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
Related
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/
Hi,
I have problem with fingerprint reader on my elephone p9000. I am using latest softer version and i have this problem from the begining.
So when i try to add new fingerprint it recognize my finger every fifth time, and after i set my fingerprint and lock phone it recognize and unlock phone first few time, and after that i seems like he forget fingerprint and i cannot use it.
Is this system or hardware problem?
After update i factory reset my phone but this does not help.
I find youtube video with the same problem
If you have any sugestion please.
I have the same problem too. I think you need to press the finger well for getting a good result.
I hope that this problem have a solution.
Sent from my P9000 using Tapatalk
I had loads of problems with the fingerprint sensor.. I was scanning itself (no finger on the sensor, vibrates and returns "too many attempts), working only when the screen is on, not working at all, working 1/10 times I tried, etc...
My problems were all software related (some were registering technique related). It's really not possible that two phones that you have ordered had the same problem.
I have managed to fix mine by combining Resurrection Remix and DarkSense Kernel 1.2.0, now it works 100% of the time. (1.1.0 rendered the fingerprint sensor useless). XPosed and ROM Toolbox seemed to break the fingerprint sensor as well.
I know it might sound silly, but try a different fingerprint registering technique. What I do is I lightly touch the sensor with the centre of my fingertip for the first time, lift the finger up, rotate it by ~5 degrees and lightly touch it again. Do that until most of the finger tip is registered. I'm only saying this because I've seen people touching and "smearing" the fingerprint sensor, expecting it to work. Imagine it's a camera, give it pictures of your fingerprint.
I don't know if this is useful, but after a few months of trial-and-error I've managed to find what was wrong with mine.
I just installed the AEROM V5 and now it works about 90% of the time, which is more than my Nexus 5X did.
DISCLAIMER!!!
In any way I am not responsible if you somehow destroy your phone by following this instruction.
If you don't know what you are doing this instruction is not for you...
Recently my fingerprint scanner stopped working. After few days of partial functionality i got message fingerprint hardware isn't present. There was no more option for fingerprint in phone settings .
So first i factory reset my CM13 build - fingerprint scanner didn't work, no option for fingerprint
Then i installed CM14.1 - fingerprint scanner didn't work, no option for fingerprint
Then i installed MIUI 6.9.29_v8-6.0 - fingerprint scanner didn't work, no option for fingerprint.
While in MIUI i made SELF-TEST with *#*#6484*#*# - fingerprint scanner test failed.
That was final prove that it's hardware and not software problem.
My conclusion was that the problem is most probably fingerprint scanner failure or maybe fingerprint scanner connection problem. In my case it was connection problem between fingerprint scanner and pcb. So this is how I solve this problem.
It's easy to do it and only basic skills to disassemble/assemble the phone are needed.
1. Remove phone cover (use suction cup).
2. Unscrew 7 screws (marked red)
3. Remove botom plastic cover (marked red)
4. Push (with finger) fingerprint scanner connection to pcb board (marked red)
5. Assemble phone in revers order
That's it. After this procedure my phone recognize fingerprint scanner again.
For people that this doesn't work it's probably faulty fingerprint scanner and it probably has to be replaced.
I found figerprint scanner on aliexpress for $8...
https://www.aliexpress.com/item/For...ement-For-Xiaomi-Mi5-M5-Mi-5/32712123002.html
Greetings...
Hello, I would like to as if this works for you? I'm facing the same problem with my device, and I really really need some help
Sure it worked for me...
I wouldn't write the guide if it didn't work for me....
Sent from my MI 5 using Tapatalk
what strange about my device is sometimes the fingerprint hardware is detected sometimes it doesn't it's very weird
Before trying this out, just try holding power button for 15s until the phone turns off, and wait a bit.
This happened to me once, and it was probably caused by static electricity or something like that. Holding the power button discharged it, and it started working again.
frotna said:
DISCLAIMER!!!
In any way I am not responsible if you somehow destroy your phone by following this instruction.
If you don't know what you are doing this instruction is not for you...
Recently my fingerprint scanner stopped working. After few days of partial functionality i got message fingerprint hardware isn't present. There was no more option for fingerprint in phone settings .
So first i factory reset my CM13 build - fingerprint scanner didn't work, no option for fingerprint
Then i installed CM14.1 - fingerprint scanner didn't work, no option for fingerprint
Then i installed MIUI 6.9.29_v8-6.0 - fingerprint scanner didn't work, no option for fingerprint.
While in MIUI i made SELF-TEST with *#*#6484*#*# - fingerprint scanner test failed.
That was final prove that it's hardware and not software problem.
My conclusion was that the problem is most probably fingerprint scanner failure or maybe fingerprint scanner connection problem. In my case it was connection problem between fingerprint scanner and pcb. So this is how I solve this problem.
It's easy to do it and only basic skills to disassemble/assemble the phone are needed.
1. Remove phone cover (use suction cup).

