Touch issue - Lenovo ZUK Z2 (Plus) Questions & Answers

I dropped my phone from a 2 ft height. Everything was working fine. The display also has not got any crack as I had tempered glass applied. But on-screen navigation bar was not working. So I thought factory reset would work. I was on Paranoid Android 7.3.0 Dev ROM. But it did worse.
Now the touch works for only 2 seconds of screen on. And again I turn off the screen and turn it back on, the touch works for 2 seconds only. What could be the issue? Hardware?

Yes,I believe its hardware issue.

Workaround
I too got the same issue. I tried one workaround indicated by someone else on another thread. Follow below steps
Press power button to put screen off
Hold phone in left hand and put left thumb on screen
Press power button to start screen
Touch with right hand fingers
It will work till left thumb is there on screen..
If touch is lost follow from step one
Atleast this helps alot instead of only 2-3secs stuff..
Thanks to one who indicated this workaround

Related

[Q] Screen wont turn on after it turns off. ATT Tilt 2

Everytime I boot my phone up, it works fine up until when the screen goes into sleep mode. Once it goes into sleep mode I cannot turn the screen back on, it stays black. The keyboard, end and answer key lights show up when I press the power button but the screen just stays black no matter what button I press.
I end up having to either take the battery out or using the stick to press the reset button on the side in order to get the phone to where I can see the screen again. I have adjusted the settings to where the screen doesnt go into sleep mode and the screen just stays on but that drains my battery. I want to be able to have my screen go off so I can save power but if it goes off it wont come on again until I reboot.
I have done a hard reset. This problem started happening to me when I started using the Energy Rom but I've even flashed different Roms and the problem still exist.
Somebody please tell me what's wrong! I need help! This is a big annoying problem to have. Thanks.
is this problem occurring when you slide the keyboard out?
i had the t-mobile touch pro2 with this problem.
the screen would die when the keyboard was out and not come back.
if this is the case, what i did was...
well. obviously not open the keyboard fully.
but if i accidentally had.
instead of pulling out the battery, i waited...
till the screen 'naturally' went to sleep.
than i would pull out the stylus or press power button
and the screen would come on.
sh4d0w86.
sh4d0w86 said:
is this problem occurring when you slide the keyboard out?
i had the t-mobile touch pro2 with this problem.
the screen would die when the keyboard was out and not come back.
if this is the case, what i did was...
well. obviously not open the keyboard fully.
but if i accidentally had.
instead of pulling out the battery, i waited...
till the screen 'naturally' went to sleep.
than i would pull out the stylus or press power button
and the screen would come on.
sh4d0w86.
Click to expand...
Click to collapse
Yes the problem still exist even when I slide the keyboard out. Once the screen goes off, that's it....pressing the power button to get it out of sleep mode, sliding the keyboard, I press all buttons and nothing works. The only thing that "works" to get the screen back on is removing the battery or using the stylus to press the reset button.
When sliding the keyboard out the keys light up but the screen doesn't come on, also pressing the power button lights up the end and answer keys without the screen coming on.
themasterhook2000 said:
Yes the problem still exist even when I slide the keyboard out. Once the screen goes off, that's it....pressing the power button to get it out of sleep mode, sliding the keyboard, I press all buttons and nothing works. The only thing that "works" to get the screen back on is removing the battery or using the stylus to press the reset button.
When sliding the keyboard out the keys light up but the screen doesn't come on, also pressing the power button lights up the end and answer keys without the screen coming on.
Click to expand...
Click to collapse
so. whenever the screen goes out, period, you cant get it back?
or the screen goes out and cant get it back once you slide the keyboard out?
if it is only when sliding out the keyboard...
try not opening the keyboard fully on the right side.
on my rhodium, after that point, the screen goes out.
sh4d0w86.
sh4d0w86 said:
so. whenever the screen goes out, period, you cant get it back?
or the screen goes out and cant get it back once you slide the keyboard out?
if it is only when sliding out the keyboard...
try not opening the keyboard fully on the right side.
on my rhodium, after that point, the screen goes out.
sh4d0w86.
Click to expand...
Click to collapse
Yes, period. Also, you know when you put your face to the phone during a call and the screen goes off so your face wont press anything on the screen? It doesn't come back on from that either once I end the phone call, it just stays black. I'm assuming you don't have any other suggestions. This Sucks
themasterhook2000 said:
Yes, period. Also, you know when you put your face to the phone during a call and the screen goes off so your face wont press anything on the screen? It doesn't come back on from that either once I end the phone call, it just stays black. I'm assuming you don't have any other suggestions. This Sucks
Click to expand...
Click to collapse
: / sorry. i am unsure.
maybe you have a lose connection?
sh4d0w86.
This has to be a software issue but I don't know where to start. I'm surprised nobody else has encountered this problem. I've grown frustrated of this issue because I don't understand why it's doing this. I have had the phone for almost 6 months only dropping it once 4 months ago and it wasn't a strong damaging drop that would affect anything inside. I guess I'll just have to go last resort and call warranty to swap the phone out. Thanks for the help.
Same problem
themasterhook2000 said:
This has to be a software issue but I don't know where to start. I'm surprised nobody else has encountered this problem. I've grown frustrated of this issue because I don't understand why it's doing this. I have had the phone for almost 6 months only dropping it once 4 months ago and it wasn't a strong damaging drop that would affect anything inside. I guess I'll just have to go last resort and call warranty to swap the phone out. Thanks for the help.
Click to expand...
Click to collapse
My phone also dos not come back on, when I put it in out the sreen with the power button on top, or when the phone goes to sleep. Nothing can put it back on(opening te keyboard, pulling out the stylis, presing the answer-, windows-, back- and end button). I and up using a music players too keep the phone busy what's makes it operational. Cant really remember when this started happening exactly. My phone is at the moment loaded with a standard ROM. I used too have a custom ROM.
My TP2 does this too, although I only encounter the problem sometimes when someone calls. I answer and put the phone next to my ear, the screen goes black as it should and the phone just dies. I can't hear what the other person is saying and the screen wont turn on anymore. I have to take out the battery to reboot.
set light sensor to manual in settings. You have some bad or fragmented code causing the problem. Pretty common actually, many different reasons, but usually either a bad light or proximity sensor or software issue. Setting the sensor to manual should do it, if not, hard reset and allow the phone to fully set up before touching it, to allow full customization process to complete. Search my posts on SOD (sleep of death) for more information.
Funny this was brought up. Now im worried I just dropped 250.00 and have a new one coming.
Mine started with the ear piece quit working. couldnt hear anything except on speaker.
Anyway I started having the screen issue over a month ago, only way to get it back was soft reset with the stylus. Also when the screen was lit, I couldn't hit the power button to turn the screen off. At times the screen would be on 24/7 and I just dealt with it. The times when it decieded to go to sleep was when I needed the soft reset. Well long story short I forgot my charger one day at work and the battery died. after pressing the power button for hours with no response, moving the screen in all diffrent directions as I pressed the button.It came on once after hrs of messing with it. Well today it died again and I am fed up with it so out came the tools. Once I opened it up I noticed the ribbon that feeds the screen from the mother board was worn and torn. the ribbon slides everytime the keyboard is slid out and it rubs on both sides of the phone. I thought maybe mine was just a fluke and was installed wrong considering the phone being 10 months old but now I read this and see maybe its a common problem. The cheapest I could find the Ribbon was 56.00 so I didnt want to chance it not being the issue.

