Screen keeps turning off and on + sets brightness to 100 - Zuk Z1 Q&A, Help & Troubleshooting

Hey guys,
i have a serious problem, which happens really often lately. like 10 times a day. The screen just turns off sometimes. The touch-functionality is still working. I can feel the fingersensor "unlock" the Zuk Z1, but the screen just stays off. Then i try to press all the buttons and sometimes the screen turns on again. But sometimes it just turns on after some seconds even though I didn't touch it at all.
First I thought that this is a hardware issue, maybe a loose contact. But recently a new problem showed up. The screen brightness just goes up to 100%. I turned off auto-brightness and move the slider. Nothing happens. Restarting always fixes it. But mostly after 1-60 seconds it goes back to normal.
Any ideas what might be the problem? Or what I could try?
I haven't rooted the phone and its the newest CyOS version.
Cheers, Oliver

Perhaps you are using the flipcover with magnetic auto switch off when you close the case?
OlivBlum said:
Hey guys,
i have a serious problem, which happens really often lately. like 10 times a day. The screen just turns off sometimes. The touch-functionality is still working. I can feel the fingersensor "unlock" the Zuk Z1, but the screen just stays off. Then i try to press all the buttons and sometimes the screen turns on again. But sometimes it just turns on after some seconds even though I didn't touch it at all.
First I thought that this is a hardware issue, maybe a loose contact. But recently a new problem showed up. The screen brightness just goes up to 100%. I turned off auto-brightness and move the slider. Nothing happens. Restarting always fixes it. But mostly after 1-60 seconds it goes back to normal.
Any ideas what might be the problem? Or what I could try?
I haven't rooted the phone and its the newest CyOS version.
Cheers, Oliver
Click to expand...
Click to collapse

Thanks for the reply,
I havent thought of that before but it is not the cause of the problem.
1. I have a leather case
2. When I take the phone out of the case the displays stays dark

I just did a factory reset today in the morning and the problem already showed up again. So! annoying!!!! Will send back the device I guess

i have lenovo zuk z1 . actually i am getting a problem in this phone . after locking the phone at every seconds light turn on and get turn off on the display. i saw so much on the setting but i didnt get any setting .

The same problem is being arrising with me..please someone help. what should i do..

Related

Slow from turn on issues?

Hi Guys
So I've had a wizard for nearly a year now. No issues. Works fine.
Over the last few weeks, every time I turn the device on, it is unresponsive for the next 30 seconds or so. Basically, it turns on, screen lights up on the screen where I turned the device off. If the screen was an email or something like that I can still use the scroller on the right, but cannot navigate away from that screen until 30s later. None of the keys work during this semi-hung mode.
Weird hey.
Any ideas how to resolve would be much appreciated?
Thanks
ramir

Backlight dims, power button doesn't work properly...

I have had the Touch 3G for nearly a year now and for the last 3 months I have had this recurring problem which is fixed with a hard reset but will recur again after about 6 weeks. The symptoms are:
1. When turning on, the backlight dims just before the HTC flash screen and startup sound (when it says "Smart Mobility")
2. Touching the screen doesn't bring the backlight back on.
3. Pressing the power button doesn't turn the screen off from this dimmed state, but after pressing touching the screen will turn the backlight back on.
4. Pressing the power button again will now turn off the screen, but pressing it again won't turn the screen back on! If I call it from another phone, the vibrator goes on but it doesn't ring, the screen stays off and you can't answer the call. If you hang up on the other phone it keeps vibrating and you need to do a soft reset to stop it.
If I do a hard reset the symptoms are gone and reinstalling the exact same software doesn't cause the problems immediately but withing a month or so it happens again. All I did just prior to these problems was use TomTom a bit more than usual, but otherwise nothing different. I have used TaskManager to see if there is anything weird running in the background but it all looks fine. I have had a cursory look through the registry but also can't find anything?
Any advice would be appreciated.
pdiaz said:
I have had the Touch 3G for nearly a year now and for the last 3 months I have had this recurring problem which is fixed with a hard reset but will recur again after about 6 weeks. The symptoms are:
1. When turning on, the backlight dims just before the HTC flash screen and startup sound (when it says "Smart Mobility")
2. Touching the screen doesn't bring the backlight back on.
3. Pressing the power button doesn't turn the screen off from this dimmed state, but after pressing touching the screen will turn the backlight back on.
4. Pressing the power button again will now turn off the screen, but pressing it again won't turn the screen back on! If I call it from another phone, the vibrator goes on but it doesn't ring, the screen stays off and you can't answer the call. If you hang up on the other phone it keeps vibrating and you need to do a soft reset to stop it.
If I do a hard reset the symptoms are gone and reinstalling the exact same software doesn't cause the problems immediately but withing a month or so it happens again. All I did just prior to these problems was use TomTom a bit more than usual, but otherwise nothing different. I have used TaskManager to see if there is anything weird running in the background but it all looks fine. I have had a cursory look through the registry but also can't find anything?
Any advice would be appreciated.
Click to expand...
Click to collapse
Sounds like it's going all haywire. If you've had it less than a year, I'd send it in real quick. Sounds more like a hardware problem.
I don't think it is hardware as a hard reset fixes it...it just recurs down the track. I have done a hardrest and reinstalled all my apps and it is working great again but I was wondering if I should be checking somewhere in the registry for an aberrant setting. I am u using a backup image program so at least when it happen again I an restore my system more simply.
But then again, all the symptoms you mentioned point to a hardware defect. You could try to find a tweak, but like all electronic devices, it's the luck of the draw. Try emailing HTC and see what they say.

