Problem with touch screen or software bug? - Huawei Mate 20 Pro Questions & Answers

I bought a Mate 20 Pro on preorder and noticed within a few days a seemingly non-responsive part of the screen that was an intermittent issue.
Basically every now and again (often enough it’s annoying but not every time) after I unlock the display I am unable to select any app icons in the lower half of the touchscreen. The top half is fine - the home buttons are fine but everywhere from the middle down is non responsive.
I assumed a hardware fault so amazon replaced it for me - and the new device is exactly the same!
Am I just super unlucky and have managed to get two faulty devices a month apart from Amazon or is something else causing the issue?
Thanks.

Think you've just been unlucky,nothing like that on mine

Fine here too. I assume you tested this as soon as you got the phone before installing any app / custom launcher?

Have you tried running smart diagnostic tests manual mode in hicare, there's a touchscreen display test.
Sent from my HUAWEI LYA-L09 using XDA Labs

I only noticed it in use after I used a custom launcher however I tried multiple launchers and saw the same behaviour.
I just did the HiCare test and it says normal. I did hard reset it the other day and it hasn’t happened since so I will see if anything else happens. I can’t say I am thrilled by the thought of another swap from amazon if it does happen. That’s super bad luck.

Hi how did it go after the hard reset?
I got the same issue myself but instead of being the lower half, my entire screen does not respond to touch. I've done a hard reset my self and i do run the stock launcher. Even though my screen still doesn't respond to touch now and then after unlocking the screen or receiving a phone call.

Touchscreen issue
Yup I get it annoyingly so as well! Often takes a "double tap". Pain in the ace!

Related

Touchscreen Unresponsiveness?

So I made the jump from Android (Nexus One) to the Radar and I really like it so far!
I do, however, have an issue with the phone that I am wondering if anyone else has noticed.
I have noticed that sometimes when I go to touch a tile(or other UI object)...if I quickly touch it, it seems that the screen doesn't always detect my touch. Sometimes I'll even hit it a couple of times before it responds.
The behavior is inconsistent though. After it smartens up and responds to my touch, then it seems to detect it fine. It's squirrelly and a little disconcerting.
I also think that the region of the screen might have something to do with it. The tile 2nd from the top on the home screen ("messaging" in my case) seems particularly susceptible to this problem.
Has anyone else noticed this? I'm a little paranoid because I bought this phone "new" from someone on CL and when I took it home I realized it was a refurbished model.
I had this problem when I had my 7 Pro. After a while it got worse, as I had to put the phone on standby and then turn it on again to be able to use the screen. I sent it in to HTC for repair, and they swapped the entire front panel with a new one.
Im having the same problem with my sprint arrive I think the problem is related to what is in this thread:
http://forum.xda-developers.com/showthread.php?t=1239238&page=7
but I still cant seem to get it to work

SOLVED - Xperia Z Ultra - LCD Screen Issue while TURN ON - New Problem - UPDATE 8/15

