Finger print, back key issue - Lenovo ZUK Z2 (Plus) Questions & Answers

Hello every body
I am using a ZUK Z2 Chinese 64GB variant, os is ZUI 2.5.334ST.
Last night everything was OK and working fine, but this morning U-Touch is gone, finger print and touch capabilities of home key is gone, physically it is ok but there is no back function and long touch and nothing capacitive at all!
Is there anything that I can do to restore its function back to normal?

soft reset. perhaps?

locolyric said:
soft reset. perhaps?
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Tnx for reply, actually I reset it to default factory settings, it did not work out.

You solved the problem? Maybe you can try flashing stock rom.

Related

black screen of death

Hi,
Got my touch pro2 for like 2 days.
This morning suddenly i only got a black screen.
The phone is booting, buttons got light etc. I also hear the start-up sound.
This phone is complete orginal no custom roms etc.
Doe someone know how to fix this? or did my phone just died.?
Mine does it some times. Reset fixes the issue.
tw39515 said:
Mine does it some times. Reset fixes the issue.
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I did a soft-reset.
Can get it hard resetted, maybe because i dont got screen.
Somebody know how to do a hard reset now?
no one?
i did a soft reset, wont help.
hard reset, i dont got screen so i cant see any message.
er1ko said:
I did a soft-reset.
Can get it hard resetted, maybe because i dont got screen.
Somebody know how to do a hard reset now?
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What carrier do you have. If its sprint turn the phone off. Hold down the call button and end call button. With the other hand hold down the power button and it will pop up instructions follow them. Warning tho, it will delete everything on your phone do a back up of your contacts at least.

[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?
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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.
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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

[Q] Note 8.0 N5110 menu, home, and back buttons non-functional

I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche
jgaiche said:
I have a Note 8.0 N5110 that has a strange problem which I don't really how to troubleshoot. When I am using it, the screen will go off just as if I short pressed the power button. I'll press the power button and swipe the screen to unlock. Everything is just as it was when the screen went off, but now the menu, power, and back buttons are non-functional. There are no lights or haptic feedback when I press them. My device was previously rooted before the 4.4.2 update and I had to use odin to install the upgrade. The issue didn't start for a couple of weeks after the update. Once the screen blanks and the buttons become non-functional, minutes later they will start working again; however, at some point, the screen will blank again and the cycle repeats. I have restored to factory settings with no luck resolving the issue. In fact, the screen will blank while I'm still in the setup phase. I really don't know what to try next to resolve this problem and my device is pretty much unusable at this point. Any thoughts or suggestions as to what I could try to fix this? Thanks in advance for any help - Jeff Gaiche
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Couple questions.....do you have a case or screen protector on it? Sometimes these can interfere with the sensor and cause these type of issues.
I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff
jgaiche said:
I do have a case on the device. It's been cased pretty much since I purchased it. I guess it can't do any harm to remove it from the case, just to see if it's possibly interfering with a sensor somewhere. The issue does seem to have been sporadic at first. I'll give that a try. Thanks for the suggestion -- Jeff
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Was just a thought. Otherwise it might be a defective sensor that has to be replaced. Not really sure.
I had the same issue. In my case the buttons still worked if I used the spen. I went back and wiped both the cache and Dalvik Cache*and it resolved the issue.
Sent from my GT-N5110 using XDA Free mobile app

[Q] Home button will not wake phone.

I recently did a factory reset on a rooted G Pro but now the power button will not wake the phone. Everything else works fine and the home button works when the phone is already awake but will not wake the phone. This is still the stock ROM with nothing but root done to it. I can't anything about this exact problem and the threads I have found that were close to the same problem didn't shed any light on it. Can anyone please help?
did u disable screen lock services?
Proz00 said:
did u disable screen lock services?
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Had not intentionally, but it's possible one of the mods installed had. I did a software update and it all started working again. Thanks for trying to help anyway!

