I've changed screen and after sometimes phone goes crazy - Xiaomi Mi 8 Questions & Answers

Hi mates, I need you help and suggestons,
unfortunately my phone felt down and I needed to change screen, the service which installed it asked me to choose one of the available (chinese) screens I I select the most expensive one. In the beginning all was ok, but time by time (about 1,5months) the usage gests worst, when the screen start to be a bit dirty it start recognize touches anywhere (moslty in the up side of screen), itself does commands, it's not possible to do nothing. WHen this happens I need to keep press the power button for 10 seconds tille ht ephone reboots, after reboot all become regular.
My considerations:
1) it doesn't seams a defective screen or a bad assembly, because after reboot all is good, if there were such problems a simple reboot can't fix them.
2) it looks like an incompatibility between OS and the touchscreen firmware, and probably it's something Xiaomi does with intention to create problems for cloned spare parts. Maybe the OS is "instructing" the touch screen controller how much sensibility to use, how much it can be dirty, etc.etc? the protocol of the latest OS isn't at all compatible with the cloned device and it result on crash of functioning. A reboot solves the problem.
If that is right, will a ROM update to another OS (not IMOU, as I have now) can fix the problem? Or there is any app that can perform a touch screen reset? Or any other trick to solve my problem? Than you for answers

Hi mates I need help, with cold weather coming it got crazy as soon it feels cold. WHat can I do to solve problem?
Updating ROM to a non official can solve it? The display isn't broken! A reboot fixes always the problem..

It is not original screen from xiaomi vendors, just a oem part with lower quality (chinese sell it alot on aliexpress with many type amoled, oled and LCD panel too).
Ghost touch easy happen on oem screen no matter how expensive it is.

Thank you for your kind answer, this is a really big issue.. it's very annoying using the phone like that, I've noticed it suddelny starts when the phone is exposed to cold temperature: lowering the screen temperature quite suddenly means it goes crazy, when it's crazy the only way to fix the proble is reboot the phone, with reboot it calibrates again and works ok, till next event. MY question are:
1) Can I forse myself a calibration?
2) Does other ROMs, not MUI, manage and fix this problem? (using another touch driver may solve the problem, chances are MUI introduced updates and become more selective to work with only original displays, to disancurage the OEM parts, so using another ROM wuth an older driver may solve the problem)
3) If I buy and add a protective glass on display, does it behave better?
Your experience is essential for me, thank you for posting!

Barabba11 said:
Thank you for your kind answer, this is a really big issue.. it's very annoying using the phone like that, I've noticed it suddelny starts when the phone is exposed to cold temperature: lowering the screen temperature quite suddenly means it goes crazy, when it's crazy the only way to fix the proble is reboot the phone, with reboot it calibrates again and works ok, till next event. MY question are:
1) Can I forse myself a calibration?
2) Does other ROMs, not MUI, manage and fix this problem? (using another touch driver may solve the problem, chances are MUI introduced updates and become more selective to work with only original displays, to disancurage the OEM parts, so using another ROM wuth an older driver may solve the problem)
3) If I buy and add a protective glass on display, does it behave better?
Your experience is essential for me, thank you for posting!
Click to expand...
Click to collapse
imo
1. you can not
2. Roml sorfware can not
3. Protective glass make lower touch experience.
- Not all oem part come with defect, some working fine, it is just random.
- To repair you need replace new one, or buy original screen for sure.

Thanks for answer, I do believe that the problem can be managed by drivers, "resettig" the touch chip wil correct the problem. Probably the defect is on the firmware of the touch panel, it gots errors from touch.. ok, but it doesn't understand it's just revealing mre and more ghost touches. These FW have the task to filter out the ghost,, maybe they don't do it well.
A second chance is the comuinication between this chip and the MUI OS, the connection goes broken by some mistakes, "unalligned" and MUI got any touch position from nothing.
I don't believe the screen is defective, because after reboot it works perfectly, thil the next strong environment conditions change..
What is Roml software?