I've had my XZU for a week now, everything has been working fine so far. Nonetheless I've noticed lately that when I turn it on I will see like a curtain or shade of colors from the top down up to half of the screen (it's like a flash, quickly disappearing), apart from that it will resume from sleep fine and no other issues, nonetheless is weird that this is happening now after a week of usage, I hope is not a symptom that something worse is about to happen. I have attached a Youtube link to a short video I just recorded.
NOTE: I do not think is a software problem because I booted the phone is "safe mode" and the exact same thing happened. It seems like a hardware issue that gets worse over time, because at the beginning happened once out of 4 times I turned it on, now is once every two times. I do not see a very good future with this phone
http://youtu.be/1ZucFrMvg_w
UPDATE 8/15: All my screen issues have been fully resolved with FW .475
So we have our own thread for the curtain now.
Sent from my C6802 using XDA Premium HD app
I think the issue is Power Management related, let me explain. If I turn on the device after being idle for a while (device is COLD) there will be no curtain issue, but if I turn it OFF and then ON right away (device is WARM) it seems the phone is entering a power save state and is not ready to be powered on again and that's when you get the curtain issue. The result seems to be very consistent with my explanation.
What I do not understand is that why this problem started happening after one week of usage, I thought it was application related but after my "safe boot" mode where no new applications are running only stock apps and I got the same result it can be application related. Also I thought that maybe the Stamina Mode had something to do with it, but it does not.
My last theory is that there is a piece of hardware that is getting degraded over time and when the phone is warm it will produce the curtain effect, if that's the case this is really bad, because the whole phone could stop working down the road. but it's just a theory.
Oh man
My experience with similar LCD issues has been around poor connection between the LCD screen and the motherboard. However, I'm by no means an expert on this.
I would definitely be claiming under the warranty for this.
I spoke with the vendor in Singapore and told me this is a known problem by Sony and they are working on a Firmware update. They suggested to keep the phone until the FW will be released in September and then decide if I will exchange it or keep it. The vendor also extended the Return/Exchange window until October so I will have enough time to test the phone after the FW update.
It's good to know that Sony has acknowledge the problem and is working on a solution.
Any chance Sony will do a firmware update to resolve this?
So it might be a firmware issue? I sure hope so
Sent from my C6802 using XDA Premium HD app
UPDATE 2
I think the problem is Power Management related, because if I leave the phone idle for 5min and then I turn it ON it will happen the issue you are seeing on the attached video. But if you turn it OFF and immediately turn it back ON again it will be fine. I think what is happening is that after 5min the phone will enter into DEEP POWER SAVE. The threshold to enter power save mode is around 15 seconds. I would say is something that should be able to be fixed with a Firmware update, but my only concern is why this problem did not happen during the first week, that behavior makes me think it's a Hardware problem that developed over the first week of usage, meaning a defective device.
NOTE: As you can see at the beginning of the video the phone has been Factory Reset, so there are no third party apps and anything wrong on the configuration.
http://youtu.be/vgnILc3ib8M
Mine did it the first day. I noticed it did it about 3 times that day. And I agree with you it might be the power save mode. Hopefully it gets resolved.
Sent from my C6802 using XDA Premium HD app
my phone has a problem too
http://youtu.be/Jv-QkbZBi58
Watch my video..
yellstop said:
http://youtu.be/Jv-QkbZBi58
Click to expand...
Click to collapse
I got a XPERIA Z ULTRA TODAY and I didn't install anything.
but When I push the power button, this phone wake up randomly.
after factory reset, this situation is same continuosly
http://youtu.be/pig1BurDaGw
brosenz said:
I've had my XZU for a week now, everything has been working fine so far. Nonetheless I've noticed lately that when I turn it on I will see like a curtain or shade of colors from the top down up to half of the screen (it's like a flash, quickly disappearing), apart from that it will resume from sleep fine and no other issues, nonetheless is weird that this is happening now after a week of usage, I hope is not a symptom that something worse is about to happen. I have attached a Youtube link to a short video I just recorded.
NOTE: I do not think is a software problem because I booted the phone is "safe mode" and the exact same thing happened. It seems like a hardware issue that gets worse over time, because at the beginning happened once out of 4 times I turned it on, now is once every two times. I do not see a very good future with this phone
http://youtu.be/1ZucFrMvg_w
Click to expand...
Click to collapse
My Z Ultra does exactly the same thing but it does not worry me. Seems to be a software glitch that should be easily fixed.
Mine happens when i am taking calls and i turn the screen on or off. Other times it is random but normally when i have been using the device for a period and then turn the screen on and off quickly after using it.
But yeah, i do not think it is an issue to worry about. If it was serious, surely the screen would be having issues a lot more when it is on and not under these specific situations?
ScottishSwan said:
My Z Ultra does exactly the same thing but it does not worry me. Seems to be a software glitch that should be easily fixed.
Mine happens when i am taking calls and i turn the screen on or off. Other times it is random but normally when i have been using the device for a period and then turn the screen on and off quickly after using it.
But yeah, i do not think it is an issue to worry about. If it was serious, surely the screen would be having issues a lot more when it is on and not under these specific situations?
Click to expand...
Click to collapse
If it's a software problem how is it possible that during the first week the phone worked fine?, even after a factory reset the problem will still be there, that means (to me at least) that a hardware issue develop during use for the first week and now it cannot be recovered
brosenz said:
If it's a software problem how is it possible that during the first week the phone worked fine?, even after a factory reset the problem will still be there, that means (to me at least) that a hardware issue develop during use for the first week and now it cannot be recovered
Click to expand...
Click to collapse
seems to me like the screen is not getting enough power for the first couple of seconds
douse this problem also happen if u disable stamina mode :?
dragnar said:
seems to me like the screen is not getting enough power for the first couple of seconds
douse this problem also happen if u disable stamina mode :?
Click to expand...
Click to collapse
I've tried both scenarios Stamin ON and OFF, same result no difference
So far the new update looks to have fix the curtain
Sent from my C6802 using XDA Premium HD app
Update:
2 days ago I left my ZU on charge all night and today updated to firmware 14.1.B.0.475 and touch wood no more screen issues, and finally my cover arrived just need the sbh-52 and dock and I am all good.
Do a factory reset with full wipe!!!
For make sure you totally wiped that garbage bro

