Issues with fingerprint - LG G5 Questions & Answers

Hi, I would know if you have this issue too.
My fingerprint sensor works well, no problem about the speed or recognition.
But, often, it just wont work, I mean there is the vibration but it wont unlock the phone, at the bottom there is: can not use the fingerprint (I don't know in english it's in french).
I have to unlock with my code or layout. I lock again and now it works!
It works for a moment, and maybe one hour later it doesn't work again I have to unlock manually to make it work again.

Try removing and re-adding your fingerprint, make sure you scan all parts of your finger.
It is not recognising your finger as often as it should.

I have a same problem. If I turn off/restart my phone the fingerprint stop working. I must re-adding or again restart the phone to start work again. But if working, he work good until next restart. Sometimes after turn off/restart he continues to work. I think it has its own opinion when to work and when not

When I say there is an issue, it's not about the recognition.
When it doesn't, the screen don't turn on and double vibration, it's ok.
But sometimes, the screen turn on, and just say that is not possible to use fingerprint (with one vibration)
I just deleted and set again my fingerprint, and the problem is still here.
So it recognize my fingerprint (screen on and one vibration) but doesn't want to unlock, just say it's not possible to use fingerprint..

This happens to me only first time after reboot.
I think that's a security, and a will from LG. So it's not a bug, it's a feature

RealLordK1 said:
This happens to me only first time after reboot.
I think that's a security, and a will from LG. So it's not a bug, it's a feature
Click to expand...
Click to collapse
yes I think that happen when the state change, like wifi, BT or other.
But it's annoying when it happens 20 times per day.
I hope I'll be able to change that with root..

anych said:
I have a same problem. If I turn off/restart my phone the fingerprint stop working. I must re-adding or again restart the phone to start work again. But if working, he work good until next restart. Sometimes after turn off/restart he continues to work. I think it has its own opinion when to work and when not
Click to expand...
Click to collapse
As others have said. I think it's a security feature that makes you use the lock code after a reboot. My G5 does the same things as well as my iPhone 5S.
As for the fingerprint scanner misfiring. I noticed that while I'm using the always on display. When I first take the phone out of my pocket. It takes a second for the always on display to pop up. It seems like the fingerprint won't read my print until that display pops on.
You're issue sounds a little different. I'd just figure I'd mention some of my findings.

I just want to remember that my issue is not about a reset. But all day long.
So at this moment I'm the only one who have this issue.
(I also have the 10c update and issue still here)
Thanks for your replys anyway.

I get it about 2 or 3 times a week & like you, not after a reboot. It works again after pin entry.
Strange but infrequent enough not to bother me.
Sent from my LG-H850 using Tapatalk

If in future you actually face any fingerprint sensor issue then this link would help you:
http://recomhub.com/blog/lg-g5-fingerprint-sensor-not-working/

Related

help! accidental touches to the screen during calls

when I use the original oxygenos, I always happens (in each call) that there are unintentional touches the screen that usually make me turn the microphone off or pause the call, all this makes it impossible to make a phone call.
I tried doing upgrades, downgrades, cache cleaning, reset but nothing!
The only way to solve it is to use the CyanogenMod 13 where the bug does not occur but.
can someone help me with this problem ??? I like the stock rom and I would use it without problems
Lock the phone after acepting or making a call, maybe? Ive never had such issues with OOS.
aredpanda said:
Lock the phone after acepting or making a call, maybe? Ive never had such issues with OOS.
Click to expand...
Click to collapse
Yes! the only way is to turn off the phone with the power button after starting the conversation, it is still very frustrating!
If I type a number and make e call the display will immediately go off when I put the phone near the ear. If I just keep it in the hand it will not go off. I guess this is what happen by default. Maybe it has to do with some kind of sensor you turn off on your settings in OOS?
fotjon said:
If I type a number and make e call the display will immediately go off when I put the phone near the ear. If I just keep it in the hand it will not go off. I guess this is what happen by default. Maybe it has to do with some kind of sensor you turn off on your settings in OOS?
Click to expand...
Click to collapse
I think the screen is responsive to the touch in some cases despite the proximity sensor turns off the screen, it's a pretty serious problem, those of OnePlus are willing to fix it, but they will leave at least 30 days.
I do not understand if it is a sofware or hardware problem because with the various tests I did the sersore proximity seems to work fine, but I can not make a phone call without any problems

Second s9 since launch with the same exact problem!