Related

[Q] Screen inaccuracy issues

I know that this has been a fairly common complaint about the Nexus One but i'm wondering, roughly what percentage of people actually have this issue? To clarify, i mean the problem whereby touching the screen in one place is actually registering elsewhere on the screen.
I've had this problem since buying my n1 and having to constantly turn the screen off and back on again was driving me nuts. Finally i sent the unit back to Vodafone for repair and they in turn sent it to HTC to be fixed. So yesterday i got it back with an enclosed statement along the lines of "we have fixed your fault etc..".
Three minutes into using the damn thing and the fault crops up again. So much for that! To be fair to Vodafone they are sending out a replacement unit now but of course i'm concerned that even that will have the same issue.
What are the odds?
Here is the same.
To developers: the fact that resetting the screen fix the problem makes me to ask if there isn't a way to make the screen re-calibrate itself every X seconds/minutes, without shut off and on the screen every time. Seems to be until now the only solution to this extremely annoying issue.
It really is a bizarre one. I've seen people discussing whether it's a hardware or software issue but nobody seems to have a definitive answer. If it were a hardware problem, surely it would be constant/permanent? If it's a software issue i would have thought that somebody would have bug-fixed it by now? Especially as it seems so prevailant.
I'm stumped!
Other than this one problem though i am completely in love with this phone. The device itself feels solid, durable and pleasant to use. Android is improving all the time and it always impresses when you demonstrate to the un-initiated what the device is capable of. So close to perfect...but not quite!
EDIT... This from the wiki.. "- Q5: Sometimes my screen registers touches in incorrect places, and I need to turn the phone off and on to make it work correctly again
A: This is a hardware problem, nothing can be done about it. Nexus One's digitizer sucks.
Ho-Hum.
I have experienced this problem on android 2.1 ever since upgrading 2.2/2.2.1, I haven't had the problem. I'm very happy with my screen
Sent from my Nexus One using XDA App
msavic6 said:
I have experienced this problem on android 2.1 ever since upgrading 2.2/2.2.1, I haven't had the problem. I'm very happy with my screen
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
That suggests a software problem although i have had it on 2.1, 2.2 and now 2.2.1. I would say that it has happened to me within three minutes of using the phone, 50% of the time within that three minute window. In other words it's cropped up in half the texts/emails i have sent where i have had to do the screen off/on thing to complete the message.
Very annoying.
It has to do mostly with the way people hold their phones, the possibility of registering false touches - including, for example, touching the screen with fingers that aren't completely dry. Some have the issue more than others.
HW issues still can have SW workarounds sometimes. I'm not sure if it's the case. HW and SW need to be analyzed to find one, if exists.
There is no "calibrating" capacitive touchscreen. Resetting its controller might have effects like missing touches and other random screen misbehavior (for example - if the controller is tracking fingers, resetting it would cause it to lose the tracking).
Since getting my phone back from 'repair' the issue is less frequent, suggesting that it's not a usage problem as i'm obviously still using the phone in the same manner as before. Instead it seems that various devices suffer from the problem in varying degrees.
I suppose if i knew what they had actually done to the phone while it was being tended to it might help us discover why the frequency of the problem has been reduced. I know that the digitizer wasn't replaced as the phone came back with the same screen protector on it as it had when i sent it off. That being said, they obviously did something. I just don't know what!
Most probably replaced the phone's MB.
Try upgrading to the latest radio - the issue will probably not be 100% solved, but now I only get it maybe once a month or so...
I may tell them not to bother sending out a replacement. It's happening far less often since it was returned and (going by the poll results), there's a good chance that the replacement could actually be worse than this one is now.
Perhaps the 2.3 update will jar something loose.
ATTENTION PLEASE!!
after flashing miui latest ROM i've never had touchscreen issues anymore in over 20 hours of hard usage (also with the phone in charge!!).
I don't believe is a coincidence, developers please ask miui developers if they have integrated a code to fix this issues.
Thanks!
Sent from my Nexus One using XDA App
pyngwie said:
ATTENTION PLEASE!!
after flashing miui latest ROM i've never had touchscreen issues anymore in over 20 hours of hard usage (also with the phone in charge!!).
I don't believe is a coincidence, developers please ask miui developers if they have integrated a code to fix this issues.
Thanks!
Sent from my Nexus One using XDA App
Click to expand...
Click to collapse
could you please download Multitouch Visible Test
http://www.appbrain.com/app/multitouch-visible-test/com.batterypoweredgames.mtvistest
and report back?
xyellx said:
could you please download Multitouch Visible Test
http://www.appbrain.com/app/multitouch-visible-test/com.batterypoweredgames.mtvistest
and report back?
Click to expand...
Click to collapse
I have already restored cyano 6.1.1.
However, about "multitouch issues" I mean inaccuracy, the fact that the touch is recognised in another point of the screen (particularly when you press the bottom part of the panel). I didn't verified the axes-inversion issue, but I'm almost sure that it persists.
The "touch inaccuracy" is nothing else than the usual axis-swapping thing. When accidental dual touches (palm/holding fingers/water/etc) happen, the digitizer goes nuts.
Jack_R1 said:
The "touch inaccuracy" is nothing else than the usual axis-swapping thing. When accidental dual touches (palm/holding fingers/water/etc) happen, the digitizer goes nuts.
Click to expand...
Click to collapse
I don't think so....I pay attentions when the screen goes crazy. I'm absolutely sure that (in charge for example) my touch is ONE.
The only times I was able to trigger the "screen nuts" effect, were when I was typing 2-fingered, and fast - making it register dual touches. Moreover, sometimes a single touch with a single finger is reported as series of touches. Once it happens, it stays until screen off.
Jack_R1 said:
Moreover, sometimes a single touch with a single finger is reported as series of touches. Once it happens, it stays until screen off.
Click to expand...
Click to collapse
I mean this....since I moved to MIUI this is not happened anymore.
Since I uninstalled Htcime the inaccuracy issues seem less so far! Almost only with the phone under charge ...much much better than before! Dunno why....
Sent from my Nexus One using XDA App

