Hi everybody,
I have a somewhat reversed question. I recently broke my screen, and ordered a new digitaliser + LCD screen from AliExpress. The thing works perfectly and looks marvelous, and before mounting it I decided to test it and the digitiser and screen worked perfectly fine. Now, I glued the new screen to the chassis and booted the phone and it seems that half of the screen refuses to work. The top half works, the lower part doesn't and the soft buttons work again. According to the different fora I searched on for more information, this might be a software issue (since the digitiser worked perfectly fine before). When I attached the screen the first time the phone showed this "Touchscreen firmware update in progress" thing. Seemingly, this is the calibration phase the phone goes through to fix any calibration errors.
Now, I want to force the phone to go through this phase again, but for some reason, before every time when I had the previous screen and digitiser it went through this every single time I upgraded the rom, but now it doesn't do that at all.
I reinstalled different recoverys: TWRP and CWM (no calibration phase), I reinstalled different ROMS (cyanogenmod and Paranandroid) and I installed different modems (4.1 and 4.2), none of them had the result of pushing the phone into the "touchscreen firmware update in progress" phase. Any idea or tips how I could get the phone into this process?
Thanks a lot for your help!
Related
Guys,
today I was about to make a phone call but couldnt unlock the screen. It didnt work at all so I rebooted and now cant enter the SIM lock. It has happened to me before but reflasnihg a different ROM helped. However i now press the screen it doesnt react. Ive tried to reflsh sveral ROMs but no change.
I never dropped the phone or anything like that...
can anyone help please?
I have another kind of problem with the screen. When I tried to replace the screen protector upper layer of the screen comes off (not completely) and then the touch becomes badly misaligned. I tried calibration but never success with error saying invalid calibration point, like that.
so, I think tattoo screen is not robust and prone to problems.
I managed to soleve my problem. I took the phone appart and pushed the digityzer connector (ive replaced digityzer some time ago due to scratches) more into the motherboard and now it works all fine...
Hi. I have had my Nexus 7 for quite a while now and so fdar it had worked perfectly. However today the touchscreen wouldnt work, even after many restarts. Then it suddenly started working again. I flashed back to stock and till then everything was working good again. However once I flashed a custom rom again the thouch screen got messed up and it was as if I was touching the screen when I wasnt. Does anyone know what's going on with my tablet ?
Thanks
I was mistaken when I thought it was related to software and I found the real issue. When applying pressure on the left side of the frame of the tablet, the screen will start registering touvhes on it's own. Upon using Multitouch Visualizer I noticed that after i pressed the left frame of the screen, the tablet would register touches on the far right of the screen on it's own. Is there any way I can fix this ?
Hello,
Since a few days, the touch input of my front (LCD) screen stopped working. Nothing looks damaged, the screen still displays what it is supposed to, but there is no reaction to my inputs (actions on volume and power buttons do work, as well as on the e-ink screen). Did this happen to any of you? Any suggestion on possible ways to fix it?
I should also mention that it still works by moments, like half a day working, then 2 days not responding, etc. I tried shaking it in different ways should a connector be slightly displaced, with no success: the few times it started working again came like a (good) surprise. I also had the great idea to do a factory reset, so now the phone is stuck on the Android configuration wizard, which must be done on the front screen (no possibility to use YotaMirror, apparently).
Thanks!
wicoz said:
Hello,
Since a few days, the touch input of my front (LCD) screen stopped working. Nothing looks damaged, the screen still displays what it is supposed to, but there is no reaction to my inputs (actions on volume and power buttons do work, as well as on the e-ink screen). Did this happen to any of you? Any suggestion on possible ways to fix it?
I should also mention that it still works by moments, like half a day working, then 2 days not responding, etc. I tried shaking it in different ways should a connector be slightly displaced, with no success: the few times it started working again came like a (good) surprise. I also had the great idea to do a factory reset, so now the phone is stuck on the Android configuration wizard, which must be done on the front screen (no possibility to use YotaMirror, apparently).
Thanks!
Click to expand...
Click to collapse
i recommend reflash it. possibly and more strongly recommend to flash the same version and region which was installed for example HongKong 4.4.3 baseband number .HK1.0.36a
ftp://fw.ydevices.com/YotaPhone2/Firmwares/
Actually, I forgot that the front screen was replaced several months ago (by a repairer that mistakenly changed the front screen instead of the e-ink one which was having an issue).