I bought an S9+ on launch day long story short it lasted 2 weeks before it would just shut down itself anytime you put it to sleep (screen off). I figured out after doing some tests and research that it would only do it when the fingerprint scanner was turned on. I sent it to Samsung which if anyone has had the pleasure of dealing with their customer service knows it's a nightmare to say the least. At least 2 week turnaround time but in the end they did come through and send me a brand new in box s9+.
Fast forward about a month later the new one is doing the EXACT same thing. If I turn the fingerprint scanner off and just use facial unlock it works fine. I really don't want to go through their customer service again and be without a phone for 2 weeks. I think this very well could be a software issue though factory reset does not solve the issue neither does erasing fingerprint and re entering them.
Has anyone else experienced this? I saw searching google that it is actually an issue others have had and like me, their replacements have all done the same thing. I am yet to find a thread with a solution though. What do you guys think? I'm actually wondering if perhaps rooting it and putting a custom rom on it would help.
Honestly, I have not heard of this before. After you try with fingerprint can you turn the device on at all?
Do you have any apps that may in the background that captures button inputs or fingerprint apps that capture slide movements or anything?
Scott said:
Honestly, I have not heard of this before. After you try with fingerprint can you turn the device on at all?
Do you have any apps that may in the background that captures button inputs or fingerprint apps that capture slide movements or anything?
Click to expand...
Click to collapse
Nope it seems to go off within seconds with the fingerprint scanner enabled. Even if I try to wake it up with the power button it seems to be dead. I've had the phone for about a month now and haven't recently added any new apps. I don't believe I have any apps that would be capturing anything. Is there any app I could use to check and see if perhaps I have something app related thats causing this?
I do believe it's gotta be software related.
You can type *#0*# in the dialer, then go to sensor and scroll down to find fingerprint test

Fingerprint sensor problem

I lost all access to the fingerprint sensor. I could not use it for logon . No app could see the sensor. One test app said there was no fingerprint sensor. The Settings menu didn't show the fingerprint items, although I could search for the items. When the menus were found, no fingerprint were shown as registered and I could not add any.
I checked everything and couldn't find anything. I checked that the sensor for dirt and grease.
Huawei support suggest restarting the MediaPad. I did this and everything worked again.
Did I feel embarrassed!
Moral is: if in doubt, turn it off and then on again.
Chris
Ha ha I thought you were going to need a factory reset but like I keep telling my kids the first thing to try is turn it off then back on, 90% of problems get fixed by this lol

Possible solution for still existing fingerprint scanner issues?

Hi,
I've read this thread and disabled battery optimisation for "com.samsung.android.biometrics.app.setting"* on my Note 10+ and Tab S6 (Wifi).
On both devices the fingerprint scanner is faster :good:
... and it seems to fix recurrent unlock problems with my Tab S6 too
* on some devices it's named "com.samsung.android.biometric"
Important:
it's not known yet if this might have any negative side effects (as battery drain or burning out the fingerprint sensor).
I also did it. But it doesn't make the fingerprint scanner faultless...
Hi, am I the only one having a problem with the fingerprint reader after upgrading to Android 10? ?
I have probably tried everything. Factory reset and clear cache partiotion do not help. The problem returns randomly. The reader stops working, and when I try to get to the settings I have the message: "Finger print sensor calibration needed " or "finger print sensor doesn't respond, try to reboot your device . If the problem persists, contact support "
I checked everywhere and there is no such thing as calibrating the fingerprint reader. Technical support also couldn't help me with the problem, they only recommended to send the tablet for service. ?
The problem has never appeared before the update so I bet that the problem is new software.
Any advice what else I could try?
The reader, when it starts to work, works much better than before the update, unfortunately more and more often it does not work at all.
The strangest thing is that sometimes it starts working after a regular restart. I have no idea what to think about it.
Something similar... It sometimes works like a charm. It sometimes stops working, but no message and no way to use it in order to activate the tab. In that case I have to use an alternative method to. I suppose a fix could be released after this update to Android 10...
solved
Hi there,
I've solved this issue. I have tab s6 4-5 month and I couldn't even register the fingerprint. today I tried again and I found out that you have to touch the scanner very gently, do not press firmly. so I could register 3 fingerprints and it is working. even with unlocking if you press harder it won't work you have to touch slightly and it is working. still it is not reliable as other scanners but it works. i'm providing the video, you can see when I touch gently it is working, but If I press harder it won't register.
h t t p s://drive.google.com/file/d/1BegH3jbh3QxAuwLqSY8fdiHFbZ0MU2Zc/view?usp=sharing