2. Unscrew 7 screws (marked red)
3. Remove botom plastic cover (marked red)

4. Push (with finger) fingerprint scanner connection to pcb board (marked red)
4. Push (with finger) fingerprint scanner connection to pcb board (marked red)

2. Unscrew 7 screws (marked red)

3. Remove botom plastic cover (marked red)

4. Push (with finger) fingerprint scanner connection to pcb board (marked red)


5. Assemble phone in revers order
That's it. After this procedure my phone recognize fingerprint scanner again.
For people that this doesn't work it's probably faulty fingerprint scanner and it probably has to be replaced.
I found figerprint scanner on aliexpress for $8...
https://www.aliexpress.com/item/For...ement-For-Xiaomi-Mi5-M5-Mi-5/32712123002.html
Greetings...
Click to expand...
Click to collapse
Just pull up the fingerprint connector and then plug it to the board right? Mine still undetect on hardware test, it says both failed.. strange, i dont think its hardware problem.. but i dont know
frotna said:
DISCLAIMER!!!
In any way I am not responsible if you somehow destroy your phone by following this instruction.
If you don't know what you are doing this instruction is not for you...
Recently my fingerprint scanner stopped working. After few days of partial functionality i got message fingerprint hardware isn't present. There was no more option for fingerprint in phone settings .
So first i factory reset my CM13 build - fingerprint scanner didn't work, no option for fingerprint
Then i installed CM14.1 - fingerprint scanner didn't work, no option for fingerprint
Then i installed MIUI 6.9.29_v8-6.0 - fingerprint scanner didn't work, no option for fingerprint.
While in MIUI i made SELF-TEST with *#*#6484*#*# - fingerprint scanner test failed.
That was final prove that it's hardware and not software problem.
My conclusion was that the problem is most probably fingerprint scanner failure or maybe fingerprint scanner connection problem. In my case it was connection problem between fingerprint scanner and pcb. So this is how I solve this problem.
It's easy to do it and only basic skills to disassemble/assemble the phone are needed.
1. Remove phone cover (use suction cup).
2. Unscrew 7 screws (marked red)
3. Remove botom plastic cover (marked red)
4. Push (with finger) fingerprint scanner connection to pcb board (marked red)
5. Assemble phone in revers order
That's it. After this procedure my phone recognize fingerprint scanner again.
For people that this doesn't work it's probably faulty fingerprint scanner and it probably has to be replaced.
I found figerprint scanner on aliexpress for $8...
https://www.aliexpress.com/item/For...ement-For-Xiaomi-Mi5-M5-Mi-5/32712123002.html
Greetings...
Click to expand...
Click to collapse
any video tutorial on youtube??
Thank you !!!!:fingers-crossed::fingers-crossed:\
I was facing with this problem, and found this thread.
I followed the guide and it works great now!!!
Thanx for the guide looks very promising.
Mine just died 2 days ago.
Stupid question. By unscrewing the black plastic cover do we loose warranty?
Here: https://www.ifixit.com/Guide/Xiaomi+Mi+5+Repairability+Assessment/79120
Says: "All screws are standard Phillips screws, but removing them will void your warranty."
Thanx in advance.
Sometimes it's just a software issue:
Delete these files:
/data/system/users/0/settings_fingerprint.xml
in /data/system/ delete two files with extension ‘.key‘ and three files with word ‘locksettings‘ in their full name.
Reboot the device and now again add fingerprint. Done Cheers!
Hi!
Just had this problem. Touching Home no longer worked and Fingerprint settings dissappeared after a reboot. Restarting the phone didn't work, but restarting to fastboot and then starting the phone again normally worked when I tried the next day.
andrei80 said:
Hi!
Just had this problem. Touching Home no longer worked and Fingerprint settings dissappeared after a reboot. Restarting the phone didn't work, but restarting to fastboot and then starting the phone again normally worked when I tried the next day.
Click to expand...
Click to collapse
Flash the latest firmware - 8.8.23
I'm still on Nougat(9.5.1.0 .eu). Not convinced to try MIUI10/Oreo yet because of bug reports and the fact that I need the phone working well and don't have the time to spend days trying unstable firmwares. The only thing that bothers me about current fw is the battery life.
Plus, I am convinced this is a hardware problem, even if it's just a momentary bad connection because of sweat getting in the phone or similar.
Hi. How to delete this file? The fingerprint system stop working and i don't resolve
dev>null said:
Sometimes it's just a software issue:
Delete these files:
/data/system/users/0/settings_fingerprint.xml
in /data/system/ delete two files with extension ‘.key‘ and three files with word ‘locksettings‘ in their full name.
Reboot the device and now again add fingerprint. Done Cheers!
Click to expand...
Click to collapse
Hi. How to delete this file? The fingerprint system stop working and i don't resolve
hohuyhung96 said:
Hi. How to delete this file? The fingerprint system stop working and i don't resolve
Click to expand...
Click to collapse
Root Filemanager app or from Recovery
Solved fingerprint scanner not working thanks to this guide, thank you!
Suddenly the fingerprint reader stopped working for me. In security I can choose to enroll new print, but nothing happens.
Anyone know if this could be hardware or some software issue I could test?
Currently on Eragon v 5.0
Try to reboot your device and to delete all your recorded fingers. Also search on XDA the location of the fingerprint data (needs root). Make sure that you do that when the phone is connected to the charger (that's the only way I succeded).
thanks for that.
It seem to start working again after booting in to safe mode, then a hard shutdown with the power menu.
Was already looking for a new phone, but difficult to find one with qi charge and p9000 features at reasonable price
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