[Q] Touch issues even though i have the latest FW?

Hi, i have had my tablet for about 1 week, straight after starting it up i had a fw update which is 17.1.1.A.0.402 which i am assuming is the latest?
anyway i have read a lot about the new fw was supposed to fix the touch issues?
I also have the z1 which i still have and is perfect. ive recently updated to 4.4.2 on that and all my issues are fine on there.
my z2 is acting very strange, if i leave it alone for a while sometimes i will go on it and everything on the screen will be frozen, i can't tap anything, i have to press the power button and then swipe to open it again, it is then fine after that.
also i have noticed, and i think its happening a lot when my tablet is a little angled using the case, the screen will be a bit jittery, where as my z1 is really smooth, and i also sometimes have to really tap icons a few times before they register.
i play clash of clans a lot and its been a bit difficult to play as troops aren't selecting as i am tapping on them.
has anyone got any advice?
I have done a factory reset to see if that would fix any issues from the fw update but its still exactly the same.
Thanks
James
anyone?
james_lpool said:
anyone?
Click to expand...
Click to collapse
I installed the new firmware yesterday. While I notice an improvement with the touch problem it's still present. Just install an multitouch app (like this one: https://play.google.com/store/apps/details?id=com.easylabs.multitouch), let your finger trail on the screen and it's definitely obvious (the number on the top right should be the number of fingers touching the screen and it's often not). I tried the same thing on my old Iconia A500 and that's the one thing where it's WAY better than the Z2.
I don't experience anything as strange as you do though, it's mostly usable and I hardly notice it with the new firmware.
I did experience something very strange just BEFORE updating with one specific charger and one specific USB cable , the tablet wouldn't register any touch at all while it's was plugged in. As soon as I unplugged it it would work. The cable was fine with another charger and vice versa;
Weirdest of it all:
This happened while I was testing the output current for each combination of cable/charger and this particular couple was the one giving the "best" results; consistently between 1.1A and 1.2A
I can't reproduce this behaviour with the new firmware. All in all, it's usable for me. Biggest bug would be it not charging while playing power consuming games.
I have found mine goes more weird when it goes to sleep and i then wake it up, the screens sensitivity seems to be terrible, i have topress the off button and then start it again then its fine.
it will then mostly stay fine until the screen times out again then the same thing will happen when i wake it.
James: Same with my 521...
Touchscreen response was REAL BAD after updating to .402, then it went better and better day by day; strange phenomenon.
I also occasionally experience some touchscreen "numbness" after waking up the table with a double-tap, sometimes touch sensitivity suddenly becomes quite low just without any reason; touchscreen has problems detecting touches near the screen corners or doesn't react to touches at all. Solution: Switch to standby, and back on.
At the same time, the Android symbols (Back, Home, last apps) again become difficult to hit.
You can test this by slowly swiping your finger up from the lower bezel towards one of the symbols: If the touchscreen is ok, symbols get highlighted right after your finger reaches the lower edge of the symbol. If the touchscreen malfunctions, you need to move your finger up to the center of the symbols to get them highlighted.
So it smells like a software issue.
Touchscreen problems usually occur two to three times a day of normal use; so I regard it as acceptable - but the problem still isn't fully solved.
I would say it's a hardware issue which Sony attempts to counterbalance with software patches.
Just like on the Nexus7 (2013). There sfhub released a touchscreen fix which made the problem bearable for most users (with some experimenting with different versions of the fix, because each device is different).