The factory reset didn't improve the situation, the front screen becoming "touch-insensitive" every few days. After checking how the screen connectors are supposed to be plugged (opposed to the screen), I noticed that gently tapping the phone front screen down helped to solve the issue each time it happened. A few days ago, I finally opened the phone (quite easy, there are two useful videos online) and unplugged/replugged the screen connector. It has been working fine since then.
If it happens to anybody (who would have its front screen replaced), I hope it can help!
Hi,
I own an Oneplus 2 for over a year now, in which I had to replace it's display two times . The first time I ordered a new display+digitizer assembly and replaced it myself, went great and everything worked fine. The second time was a month ago, I ordered the exact same display from the exact same seller on Ebay and did the replacement. I tested the display before assembling the Phone and it worked as it should. But an hour later when the phone was already assembled I discovered that the touch screen was completely unresponsive
After some trial and error I came to this conclusion:
the problem seems to be caused by applying a mild pressure anywhere on the bottom right quarter of the screen
the display does always respond when I hold my finger on it (with or without applying pressure) for about 4 seconds, then it sees my finger and I can swipe around (while still holding it down)
if I try the method above a few times, or let the phone rest on a desk for some time, the problem disappears and the touch screen works fine again.
So far, it looks like a hardware-issue, maybe a faulty screen or I messed something up while replacing it. But it gets weirder:
My OP2 is rooted and at the moment of replacement, it was running Lineage OS 14.1 (nightly, 2017-03-30). And when I wanted to update that to it's newest build, I realized that this whole touch screen problem doesn't exist in the TWRP recovery interface. It worked perfectly fine even when I tried to recreate the problem by applying firm pressures on every spot on the screen. So this made it look more like a software-issue, however the update of Lineage didn't resolve it and even restoring my backup of OxygenOS 3.5.6 didn't help.
I found this XDA-post about having firmware issues for the touchscreen with Android 7, but running their fix did not resolve anything either.
Right now my phone is pretty unusable since having it in my pocket is creating the problem. :crying:
Does anyone have any ideas of what the exact problem could be? Or anyone having similar issues? Why is it that there is no problem at all when booting into recovery (TWRP)?
It looks like loose connections between the display and digitizer.
After all it was a hardware issue. I disambled the phone again and after a lot of trial and error I found that there was something that came in contact with the back of the lcd that must have created a short cicuit or something. I placed a thin sheet of paper on the back of the lcd to prevent this and it all worked again! Still weird though that it didn't happen in TWRP.
Hello Everyone. What I'm about to write might be a bit tricky and complex, so thank you if you'll follow along.
Unfortunately, I dropped the phone into water couple of weeks ago (I know, how dumb...). I let it dry 3 days in rice and Silica gel. After that, I tried to boot it up and it worked, but after couple of hours the touch screen was not responding anymore. I rebooted it and worked again, but lately failed another time.
I tried to let the phone standing up for 3 days, and it worked again perfectly. But as soon as it lies flat horizontally, the touch screen stops working.
After several attempts, I figured out that there might still be water in it, which reaches the motherboard/top of the phone when it is horizontal and messes up with the screen.
However, just out of curiosity, I tried to change ROM and noticed the following:
1.MIUI Global Official: Phone works perfectly, even after lying horizontally. However, everytime something full screen is running, touch screen stops working.
2.DotOS/Lineage/AICP(unterwelt) (All based on Nougat): Phone works, but touchscreen fails after it lies flat.
3.Factory Kernel/ Voodoo: no differences.
So, do you think the problem is in the Hardware, or Software?
Do you accidentally know any good seller of LCD/Touch-screen replacements?
I'm looking forward to buy a Redmi note 4 (if I find any, since there are very few on the market and there are no redmi 4 prime anymore), so I thought this topic might be an take-off for some interesting discussions/opinions.
If you arrived here, thank you very much for your time and hope you can help me one way or another.
Best,
G.
PS: I tried all possible paths while changing ROM/Kernel (Clean and dirty flash, no/formatting data, reinstall TWRP)
In case might be useful to someone:
I opened the phone, use a hair dryer (cold air, not hot) for couple of minutes and now it's working perfectly.