I have the standard FPC fingerprint scanner and its a Redmi Note 3 Kate model.
Lately I have noticed that the vibration randomly happens as if it detected a fingerprint at the back even when nothing is touching it. Its not that frequent but once or twice a day.
Another thing seems to be that when phone is not touched in a while (Deep sleep) fingerprint will sometimes not work until you push power button.
Is anyone having same issues?
After using custom rom decided to come back Miui 8 global 7.2.9 beta
My fingerprint sensor does not recognize any fingers
First vibrates then go to lock, pin, or pattern sometime it's goes straight to pin or pattern screen without vibration
It's really annoying me. Any solution often
Off screen lock don't delete fingerprint
Again on screen lock add fingerprint
It doesn't work me?
Waiting for solutions Any suggestions 
mohancel454 said:
After using custom rom decided to come back Miui 8 global 7.2.9 beta
My fingerprint sensor does not recognize any fingers
First vibrates then go to lock, pin, or pattern sometime it's goes straight to pin or pattern screen without vibration
It's really annoying me. Any solution often
Off screen lock don't delete fingerprint
Again on screen lock add fingerprint
It doesn't work me?
Waiting for solutions Any suggestions 
Click to expand...
Click to collapse
Restore or flash fastboot?
Have you upraded the Bootloader? The Radio? Is the Rom (that older Rom) compatible with the Bootloader Version? Check it and write back
sent from my Lovely LG-H960a ATR Android 7 ROM
---------- Post added at 09:03 PM ---------- Previous post was at 09:02 PM ----------
Have you a Message seen about a Security Flag or something?
sent from my Lovely LG-H960a ATR Android 7 ROM
mohancel454 said:
After using custom rom decided to come back Miui 8 global 7.2.9 beta
My fingerprint sensor does not recognize any fingers
First vibrates then go to lock, pin, or pattern sometime it's goes straight to pin or pattern screen without vibration
It's really annoying me. Any solution often
Off screen lock don't delete fingerprint
Again on screen lock add fingerprint
It doesn't work me?
Waiting for solutions Any suggestions 
Click to expand...
Click to collapse
Did you try this : 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
mohancel454 said:
After using custom rom decided to come back Miui 8 global 7.2.9 beta
My fingerprint sensor does not recognize any fingers
First vibrates then go to lock, pin, or pattern sometime it's goes straight to pin or pattern screen without vibration
It's really annoying me. Any solution often
Off screen lock don't delete fingerprint
Again on screen lock add fingerprint
It doesn't work me?
Waiting for solutions Any suggestions 
Click to expand...
Click to collapse
Go to twrp. Then enter file manager. Navigate to /data/system/. Now delete the following files:
password.key
pattern.key
locksettings.db
locksettings.db-shm
locksettings.db-wal
This will clear all saved pattern/pin/fingerprints.
You can boot into your system and set them again.
Sent from my Redmi Note 4 using Tapatalk
I've read several old posts saying it can't be done, but if memory serves MIUI 10 on my Mi Mix 3 didn't fire the vibrate mechanism when I used fingerprint unlock.
I'm now on Lineage 16 and the vibrate motor is triggered when I use the fingerprint sensor.
Having said that, I'd still rather be on Lineage than MIUI.
Hello everyone,
The lift to wake up feature on my Redmi Note 9 pro stopped working almost a week after I had bought it. The screen doesn't wake up even when I am continuously keeping the lift to wake up setting ON . Can someone please help me with it. I cannot determine whether it is a hardware issue or a software. Thanks in advance..
A simple reboot should fix it
I tried to reboot it , but it didn't work even after that. Thanks anyway
I have my Redmi Note 5 configured to awaken to home screen from standby using the fingerprint scanner but if I leave my phone in standby for a couple of days or so and go to use the fingerprint scanner to unlock to my home screen, I get the password prompt instead and have to unlock that way. Is this a common issue and is there a fix? I'm still using MIUI 10.3.2 because the latest versions run slightly sluggishly compared to earlier.
After 72 hours miui ask for the pin