Fingerprint sensor not working - Xiaomi Redmi Note 5 Pro Questions & Answers

I flashed RR, but before that I formatted data and wiped all partitions (which may be cause of the problem)...
Now the fingerprint sensor isn't responding to registering my prints.
Tried dirty flashing over the top but that didn't help...
Any quick fix?
Cheers.

Hi,
In having the exact same issue. Flashed aosip and the fingerprint scanner only allowed one fingerprint. I then reflashed RR and now the fingerprint scanner isn't working at all.

Someone reported a similar issues too. It seems after flashing, the fingerprint data is not reset. So if you try to register using the same finger, it won't recognize it anymore, probably because of duplicate data. AFAIK, the fingerprint data is stored locally at trustzone partition (tz). So maybe need to something first after flashing new ROM? Can you please confirm using different fingers?

Desmanto;77097826 Can you please confirm using different fingers?[/QUOTE said:
Different fingers don't work.
The scanner doesn't respond at all
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netRAT said:
Different fingers don't work.
The scanner doesn't respond at all
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Set password to your phone.Then remove the password after a restart.It will fix the fp problem.had the same problem while dirty flashing on miui from and this fixed it

netRAT said:
I flashed RR, but before that I formatted data and wiped all partitions (which may be cause of the problem)...
Now the fingerprint sensor isn't responding to registering my prints.
Tried dirty flashing over the top but that didn't help...
Any quick fix?
Cheers.
Click to expand...
Click to collapse
Same hir sir but mine is AEX, i dont several things but it wont activate the fingerprint scanner its like fingerprint scanner ia not there at all... Huhuhu

Subhashis said:
Set password to your phone.Then remove the password after a restart.It will fix the fp problem.had the same problem while dirty flashing on miui from and this fixed it
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Did that and interestingly enough the password I set refused to unlock the phone after lol...
I then used the AGNi toolbox to wipe all passwords/fingerprints and upon boot the scanner started working again!
Thanks for the heads up!

netRAT said:
Did that and interestingly enough the password I set refused to unlock the phone after lol...
I then used the AGNi toolbox to wipe all passwords/fingerprints and upon boot the scanner started working again!
Thanks for the heads up!
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Sorry for that..It fixed the problem for me though.
Also sorry for laughing like crazy after reading this comment(maybe due to your writing style). My intention was to help and it did the opposite

Hello guys. Facing this issue after clean flashing rom. I used AGNI toolbox but no luck. Any other suggestion?

Related

Fingerprint scanner stopped working

Just recently my fingerprint scanner will decide to stop working. I'll dirty flash my ROM (latest PureNexus) and it'll go back to normal for a little while. Is this a known issue with nougat I'm not aware of?
JeauxAdam said:
Just recently my fingerprint scanner will decide to stop working. I'll dirty flash my ROM (latest PureNexus) and it'll go back to normal for a little while. Is this a known issue with nougat I'm not aware of?
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No, that is not a nougat issue or an issue with that particular rom. It's either firmware, which is in vendor our a failing fingerprint sensor. Try re flashing vendor and see if that helps
I was having that problem too. I tried several things with no luck. The menu option for the fingerprints (under personal/security) disappeared, and since I am clueless about the Nexus phone (iPhone convert), I was baffled. For a separate reason, I had used the ad blocker plus browser to clear the cache of suspicious garbage, then restarted my phone. The fingerprint menu item reappeared, and now the sensor works again....so try clearing your cache.
I got too i fixed by clean fingerprint connector in the phone.

[problem] lost fingerpring settings ?

flashed a couple of roms. seems to have lost fingerprint setings on al of the roms. how it is possible ?
Hardware issue.
I got it before ,just clean fingerprint contact and then its works normal.
Sent from my Pixel using Tapatalk
Yea, I got my scanner wet. Fingerprint settings disappeared for a few days and randomly came back. If the rom doesn't detect the hardware or there is an issue with it those settings won't be there.
nathan96 said:
flashed a couple of roms. seems to have lost fingerprint setings on al of the roms. how it is possible ?
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Remember to use the correct vendor image for the rom you are using.
nathan96 said:
flashed a couple of roms. seems to have lost fingerprint setings on al of the roms. how it is possible ?
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Just wipe dalvik cache in recovery. Fixed it for me

Screen flickers randomly (help please?)

