottom that doesn't seem to be too reactive, and doesn't register touch from time to time, as well as towards the top corners of the screen any pressure would result in random touches being registered towards the bottom of the screen - seen using touchtest app off the market today to pinpoint my touch problems.
Video illustrates my problems - sorry about quality - video taken using a piece of .... blackberry.
I figure the digitizer is seated wrong wondering if a seating is needed or a whole new one? Or if it's a different problem all together.
I figured it's more viable i just repair it, as the phone is quite fast if it weren't for the stupid screen I'd love it (also lack of case and screen protector is annoying - but I already ordered them!) .
Any advice would be great!

[Q] is the touch controlled by the digitizer only?Could I have damaged anything else?

Hi,
HISTORY:
I've had my defy screen shattered a while back and sent it to Motorola for repair (they did a terrible job at that). Ever since I got it back I can see small dust particles accumulating inside the screen. Gradually after a couple of months the top right corner became non-responsive and I left it that way for another 4 months until now!
As the warranty period was over, I thought of trying to clean the dust and see if that works. Unfortunately the connector on the touchscreen(digitizer) broke off and it stopped the touch completely.
My Question:
Is it possible that I had damaged something else(can something else be damaged?) that caused the touchscreen to cease functioning? :crying:
I can change the digitizer after buying it from ebay. But I would hate to waste any more money if this doesn't solve the issue. How likely is it that the touch functionality will be restored if I change the digitizer?
LCD is working fine, and I can use the volume rocker and power button perfectly.
P.S. please don't flame me for asking already answered question, I've been through a lot of threads before opening this one.

[Q] Touchscreen Randomly Stopped Working

Ok, so first thing's first. I've been researching this for a few days now before creating this post. The touchscreen issues I'm finding online, are similar to what I'm experiencing, but the solutions have already been done, or my phone is not responding to them. I'm making this thread to see if anyone else has experienced the same issues or has any new news before I a) return my phone to stock, b) replace the digitizer, or c) buy a new one or upgrade to the G3.
My G2 was rooted, but kept on stock ROM with only small tweaks here and there. After the latest update, I noticed my work G2 had much better reception, so I returned my phone to stock to download the update. After updating, I re-rooted the phone, this time, the only thing I changed was the keyboard which I replaced with the G3 keyboard. Everything was fine for months until about a month ago.
It started with not being able to pull down the notification shade on the right half. No biggie, but after a week or so, it got worse. While using instagram, I noticed that the confirm button was sporadically responsive. Sometimes it worked fine, other times it didn't work at all. It began to progressively get worse on an almost daily basis. I decided to see what was going on and enabled both input options in the developer options menu. I found that the entire right side, about 1/8" was not responding to touch, the area not covered by glass screen protector( i removed it later while trying to troubleshoot). The upper right area showed about a half inch block that wasn't responding (the area where the data ribbon is). I was ok with that as instagram was really the only thing I used being affected.
About a week ago, the mid left screen area started being errratic. It began to get worse and started to affect the front touch screen buttons ( the area where the other data ribbon is). I enabled the input options again and saw that I now had a good portion of my left side of the screen was unresponsive. Even though I didn't drop it, I thought maybe the data ribbons had come loose as those 2 areas are where they are. I opened and disassembled the phone and re-sat the connctions after inspecting them. I double-checked all the other connections and LDIs in case humidity was the culprit. Everything looked good. Didn't fix the problem.
I've had to set my phone to unlock by facial recognition to ensure I don't get locked out, and changed my pin to use numbers not affected. I'm going to replace the digitizer, but wanted to see if anyone else had the same issue, or knew if it was, indeed, a software issue before I spend $75 (I will be replacing the digitizer and LCD to get it working sooner rather than risk damaging the LCD while replacing the digitizer and having to wait another week). I don't want to send it in to LG because I bought it on ebay and have no proof of purchase for warranty, and I want it working sooner.
One thing I noticed that may help with diagnosing, the screen now looks different when off. Before, in direct sunlight, you could see the dotted matrix from the digitizer, and that was it. Now, I can see the retangular pattern across the entire screen. I checked my work G2 which I just received a few months ago and the rectangular pattern is only visible on the edges of the screen, the center is black with only the dotted matrix visible. Keep in mind, this is in direct sunlight. In shade, the rectangles are visible on both.
I'm hoping it's a software issue, but I'm wondering if the digitizer is starting to separate from the LCD. I don't see any acutal separation though.
Thanks for reading the book, and for any feedback. Also, because it will probably come up, I want to avoid upgrading if I can because the G3 is just a little too big.
I restored the phone to stock with the most up to date software. Still doesn't work. It appears to be a hardware issue. I really thought it was software because the dead spots word for a split second after turning on the phone. Oh well. Guess I'm going to order a new digitizer or LCD combo.

Redmi K20 Pro Screen Brightness and Ghost Touch malfunction after screen replacement

I recently replaced the screen on my K20 Pro and I noticed that there are a few malfunctions. Screen brightness suddenly goes max for a few seconds when using opening the phone from lock screen and usually when using fingerprint to unlock (I have my Auto-Brightness set to off). Ghost touches when tapping but none when swiping. I was wondering if this is a common malfunction after replacing the screen (calibration or something) or did the installation of the screen went wrong or is it because the LCD used to replace the original one was defective. Thanks for the insights.
i just replaced my screen four days ago and so far i got no problems of some sort..
so, i think it's probably the installation or the unit's fault. idk tho
I'm just annoyed by the sudden screen brightness max. To be honest I think the ghost touch thing is because of a defect LCD, but I think the brightness problem is from the system. It's like the phone does not recognize or remember the previously set brightness. I hope there's a solution for this. Do factory resetting the phone solve any brightness problems?
hello! did you managed to solve this problem? I have the same problem
if you removed foil and it still touch in random parts of screen,. then send it back. i had the same symptoms with a few screens that I repaired. just Chinese quality
yaro666 said:
if you removed foil and it still touch in random parts of screen,. then send it back. i had the same symptoms with a few screens that I repaired. just Chinese quality
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i did the replacement with not 100% compatible display...because it was way cheaper than the display I needed...(from an oppo phone) i know it sounds weird but the display was 200 dollars( the 100% compatible from oppo) and i payed like 70 for this display that flickers the bringtness..but they told me a factory reset can solve it?
what do you think?
try, but I doubt it. looks like fauly/not compatible to me.
try flashing latest miui to make sure you did everything to get it to work, if that doesn't make it better just don't waste your time. if you have more technical data on both anoled and lcd with connections described (every pin) then you could make research a d bypass if needed. otherwise send it back
vincedrian said:
I recently replaced the screen on my K20 Pro and I noticed that there are a few malfunctions. Screen brightness suddenly goes max for a few seconds when using opening the phone from lock screen and usually when using fingerprint to unlock (I have my Auto-Brightness set to off). Ghost touches when tapping but none when swiping. I was wondering if this is a common malfunction after replacing the screen (calibration or something) or did the installation of the screen went wrong or is it because the LCD used to replace the original one was defective. Thanks for the insights.
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managed to solve? I have the same problem, besides sometimes the screen seems to lose sensitivity, I saw in some groups people recommend buying parts from the dragon-tt store....I'm thinking of taking a chance....

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