Home button issues

Has anyone else had the home button stop working? It has happened to me twice and a reboot restores it. I'm running the stock US Unlocked but rooted RUU.
Sent from my HTC 10 using Tapatalk
fmedrano1977 said:
Has anyone else had the home button stop working? It has happened to me twice and a reboot restores it. I'm running the stock US Unlocked but rooted RUU.
Sent from my HTC 10 using Tapatalk
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I've got the same problem. It worked after a reboot when I first got the phone. I put it in extreme power saver mode the next night and when I went back to standard mode my home button wouldn't work. I'm running everything stock, I'm on T-Mobile, I've tried updates, reboots, and a factory reset. Nothing has worked. I read a thread about an older HTC phone that said clearing the cache on HTC Sense worked for them but that didn't help for me either.
fmedrano1977 said:
Has anyone else had the home button stop working? It has happened to me twice and a reboot restores it. I'm running the stock US Unlocked but rooted RUU.
Sent from my HTC 10 using Tapatalk
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Best thing to do is to send it back for service. In my country (Belgium) HTC has great service. The sooner the better!
I've figured it out. How to fix the finger scanner /home button.
Start in your settings.
Then to apps. In apps hit the soft key in the top right corner of the screen. A new window will open up. Tap "show settings" this will show finger scanner app. Scroll down and tap on that app. Now tap "force stop". After this back out to home screen and restart your phone.
This should fix the problem. I had the same issues with my HTC 10. The scanner/home pad not working at all and no longer showing up in the "settings". I tried calling HTC customer care and did a hard reset..... 4x plus did a complete wipe and recovery. But that wouldn't fix the issue as well. So the other day I followed the top description. Now it works with no glitches.
Hope this helps you out.
Aftermk said:
I've figured it out. How to fix the finger scanner /home button.
Start in your settings.
Then to apps. In apps hit the soft key in the top right corner of the screen. A new window will open up. Tap "show settings" this will show finger scanner app. Scroll down and tap on that app. Now tap "force stop". After this back out to home screen and restart your phone.
This should fix the problem. I had the same issues with my HTC 10. The scanner/home pad not working at all and no longer showing up in the "settings". I tried calling HTC customer care and did a hard reset..... 4x plus did a complete wipe and recovery. But that wouldn't fix the issue as well. So the other day I followed the top description. Now it works with no glitches.
Hope this helps you out.
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Thank you so much, worked like a charm!
Edit: WORKED like a charm for boot up and a few minutes, but then stopped again. I assume I have a software interference issue...
Help
I also have this problem now both my home and finger sensor stopped working. I did a factory reset it worked for a bit and it stop working again. Please help.
Hi,
Similar thing happen to me but instead of the finger print my back button and recent app button stop working. The problem starts after i turn on the extreme power server and turn back off. I have tried hard reset and it will only work for few hours and then the same issue comes up. But i have notice if i open google maps both buttons work. I have not rooted the phone. Dose anyone knows how to fix this issue?.
OS : 6.0.1
Build: 1.95.401.4
Did you try to rescan your fingerprint from different positions. And another thing when used to fingerprint. Do you use smartlock setting? I mean maybe it detects you are in a trusted area and you do not even need to unlock it with fingerprint? Then it just shows the lockscreen when you tap it.
Greetings,
Same issue
asankamadushan said:
Hi,
Similar thing happen to me but instead of the finger print my back button and recent app button stop working. The problem starts after i turn on the extreme power server and turn back off. I have tried hard reset and it will only work for few hours and then the same issue comes up. But i have notice if i open google maps both buttons work. I have not rooted the phone. Dose anyone knows how to fix this issue?.
OS : 6.0.1
Build: 1.95.401.4
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I have this issue as well - and when I open google maps it works fine from there... Possible that it works from other apps but at other times they are really unresponsive. Did you ever fix your problem?
UPDATE - I just turned extreme power saver mode on then off and it seems to have fixed the issue for the moment...
OMG works!
Aftermk said:
I've figured it out. How to fix the finger scanner /home button.
Start in your settings.
Then to apps. In apps hit the soft key in the top right corner of the screen. A new window will open up. Tap "show settings" this will show finger scanner app. Scroll down and tap on that app. Now tap "force stop". After this back out to home screen and restart your phone.
This should fix the problem. I had the same issues with my HTC 10. The scanner/home pad not working at all and no longer showing up in the "settings". I tried calling HTC customer care and did a hard reset..... 4x plus did a complete wipe and recovery. But that wouldn't fix the issue as well. So the other day I followed the top description. Now it works with no glitches.
Hope this helps you out.
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Click to collapse
can't thank you enough you just saved my day! I even registered on this forum just to thank you!

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