Bottom Touch Screen Buttons

Is it just me or are the three bottom touch screen buttons finnicky not always responsive on the first quick? Like you also have to wait a second before clicking and can't really mash the touch button.
They work, just sometimes hard to use.
I haven't found this but I have flashed 4.0.3 only days after getting the phone. What version are you on?
Why did you make another topic about this..?

Horizontal line not responding to touch

My whole screen is responding to my touch in the sense that the screen recognizes that i have touched it i.e. buttons can be pressed and pages can be swiped left to right and up and down, However one portion of the screen with no appearence defects whatsoever just doesnt respond to touch, its the whole portion (horizontally from one side of the screen to the other) where the power off button is when the power button is held. The pixels are fine but it refuses to respond at all.
Any advice before i send it off for repair?
Ive tried restarting the phone and whatnot but it has made no difference.
trippinz said:
My whole screen is responding to my touch in the sense that the screen recognizes that i have touched it i.e. buttons can be pressed and pages can be swiped left to right and up and down, However one portion of the screen with no appearence defects whatsoever just doesnt respond to touch, its the whole portion (horizontally from one side of the screen to the other) where the power off button is when the power button is held. The pixels are fine but it refuses to respond at all.
Any advice before i send it off for repair?
Ive tried restarting the phone and whatnot but it has made no difference.
Click to expand...
Click to collapse
Do you mean the status bar area? I had that and I just had the phone replaced.
No, you know the bit where it says power off? The whole button along with everything to the left and right is unresponsive
What's weird is that it started working then stopped again it's done that twice now. I hate intermittent errors as they tend to overlook them in repair...
Sent from my HTC One X
Horizontal strip not registering touch
Woke up this morning, a strip in the middle of the screen stopped registering touch .
Factory reset did not help..
Any ideas, before I send it to HTC for a repair?
unrooted, stock 4.0.4
I tried everything, I sent it to htc and they fixed it within 10 days
Sent from my HTC One X using xda app-developers app

[Q] Back/Return capacitive button not responding.