I wrote a PM to sfhub asking him whether he could disclose how his fix works so that Z2 Tablet users perhaps could apply a similar, variable, tailor-made fix to their individual device.
No response, unfortunately.
Perhaps some of you could send the same request to him, and perhaps then he reacts?
every now and then, after double tap to wake, the tablet is extremely unresponsive.
I also just sleep/wake up again via power button and it's fine after that.
So my but feeling it's a software issue, not hardware issue.
- Frank
I never had touch problems but after updating to the latest firmware, the tablet is unusable from time to time
what's annoying me is that Sony wont seem to admit that there is an issue, i was talking on their live chat to support and they said that's the first time anyone's mentioned that and isn't on any list of any known issues
Which doesn't fill me with confidence on how quick this may get fixed.
The speed in which is gets fixed may determine if i just send the tablet back to Amazon for a full refund, unfortunately i have bought the Sony case and magnetic charger now as well
I'm just really puzzled what to do, what can i do apart from sent it back if Sony wont even acknowledge they are aware of the problem and will release a fix soon
The only thing is because i have now bought the charger and case, i kinda want to keep it.
It was a direct replacement for my Z1 which i still have, and that is also updated to 4.4.2 now, but that shows no touch issues at all.
What's very interesting and revealing:
When Sony was addressed a few days ago regarding battery problems on Tablet Z and a few phones after the Kitkat update, they immediately reacted!
They readily explained that it is a problem with the Google Play Services running amok and that a fix will come.
But it seems that just because this here is a Sony problem (and not one for which another company can be blamed like in the above one), Sony simply doesn't react at all and obviously orders the service employees to lie and say that they haven't heard at all of a touch problem.
Boooo, Sony, shame on you!
james_lpool said:
what's annoying me is that Sony wont seem to admit that there is an issue, i was talking on their live chat to support and they said that's the first time anyone's mentioned that and isn't on any list of any known issues
Click to expand...
Click to collapse
HAHA ! Exactly the same in Germany. Even after talking about that issue with the SAME person three days in a row, I still was told the problem was totally unknown.
Later, I had a more private talk with one of the support guys. He revealed to me there was an order from Sony to tell callers exactly that.
Ah, as I thought.
This is abysmal behavior by Sony, period.
Also on the Sony support forum, none of the official support staff has replied to any of the topics about touch screen issues. It seems they are just completely burying their heads in the sand...
FW .402 didnt fix the touch screen issue. It is noticeably better than any FW from before.
Gosh, the touchscreen keep going back to home when i'm in a middle of fb conversatuion.
I was testing with chromecast +youtube: those swibe action to enlarge or fade out afe 99% imprecise...
Really wondering if I can return the item to amazon to fix this problem...
Diomorgan said:
Gosh, the touchscreen keep going back to home when i'm in a middle of fb conversatuion.
I was testing with chromecast +youtube: those swibe action to enlarge or fade out afe 99% imprecise...
Really wondering if I can return the item to amazon to fix this problem...
Click to expand...
Click to collapse
Are you sure you're not just accidentally touching the home button while typing? That happens to me from time to time, which is a downside of having the navigation buttons centered compared to having them in the corner like on pre-4.4 Android tablets. I actually think Google should add a setting to choose if the navigation buttons on tablets are in the left corner, centered, or in the right corner. Having them centered also makes it awkward to reach these buttons when holding the tablet with two hands.