Question Lock screen asks for pin

Hi,
I am using fingerprint sensor and smart unlock but several times a day and every morning the phone is manually locked and I have to enter my pin again. Is there a setting I am missing here?
same here. also it keeps asking pin through the day!
also I'd appreciate if I won't need to confirm pin once is entered correctly (just numbers then unlock instantly)
stephanstricker said:
Hi,
I am using fingerprint sensor and smart unlock but several times a day and every morning the phone is manually locked and I have to enter my pin again. Is there a setting I am missing here?
Click to expand...
Click to collapse
Is it that your phone is rebooting? There have been people reporting random reboots with their devices ..
originali said:
also I'd appreciate if I won't need to confirm pin once is entered correctly (just numbers then unlock instantly)
Click to expand...
Click to collapse
Thats true, the extra confirming is annoying as hell...I think smart lock introduced this issue, so I will try to turn it off for now...
mang0 said:
Is it that your phone is rebooting? There have been people reporting random reboots with their devices ..
Click to expand...
Click to collapse
I have not noticed any reboots yet but I dont think that the problem. I still see notifications on the lock screen. I believe that would not be the case if the phone rebooted.
stephanstricker said:
Hi,
I am using fingerprint sensor and smart unlock but several times a day and every morning the phone is manually locked and I have to enter my pin again. Is there a setting I am missing here?
Click to expand...
Click to collapse
Smart lock relocks after 4 hours of inactivity and apparently defaults to PIN or Pattern, not FP.
Tool Belt said:
Smart lock relocks after 4 hours of inactivity and apparently defaults to PIN or Pattern, not FP.
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Click to collapse
That explains it, but it is not smart at all :-/
Tool Belt said:
Smart lock relocks after 4 hours of inactivity and apparently defaults to PIN or Pattern, not FP.
Click to expand...
Click to collapse
Doesn't seem to matter whether it's active or inactive. It seems to re-lock and require a PIN every 4 hours.
Extremely annoying. SmartLock on my Samsung phone didn't behave like that.
Disabling smart lock fixed it for me, make sure are smart lock triggers are gone
stephanstricker said:
Disabling smart lock fixed it for me, make sure are smart lock triggers are gone
Click to expand...
Click to collapse
So now it is always locked and the FP is the default? I like having it unlocked at Trusted Places for 4 hours better.
stephanstricker said:
Disabling smart lock fixed it for me, make sure are smart lock triggers are gone
Click to expand...
Click to collapse
I might just try this. I used smartlock on my Galaxy s20 FE because the fingerprint sensor was way down at the bottom and was difficult to reach, so I would just press the power button and swipe up on the screen.
However, I discovered with the Pixel 6, that when it's smart locked, if you just touch the fingerprint sensor icon, it turns on the screen and opens the phone. (without it actually triggering the fingerprint sensor) No pressing the power button or swiping required.
So I've started getting into the habit of just pressing the fingerprint icon anyway, even when it's unlocked with smartlock. So, as long as the fingerprint sensor is reliable enough, I don't really need the smart lock. I would be doing the same motion to unlock it with the fingerprint. (Although it will be a little slower and possibly a bit more unreliable)
Well, I don't think it's smartlock related. I turned off smartlock a half hour ago and used the fingerprint sensor to unlock it several times since then, and then a couple of minutes ago, it forced me to enter the PIN. Almost exactly 4 hours after the last time I had to enter a PIN.
I was wondering exactly the same... it's a weird behavior.
I think it may be a 'feature'. A fingerprint is considered somewhat less secure by Google. Ironic, given on a P6 it seems to lock folk out a lot of the time!
Understand fingerprint security - Pixel Phone Help
Your fingerprint data is stored securely and never leaves your Pixel device or Nexus phone. Your fingerprint data isn't shared with Google or any apps on your device. Apps are notified only wheth
support.google.com
As you say, annoying though.
RichPA said:
Well, I don't think it's smartlock related. I turned off smartlock a half hour ago and used the fingerprint sensor to unlock it several times since then, and then a couple of minutes ago, it forced me to enter the PIN. Almost exactly 4 hours after the last time I had to enter a PIN.
Click to expand...
Click to collapse
Did you reboot the phone after changing the smartlock setting? Perhaps the phone has held onto that setting in memory.
i am having the same nightmare here. Considering i am wearing gloves most of the time, i need to usesmart unlock. but then every few hours i need to type pin, plus i need to press entre. it really breaks flow here
tiantianisfox said:
i am having the same nightmare here. Considering i am wearing gloves most of the time, i need to usesmart unlock. but then every few hours i need to type pin, plus i need to press entre. it really breaks flow here
Click to expand...
Click to collapse
Smart lock resets every four hours, which requires you to enter your PIN to unlock for another four hours.
Confirming a pin makes it more secure, as now the number of digits in your pin is also hidden. In theory, this would make a 4 digit as secure a as 10 digit one as a potential thief would not know which to try.

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