Hey guys,
My screen keeps turning on randomly, and keeps turning off and on while using my phone
I was on havoc OS and it happened when I moved to Nitrogen OS. I tried clean installing multiple ROMs and now on AEX. I tried stock and vantom kernels. Nothing seems to be working. Any idea what's wrong and how to fix it?
P.S. its not a hardware issue. And it tends to happen more when I use heavy applications like pubg.
Would really appreciate the help x
Anyone?
branndonn1 said:
Anyone?
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If its happening on all ROMs even miui then it is a hardware problem
Use miflash to clean install miui without locking the BL to check.
If it still flickers then its a loose cable or something similar failing
Dobsgw said:
If its happening on all ROMs even miui then it is a hardware problem
Use miflash to clean install miui without locking the BL to check.
If it still flickers then its a loose cable or something similar failing
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Hey man, I tried that and still have the issue. Thanks though mate. I'll take it to the service center and see what happens.

fingerprint issues

I am now unable to use the fingerprint reader.
I was on LOS and noticed only one of my saved fingerprints was working, tried to add another and it would get to the last touch and say enrollment was not completed.
After many attempts to delete saved fingerprints and retry setups I now cannot get any fingerprints to save.
I have resorted to restoring stock via miflash to no avail. I even went back to 8.1.
Anyone have any ideas on what I can try?
I've tried reflashing stock a few times and factory resets from there. Nothing seems to help.
Here is the error I am facing
Fixed by flashing persist.img
Not sure why but I can use fingerprint reader with no issues now.
I had previously tried flashing vendor but the problem was still there.
I'm surprised that flashing the stock firmware with miflash didn't fix the problem.
hossman said:
Fixed by flashing persist.img
Not sure why but I can use fingerprint reader with no issues now.
I had previously tried flashing vendor but the problem was still there.
I'm surprised that flashing the stock firmware with miflash didn't fix the problem.
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Can you pass me the download link?
jhonatan.bllz said:
Can you pass me the download link?
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Pulled from stock image files

A50 SM-505G fingerprint not working after root

Hello guys, ive sucessfully rooted ( Magisk 20.3) my device SM-A505G, everything working, excep for fingerprint scanner, sucks i know. Before rooting my phone worked just fine, so its not a hardware related stuff.
I full flashed SM-A505GT binary 5 stock rom (Android 9) on my phone, BL, AP, CP and CSC.
Curious thing is, i went looking for the com.fingerprint service and it is missing, its probably the cause of my nightmare. Do any of you know how to solve this problem? I would install any rom, stock or custom to solve it. It would be easier if i could just install the missing fingerprint service back, i have no clue how to do it.
When i try to add any fingerprint on settings menu or after factory reset it says: "An error has occurred with the fingerprint sensor. If this message appears repeatedly, restart your device". Ive restarted multiple times and problem persists.
PS: I tried to flash another stock rom, binary 5, now from SM-505G, and that did not work aswell, everything works, except from fingerprint scanner. I keep getting the same message i mentioned above. I hope i can restore the fingerprint function of my phone.
Thanks in advance
I did some search and found that installing TWRP after december update patch breaks all the sensors, that is my case. Is there any solution for this problem yet (for A50)? I have no clue how to put my fingerprint scanner to work again. Sorry for my grammar, this is not my main language.
Fire_GT said:
I did some search and found that installing TWRP after december update patch breaks all the sensors, that is my case. Is there any solution for this problem yet (for A50)? I have no clue how to put my fingerprint scanner to work again. Sorry for my grammar, this is not my main language.
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Nope,after twrp update breaks all sensor but not FP.Fp sensor is broken only on gsi.Stock rom workin.There is new twrp with working all sensors.On a50 grup telegram
muhamet said:
Nope,after twrp update breaks all sensor but not FP.Fp sensor is broken only on gsi.Stock rom workin.There is new twrp with working all sensors.On a50 grup telegram
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Im using the stock rom i have downloaded from samfirm, the official one, even when i flashed it without installing twrp my FG was still broken, not working. What i have to do to get it back to work? Could you pls post the link
Fire_GT said:
Im using the stock rom i have downloaded from samfirm, the official one, even when i flashed it without installing twrp my FG was still broken, not working. What i have to do to get it back to work? Could you pls post the link
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@samsunggalaxya50

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