dead bar on part of screen

Hi all,
so i have an issue with my p9000. There is a "dead" zone on my screen, it's about 1.5cm wide and covers the screen from left to right.
This part of the screen stopped working a few days ago, it's not responding to touch. Rest of the phone is fine, everything works as it should.
Can this be because of some wrong settings in screen size in rom or any other settings, or is the screen most likely dead ?
Seems like there is a faulty batch
I got that problem too.
Mine is on Eragon ROM and part of the screen is unresponsive in applications other than the Nova Luancer.
My device has the same issue. Try to zap repeatedly the dead part of the screen with a piezoelectric tool, such as a mosquito bite relief device or a lighter. Works form me, but it's only a temporary solution. The issue comes out again from time to time.
So it looks like a device issue then. Was hoping for software error.
i have the same problem. It is not software error unfortunately. Looks like a faulty batch to me too.
I use Eragon and was dealing with the same issue. Then suddenly it disappeared. After flashing an update it came back and then it disappeared again. Since then everything is fine
Ok, now this problem is permanent. I talked with Banggood and will send it back to the service.
So I've sent one email to elephone support department. They were offering me a 15$ discount. Was very surprised. Anyhow during further conversation they have agreed to fix the device. I will send it as soon as I get another device I can use daily.

Redmi 5 slowdown and slow screen response

I have a Redmi 5 phone. I had Global Stable ROM than switched to EU Beta. Currently on 8.7.19. I had a problem on both ROM. Randomly my phone slowdowns. Or at least the screen I don't know exactly. I have to press the screen harder and the response can take 1-2 seconds. Locking and unlocking the phone solves it. What can I do to solve this problem?
I have reported the issue. Please confirm it. We need official answers because many people has this. http://en.miui.com/thread-3446668-2-1.html
OK! I'm pretty sure now it's a hardware issue! Flashed TWRP recovery which also had screen freeze problems!!!!!
Than flashed an old firmware 9.2 something and flashed LineageOS over it. Guess what? SCREEN FREEZE!!! It can only mean one thing: it's a hardware issue. It's also explains why they ignore it: because they don't want to admit it! And because this much people has this problem we can say Redmi 5 is a FAILED PRODUCT. Xiaomi should call back this devices and give back my money immediately. But I think we are just ****. They will not care about it. Maybe only the service center can do something about it but it's a long and unnecessarily procedure. I think best option is to sell the phone and NEVER buy Xiaomi again and to stop recommend to anyone to buy it.
{:m016:} {:m016:} {:m016:} {:m016:} {:m016:}
BUG report: http://en.miui.com/thread-3446668-1-1.html
Hi! I have this exact same problem but I ruled out a hardware issue because every time there was slow to none response, if I turned the screen off and on again, it would fix it. I've been looking for a solution and after trying many, many things I've discovered the problem was that I was using the Full Screen option offered by MI, i.e. the option to remove the three main buttons at the bottom of the screen (Back, Home and running apps) and to control the phone with gestures. After going back to the classic three button style, I restarted the phone just in case and I haven't had any more response issues in two days, I think it was a success!!
I also faced this problem for months, specially, after I changed my display as I accidentally dropped my phone a few months ago. Sometimes the screen seems to freeze temporarily, but then -
- turning off and again turning on screen
- swiping the screen (bottom-top) with a little pressure for 1-2 seconds
- slightly bending the device
Any of this three work for me.
What I think:
It's a hardware (display) issue. My newly changed display creates this. But I am quite sure, when my device bends slightly this problem occurs.

Categories

Resources