[Q] Htc one m7 screen problem

Part of my m7 touch screen isnt working .. its kinda crazy cuz the phone never got dropped .. i saw that many people had that problem its between this two parts of screen that doesnt work theres a line that working..sometimes the touch isnt working at all !!
(when people call me sometimes).
its really disappointing cuz i like htc very much !
another problem that im having and saw that many people has it too : screen brightness always go maximum ! auto off for sure but still the brightness making problem tryed to reset the phone didnt help( not hard reset) it sucks to have a bunch of problems in a new phone ..
please please help me !
post.img.org/image/6naksobvx/
delete the dot in postimage ! sorry but this photo will help you understand and i have to share it !
Areas of the screen not registering touch input in most cases is a hardware issue with the digitizer. Loose digitizer connector may cause similar issues, but the only way to check is to open the phone. Opening is not easy and there is a high risk to damage the body. If you decide to go this way, my suggestion is to get new front and back panels + screen kit and to transplant the rest into the new housing. It's also a good time to replace a worn battery or a faulty camera module.
Val D. said:
Areas of the screen not registering touch input in most cases is a hardware issue with the digitizer. Loose digitizer connector may cause similar issues, but the only way to check is to open the phone. Opening is not easy and there is a high risk to damage the body. If you decide to go this way, my suggestion is to get new front and back panels + screen kit and to transplant the rest into the new housing. It's also a good time to replace a worn battery or a faulty camera module.
Click to expand...
Click to collapse
some times the screen back to full funcanlity
and please help about the other problem with the brightness .. its look like one of the sensors is broken in the phone .. maybe its the problem ?
When Auto Brightness is set to Off, the phone is not using the light sensor.
You'll have better chance to get help if you provide some basic information about your phone:
- What OS version? (KK, LP, stock, custom)
- Was the phone factory reset after the last OS update? (highly recommended)
- Do you use any applications that control screen brightness? (like some picture viewers, barcode display apps, etc.)
You may fix the brightness issue (most likely software related), but non working digitizer on parts of the screen is hardware related and no app will fix this.
Val D. said:
When Auto Brightness is set to Off, the phone is not using the light sensor.
You'll have better chance to get help if you provide some basic information about your phone:
- What OS version? (KK, LP, stock, custom)
- Was the phone factory reset after the last OS update? (highly recommended)
- Do you use any applications that control screen brightness? (like some picture viewers, barcode display apps, etc.)
You may fix the brightness issue (most likely software related), but non working digitizer on parts of the screen is hardware related and no app will fix this.
Click to expand...
Click to collapse
lollipop not root and other .. i deleted everything , did a soft reset not the hard type . no but i download lux to see if its help and it doesnt help either
The only thing left to try on a software side is factory reset the device. Many users report it clears various OTA Lollipop update bugs. The process takes about 10-15min, the OS will go through Android system update process again and the device will be reset to factory default state (don't forget to backup all your data). During the initial setup process don't restore your online account backup, make clean setup. Test the screen and digitizer before installing any 3rd party apps. Make sure your screen protector (if you have one) is not bugging the digitizer. If you have the same issues, then it's definitely hardware related (screen/digitizer assembly or connecting ribbon cables).

