fingerprint scanner not worked! - Android Q&A, Help & Troubleshooting

Hello friends
I have a leagoo T8s smartphone.
I flashed this phone today.
But after finishing the flash, the fingerprint scanner was not detected and did not work while I installed the stock ROM on it.
Please advise me how to fix the problem of not recognizing the fingerprint sensor
Thank You.

Related

an error has occurred with the fingerprint sensor

I just install marshmallow rom in to my s6 edge SM-G925W8. When i was going to use fingerprint lock then its (an error has occurred with the fingerprint sensor) pop up on screen ....
Plz help me i m worried abt it....
Xda member plz help me.....
solution
I fix this problem...
Actually when I use the option of ×#0×# then in sensor .... when check the finger print sensor.. it's always pass then see following option ....
Firstly factory reset then flash stock firmware via Odin.... then it will work....
Plz like it if it's work.

Sensors stopped working - Help!

Hi everyone, I'm facing a severe issue with my Redmi Note 3 (Snapdragon variant).
Few days ago I noticed that the screen wasn't auto-rotating anymore, but I tought it was a temporary problem of my ROM (AICP official, latest nightly), so I passed by.
Yesterday I tried to format the phone from recovery and reinstall the ROM, without luck, the rotation wasn't working.
Then I tried to reset to the fastboot ROM (MIUI 7 6.3.17) through Mi Flash, I booted, and... now EVERY sensor has stopped working. Phone doesn't rotate, in cardboard app it doesn't move, brightness does not adjust automatically, screen doesn't turn off during call when putting the phone on the ear, and the compass is not working.
Also, apps like Lux say the value is -1 everytime, apps to re-calibrate the proximity sensor crash at startup, and I have a Settings force close when I enter security options to set up my fingerprint (only in CM13, from the MIUI7 setup I can register my fingerprint)...
So, I unlocked the bootloader then I tried to install MIUI8 but, IMEI was modified and WiFi wasn't working. I installed CM13 and restored NVRAM and everything (apart from the sensors) was working.
Now I re-flashed again with Mi Flash, and I can't SETUP the phone, because WiFi and cellular data are not working, and the phone is matched with my Mi account, and won't activate without login.
How can I fix all this mess? If needed, I can also take apart the phone.
Please, everyone, this is very urgent!
Thank you all in advance, and sorry if there are errors, as I'm writing this quickly.
HELL YEAH!
Ok, everyone, nevermind.
I FIXED IT!
It was the persist image that was corrupted. My bad I tought Mi Flash would reset everything, even persist. But I wasn't right.
I looked into the "flash_all.bat" script and "flash persist" wasn't there. Thanks Xiaomi for the headache.
2 days of searching on Google and I didn't find this thread, and I don't know how this is possible.
Now I just have to understand why this happened totally random.
Everyone that has this problem, refer to the thread up here, works like a charm!
Bye!
Thanks for sharing your solution. I learned something new.
Guys i have the same problem with my Redmi Note 4 when i rooted it successfully its sesor didn't work but after unrooting it again works well. So is there is any way to root the device without sensor fail???
SayanKar said:
Guys i have the same problem with my Redmi Note 4 when i rooted it successfully its sesor didn't work but after unrooting it again works well. So is there is any way to root the device without sensor fail???
Click to expand...
Click to collapse
Which root solution are you using?
SayanKar said:
Guys i have the same problem with my Redmi Note 4 when i rooted it successfully its sesor didn't work but after unrooting it again works well. So is there is any way to root the device without sensor fail???
Click to expand...
Click to collapse
Have you tried rooting with magisk?
J3is said:
Ok, everyone, nevermind.
I FIXED IT!
It was the persist image that was corrupted. My bad I tought Mi Flash would reset everything, even persist. But I wasn't right.
I looked into the "flash_all.bat" script and "flash persist" wasn't there. Thanks Xiaomi for the headache.
2 days of searching on Google and I didn't find this thread, and I don't know how this is possible.
Now I just have to understand why this happened totally random.
Everyone that has this problem, refer to the thread up here, works like a charm!
Bye!
Click to expand...
Click to collapse
Hi, the thread has been removed. Can you relink it?
Thanks a lot!!
J3is said:
Ok, everyone, nevermind.
I FIXED IT!
It was the persist image that was corrupted. My bad I tought Mi Flash would reset everything, even persist. But I wasn't right.
I looked into the "flash_all.bat" script and "flash persist" wasn't there. Thanks Xiaomi for the headache.
2 days of searching on Google and I didn't find this thread, and I don't know how this is possible.
Now I just have to understand why this happened totally random.
Everyone that has this problem, refer to the thread up here, works like a charm!
Bye!
Click to expand...
Click to collapse
This tip helped me fix my device after an year!!

Problem with fingerprint scanner

Hi,
I have a problem with fingerprint scanner.
Generalny all works but while i use right index finger, the scanner doesn't recognize the finger.
I return to stock rom but it still doesn't work.
What I should do? Yestorday I installed LineageOS and this problem activated after I installed substratum theme engine. Befor it works perfectly.
My secondly Redmi Note 4x works perfectly.
fufus said:
Hi,
I have a problem with fingerprint scanner.
Generalny all works but while i use right index finger, the scanner doesn't recognize the finger.
I return to stock rom but it still doesn't work.
What I should do? Yestorday I installed LineageOS and this problem activated after I installed substratum theme engine. Befor it works perfectly.
My secondly Redmi Note 4x works perfectly.
Click to expand...
Click to collapse
Well, EZ fix :
Screen lock > Register unrecognized finger
and add patern/pin
then go to settings
and don't delete the fingerprints
but remove the screen lock itself
and then add screen lock and register fingerprint
fufus said:
Hi,
I have a problem with fingerprint scanner.
Generalny all works but while i use right index finger, the scanner doesn't recognize the finger.
I return to stock rom but it still doesn't work.
What I should do? Yestorday I installed LineageOS and this problem activated after I installed substratum theme engine. Befor it works perfectly.
My secondly Redmi Note 4x works perfectly.
Click to expand...
Click to collapse
go to data/system/. delete two files with extension .key. now delete other files having word"locksettings" in there full name. reboot. now again add your fingerprint.
I tried method 1 and 2. Unfortunetly each dosn't work.
I instaled dev miui9 and the fingerprint scanner still dosn't work with my right index finger.
EDIT:
I tried again method 2 and now it works! Thanks bro!
Worksss, very strange problem but easy fix

Fingerprint not working (after reboot)

Hi,
My fingerprint stopped working randomly yesterday, so I clean flashes the LOS rom and it was solved but after sometime FP stopped working again. I went on to add new fingerprint and it started working but again stopped working after a reboot. Right now I flashed ViperOS and it was working fine but again stopped working after a reboot. Is there any solution to this?
Thnx in advance

Fingerprint sensor doesnt work

So my fingerprint sensor stoped working properly in the rr rom then i installed the google experience 8.0 rom and still the same problem. I've already tried changing the modem but no luck. It apears a message saying "fingerprint sensor became unavailable"
Again the same thread. Use a search button.
How long it takes after u flash rr ROM? I am using slim7. Still work here

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