Screen blank on power on

I've had a problem with my E900 since I got it with regards to the screen. I was hoping Mango might fix it but it doesn't seem to have.
Sometimes if I press the power button the screen backlight comes on (i.e. screen goes from off state to powered) but there is nothing on the screen. No amount of button pressing will cause the screen to show anything.
If this happens I have to turn the device off again (backlight then goes off) and try again. Sometimes it can take 2-3 times before it turns on successfully with the lock screen.
I also have this if an incoming call attempts to wake the phone and also alarms too.
Does anyone else have this issue?
I confirm this one popping sometimes. Not that often that it becomes annoying, but nevertheless.
Did you find a solution to this problem? I am experiencing it too and it is very annoying!
I've recently inherited one as well (E900 that is).
The one I have has been dropped, the backlight powers, but no drawing on the screen.
I've disassembled and re plugged everything (bugger stripping down!) but still no luck. I've done a VolUp+Down+Cam+power hard reset, and when I plug into PC Zune says setup needs completing (so it has reformatted) but still no luck.
I cant see anything fried, and no damaged ribbons as far as I can see, any ideas?
I sold the phone a while ago, and never solved the problem. I think it's a firmware issue.
PaulMdx said:
I've had a problem with my E900 since I got it with regards to the screen. I was hoping Mango might fix it but it doesn't seem to have.
Sometimes if I press the power button the screen backlight comes on (i.e. screen goes from off state to powered) but there is nothing on the screen. No amount of button pressing will cause the screen to show anything.
If this happens I have to turn the device off again (backlight then goes off) and try again. Sometimes it can take 2-3 times before it turns on successfully with the lock screen.
I also have this if an incoming call attempts to wake the phone and also alarms too.
Does anyone else have this issue?
Click to expand...
Click to collapse
hi.
What do you mean "somethimes if I press power button"?
Is it pressed with purpose to lock the phone, press it to turn off phone (background slider shows to power off - on Mango and beyond version) or press it accidentally?
Cheers.
So, I did a phone reset. Unfortunately the issue is still present!
Sometimes when I press the power button to unlock the phone the screen is lit, but stays blank i.e. no lockscreen wallpaper, no nothing. The same happens sometimes when I get a phone call - the phone rings and vibrates, the screen is lit but stays blank.
When this happens I have to press the power button to put the phone into sleep mode and press it again to wake it up.
What I found is, when the issue occurs the screen is actually responsive. For example I can slid up and unlock the phone then I hear the unlock "pop" sound. It's just that nothing is drawn on it!
I was wondering if anyone else experienced the same behavior and found a resolution. Also I am not sure if this is a software or a hardware problem. If I could confirm it was a hardware problem I would call LG and have the phone repaired or replaced.
i have exactly the same issue as you, it gets really annoying.
i heard from someone online that the only way to resolve it is to replace the motherboard
billybrown said:
i have exactly the same issue as you, it gets really annoying.
i heard from someone online that the only way to resolve it is to replace the motherboard
Click to expand...
Click to collapse
I am pretty certain this is a hardware issue. I am calling LG tomorrow and hopefully they'll take the phone for repair/replacement.
I sent my phone for repair. Today I got it back, and guess what?!
The issue is still present! It seems, they "couldn't reproduce" or something.
What should I do now?
EDIT: If anyone is interested, here is a video I just captured which clearly demonstrates the problem. http://youtu.be/38kF9RYs_bU
I'm sending the phone back for repair tomorrow with this video attached.
Hey, might not be an issue at all, but in the video, I saw that the two times you were able to get it to go blank you had your finger on or near the proximity sensor. I wonder if there is something that could be the trigger.
Just wondering if you can duplicated it or cause it only when you have the proximity sensor blocked, or if it truely is random.
You are right, it might has something to do with the proximity/light sensor.
On the other hand, this issue occurs even on incoming calls when the phone is placed on a table, screen up and nothing around the sensor.
Today, I visited my local carrier shop and left the phone for repair again. They told me, since this is a second claim they'll run it through the process faster, so I expect to get it back next week.
Will post an update.
UPDATE: My phone was replaced. Yesterday I got a brand new unit, yeah! It was stock wp 7.0. I plugged in my sim and used the phone the whole day, no sign of blank screen issues. Last nigh I installed all the updates (total 5 I think) up to OS 7.10.8107.79, FW 1.0.16.10. Guess what?! Same issue!
I am crushed