Sony Xperia Z1 problem with the Battery, Touchscreen and Overheating

Hello guys, how're you doing?
My Sony Xperia z1 started making me mad due to several problems.
PS: I'm running android 5.1.
1- Erratic touchscreen:
the touchscreen sometimes starts moving things (open app or notification bar etc...) without touching it
2- Battery
sometimes the battery drop by 10% or 15% randomly
3- Overheating:
my phone became hot after 2 minutes or using the camera!
so, I'm wondering if someone could help me fix one of those problems
sorry for my bad english
Thank in advance
ok, the camera overheating is normal if you're using it for long time, the battery may be for time of use this phone is 4 years old and battery begin to fail try some app to calibrate it if doesn't work replace it and screen touch have you change the screen? if change try to put a black wallpaper and test if the problem persist when you go to home( in developer options check the "show inputs" option and check), and try a stock rom to verify if problems remains.
itemmaster said:
ok, the camera overheating is normal if you're using it for long time, the battery may be for time of use this phone is 4 years old and battery begin to fail try some app to calibrate it if doesn't work replace it and screen touch have you change the screen? if change try to put a black wallpaper and test if the problem persist when you go to home( in developer options check the "show inputs" option and check), and try a stock rom to verify if problems remains.
Click to expand...
Click to collapse
thank you for the reply bro!
1- The battery is JUST 2 years old!
2- My friend's Z1 start overheating after 10 minutes of using the camera, which is soo good. My phone is overheating after 2 minutes!
3 I'm using an original Rom, I'm not familiar with CFW on Sony! I tried the developpers option and found some problems in the corners of the screen and the phone ramdomly rebooted while I was testing it.
try to flash and do a full wipe then test it again if keeps the same it's probably a hardware problem, the touch can be minimize with screen protector but the battery an camera it's hard to manage.
sorry for my bad English it's not my native language
itemmaster said:
try to flash and do a full wipe then test it again if keeps the same it's probably a hardware problem, the touch can be minimize with screen protector but the battery an camera it's hard to manage.
sorry for my bad English it's not my native language
Click to expand...
Click to collapse
Allright bro, I'll give it a try. Actually, am not using a screen protector because I'm looking to fix this problem before buying a new screen protector.
I'm having the same problem with my touchscreen, I can't use the phone for more than 5 minutes without having the need to turn it off and on again to go back to normal. This is making me very mad that I'm considering to change my phone to any deep **** cheap phone that has a good screen that I can use normally..
I don't know if it's a software related or hardware, I flashed stock frimware many times and nothing changed, I recently had an urge idea to remove the stock screen protector (that has sony logo) hoping that the problem will get solved, but I guess it won't..
If anyone has an idea to solve this I and OP would be very grateful..
the screen touch is a hardware problem try to lower screen brightness and put a dark screensaver, it's somehow related with the contrast of the screen but not sure how to solve it completely the previously and a screen protector only make it usable but don't solve completely the issue.
sorry but that's all I know