Hey guys, just wanna ask what should i do with this issue. I've had my phone for about 3.5 months now and I just started having this issue this morning. I haven't dropped my phone in any kind of way (no water damage or anything). When i woke up this morning i was trying to to tap it, but it just wont work. I rebooted my phone to TWRP and the back button is working just fine. I thought there was just something wrong with the rom i was using (wicked v5.1, its awesome btw) so i wiped my phone and re flashed it, but it didn't fixed it, I tried flashing a different rom but the results were still the same. Then i thought that its probably because of my screen protector (iloome Tampered screen protector) but then again,I've had the screen protector on for a very long time already, and i never had an issue pressing the menu and back button.
For clarification, which is not working?
You mentioned you tapped the screen and nothing happened.
Is the screen not responsive to touch?
You mentioned that the back button works in recovery.
You also mentioned you never had issues with back and menu buttons.
What is not working, and is the issue intermittent?
hello, thanks for the rep.
Biker1 said:
For clarification, which is not working?
You mentioned you tapped the screen and nothing happened.
Is the screen not responsive to touch?
You mentioned that the back button works in recovery.
You also mentioned you never had issues with back and menu buttons.
What is not working, and is the issue intermittent?
Click to expand...
Click to collapse
Im talking about the capacitive back button, and when i mentioned that it works in TWRP, im specifically talking about the capacitive button, not the on screen buttons like on nexus devices. And it also seems to work sometimes if i pressed on it hard enough while its connected to my charger.
Beelzebub24 said:
Im talking about the capacitive back button, and when i mentioned that it works in TWRP, im specifically talking about the capacitive button, not the on screen buttons like on nexus devices. And it also seems to work sometimes if i pressed on it hard enough while its connected to my charger.
Click to expand...
Click to collapse
Hmm....
So the back capacitive button is working intermittently.
Sounds like a possible hardware issue.
I know you don't want to, but to rule out the protector, one would have to remove it, but that canbe sa last resort.
If all else fails to resolve issues, and you have insurance, you'd have torremove it anyway. Even if under Samsung warranty and no insurance.
- you can try the setting that's used for gloved hands which increases screen touch sensitivity. I forget it's exact location, but easy to find out.
- you can check if this is a known issue, etc.
- try wiping cache and dalvik cache in Recovery again

Touchscreen Occasionally not responding

Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Please upgrade to the newest firmware.
Sydrox said:
Greeting,
I have a weird issue where occasionally after I unlock my phone, my screen doesn't respond to touches.
The phone works and responds to physical button presses but not touch.
Not sure exactly when it started happening but I've noticed this since last week.
Any idea what might be causing this?
I'm running Android Pie 52.0.A.3.202.
Click to expand...
Click to collapse
Got the same issue on 52.0.A.8.50. Usually opening the app drawer then hitting back solves it - otherwise none of the virtual buttons work.
Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks
bobsright said:
Searching the web it seems touch screen issues are pretty common on this phone. I'm a bit surprised there isn't more being said here about it. Some experience delayed response, dead areas and no response at all. I have all those issues. Yes I am on the latest firmware. I bought the phone used with a cracked screen. I checked it out and everything seemed fine. I didn't use the phone, just set it aside til replacement screen came. I should have used the phone to thoroughly check it out but didn't want to go through the set up process as I was thinking of B/L unlock and root. New screen came, put it on and seemed to be working fine then screen would be unresponsive. I did factory reset, software update, software repair, went into settings and made sure sure everything was good there, nothing helped. The center of the screen (it's low and a bit off center) is pretty much dead. To open launcher I have to touch and hold near the top of the display. Touch and hold apps is tricky. Usually the app just opens. When I do get it to hold, I can't drag it anywhere. Also, icons in the drop down menu cannot be rearranged or edited. I can swipe up/down, side to no problem. Whenever touch goes dead completely, the home, back and minimize buttons go grey. Tapping the power button gets them back functioning again. . Function test fail. Free draw lets me make a few seconds of scribbles then freezes. The x and rectangle block draw does the same. Tapping power button does nothing to unfreeze either. The color test pass even the block one where you toggle on/off sections of the screen in blocks. It's really weird. First impression would lead me to the screen but it really acts like a software issue. From what I've read so far this phone uses two different display drivers. I not seen anything on how to change that and it would more than likely mean B/L unlock and root, which I'm not against doing. I would just like to know definitively if it's hardware or software. Any input would be greatly appreciated.
Thanks
Click to expand...
Click to collapse
Maybe the Screen Connector wasn't 100% clean.
Or not only the screen is damaged.
I heard that the touch problems are mostly fixed with PIE. The closed source clearpad touch driver is..... Hoping Q gives us an further updated driver.
You still get sometimes ghost touches on higher workload or if the keyboard app is slow, but if you have dead spots the hardware sounds damaged.

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