[Q] Screen off randomly

Hi all.
I'm facing a strange issue: my screen turns off randomly, everything else works (led, soft buttons,...) and when pressing the lock button i even hear the noise of the phone locking.
Normally when i unlock the phone the screen turns on ok, sometimes i need to repeat 2 times to get screen on, and while using the phone again the screen might turn off in 3 seconds or it might work of for several hours.
I'm attaching a log where a random screen of happens just two-three seconds after a random screen off and i would kindly request any dev to look at it and try to answer if it's a hard or ROM/kernel issue (actually i'm with crdroid rom and chronic kernel).
If it were a hard issue i've bootloader & knox ok for being able to reflash to any official rom but i'm a little scared about having a random screen off while flashing: i've no idea of how i should act if i fall in this situation.
Hope anybody might see the log and give me some light!!
Cheers all!!

Lock Screen won't turn off

Hi there. I'm currently having an issue with my S7 edge where the lock screen won't turn off after some time. The screen does turn off when I'm using the phone normally from the main screen after some time passes but it's just the lock screen I have issues with.
Whenever I charge my phone or just hit the power button once to see notifications on the lock screen, it'll just stay like that until the same time the main screen timeout configured time passes (5 minutes) and this is getting annoying and somewhat draining a little bit more of my battery. Previously it was working fine and the lock screen would turn off after around 10 seconds or so.
Has anyone faced any similar issues with their phones? I haven't tried a factory reset yet but I'd want that to be a last resort.
Clear Background apps.
It happens when you left some games or apps by pressing home button but it keeps running. Hope they will fix this soon.
Have you tried pressing that little button on the right side of the phone? That usually helps.
Yeah...I already tried that with no luck. Even tried uninstalling some recent apps in case one of them was cause but it didn't work either. Any other suggestions?
The issue isn't with turning the phone screen off by pressing the power button, it's the lock screen itself not turning off after a few seconds when it usually does.
I'm having the same problem, had good lock installed thought that may have been the problem but after uninstalling that I'm still having the same problem with samsungs oem lock screen. I too would like an answer or fix for this. also to note, in developer options the stay awake is off and no apps running in the background.
I am having this problem now also. The screen will lock, but the display stays on but dimmed. I can tap the screen and it will get bright. Now I must click the side button every time I set my phone down or the screen will drain the battery.
I'm facing exactly the same issue. When the screen is locked, it stays on for the same time confirmed to when its unlocked. For example, 1 minute, instead of 10-15 seconds.
Any workaround discovered for this?
Did anyone find a solution to this problem?
I thought that I might've been the only one! This problem only appeared on my phone after the Nougat update, and it's extremely annoying as I rely on notifications waking the screen for my main messaging app.
joelnet said:
I am having this problem now also. The screen will lock, but the display stays on but dimmed. I can tap the screen and it will get bright. Now I must click the side button every time I set my phone down or the screen will drain the battery.
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Click to collapse
Hello, I am having the same issue in my Redmi note 11 pro plus Phone. In my case The screen will lock but display stays on with dimmed light. Usually it is not visible during day, but in dark room its visible. And it stays the same way whole night. And battery is fully drained and phone is turned off. Is there a solution for this??

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