Touch issues / Sensitivity issues after Nougat update

Okay so I wanted feedback regarding this whether someone else is experiencing this or not.
I have gradually observed during the last few days that a lot of my touches to click have gone unresponsive in Nougat. Initially it was something that I hadnt quite noticed but slowly the trend became obvious. Now dont get me wrong, this would happen a few times here and there with lollipop and MM as well, but the rate is far higher now on Nougat. Especially when typing on the keyboard this means mis-spelled words, missed letters, and accuracy is far worse now.
Has anyone else observed this or is it just me?
Just got my xcover 4 with nougat installed i have the same issue.
The sensitivity is low and i need to press a bit higher finger force to respond.
Even with sensitivity (glove mode) set to on things get worse.
I'm seeing the same thing. What is strange is that I'll see the button highlight/depress, but no action occurs. This is on multiple apps.
On what device/OS?
Sprint Note 5 on Nougat
Did you try gloves mode? Does it work?
the same for me on 920cd and the same iusse using S pen
I contacted samsung Greece about the existing problem.
I reported the problems me and you guys have and the tech support told me that your problems exist because you did not factory reset the devices before upgrading to nougat.
Anyone tried to contact samsung about the problem?
They dont know anything about it.
facing same issue screen lagging in note 5 sm-n920s also tried custom rom but still lagging in typing and scrolling on facebook
I have the same problem on my xcover 4 here!!
When I run the the touch screen test, touch screen responds well, but when I want to write a message or to scroll the home screen Its very annoying. It looks like software problem.
please help
Hi guys.
I have 2nd piece of Xcover 4 SM-G390F (first was change by seller for new one) and had the same problem. First 2-3 days all work perfect.. I have installed my applications, work perfect for two days, but after this... --After wake, display react only in centre area, 1 centimeter from display border no reaction or react on xxx touch. After few seconds (20-30) display react on full range, but with lags... So... I go for support to Samsung official at CZE.
Support tells me, that they don't know about this problem, that I'm 1st who has this problem... And some other bull... about unofficial sell and any other. So I post them IMEI and they let me know, if my distribution is official or not, and we'll see what next. They recomend me to go to service center, where somebody looks on my SM. So I see tomorrow.
ROM - official Android 7 Nougat from start using (not updated from other version)
Deleting apps - no effect
Safe mode - no effect
Factory reset - no effect
Apps to calibrate screen - no effect

P20 Pro: Random ghost movements after every restart?

After just having received the Android Pie 9.0 update yesterday, I still have the same issues as since I bought this phone:
Being that after a restart the phone is unusable, as it starts doing whatever it wants, as if there were shadow presses and swipes on the display.
These totally random, involuntary movements, as if I were touching the screen, even though I don't. Those occur so fast that I can only stop it (for a limited time) by pressing the power button (turning off the display and all actions), are totally not something I have ever experienced on another phone before, not even with OnePlus.
I took my case off just in case this would cause pressure on the phone, but it still happens without the case. I propped the phone up so that I definitely don't touch or cover any sensors, but it still happens.
It seems some internal sensor is broken, as this issue still persists after updating to Android 9.0. Unless this might be related to the Nova launcher?
Unfortunately I don't see a way of recording this issue without compromising my personal information, so I can only describe it.
I hope I can resolve this through a device swap through my carrier, but I doubt it. Has anyone else experienced this issue?
knowledgeworker said:
After just having received the Android Pie 9.0 update yesterday, I still have the same issues as since I bought this phone:
Being that after a restart the phone is unusable, as it starts doing whatever it wants, as if there were shadow presses and swipes on the display.
These totally random, involuntary movements, as if I were touching the screen, even though I don't. Those occur so fast that I can only stop it (for a limited time) by pressing the power button (turning off the display and all actions), are totally not something I have ever experienced on another phone before, not even with OnePlus.
I took my case off just in case this would cause pressure on the phone, but it still happens without the case. I propped the phone up so that I definitely don't touch or cover any sensors, but it still happens.
It seems some internal sensor is broken, as this issue still persists after updating to Android 9.0. Unless this might be related to the Nova launcher?
Unfortunately I don't see a way of recording this issue without compromising my personal information, so I can only describe it.
I hope I can resolve this through a device swap through my carrier, but I doubt it. Has anyone else experienced this issue?
Click to expand...
Click to collapse
Is there a third-party one-button lock screen app installed on your phone? There may be conflicts.
bobo have a dream said:
Is there a third-party one-button lock screen app installed on your phone? There may be conflicts.
Click to expand...
Click to collapse
No, there is no necessity for this.
In the fact issue occurs also in Safe Mode as well as after cleaning the system cache (wiped through the menu which is available for soft reset / wiping all data).
The issue got only more and more severe this week and sometimes temporarily froze the screen / inputs and did lead to error messages on the camera app, making it impossible to take photos temporarily.
Huawei referred me to a local repair shop and I will hand in the phone for repair by early next week, once I have organised a replacement phone.
knowledgeworker said:
No, there is no necessity for this.
In the fact issue occurs also in Safe Mode as well as after cleaning the system cache (wiped through the menu which is available for soft reset / wiping all data).
The issue got only more and more severe this week and sometimes temporarily froze the screen / inputs and did lead to error messages on the camera app, making it impossible to take photos temporarily.
Huawei referred me to a local repair shop and I will hand in the phone for repair by early next week, once I have organised a replacement phone.
Click to expand...
Click to collapse
Good luck!

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