Fingerprint reader stopped working - Xiaomi Mi A1 Questions & Answers

I have been very happy with my Mi A1 but now the fingerprint reader has stopped working. Not sure why.
When I try to enroll my fingerprints, I get the following:
In Security and Settings, I click om Fingerprint
I get the 'Unlock with fingerprint' screen, I click NEXT
I get the 'Unlock section' screen. I have tried all of them but it does not matter. But let's click on PIN
I get the 'Secure start-up'' screen. I can click on YES or NO - does nto seem to matter. But let's click on NO.
I am asked to choose my PIN. I do so, twice.
I get the 'Notifications' screen. I choose show all notofcations and hit DONE
I get the 'Find the sensore' screen. I hit NEXT
I get the 'Let's Start' screen.
This is where it goes wrong. I put my finger on the sensor and I never get the vibration feedback so it seems like the sensor is disabled?
When I first got the phone - this worked fine.
Any ideas on how to check the sensor status or how to fix this? Thanks!
Dave

UKLonghorn said:
I have been very happy with my Mi A1 but now the fingerprint reader has stopped working. Not sure why.
When I try to enroll my fingerprints, I get the following:
In Security and Settings, I click om Fingerprint
I get the 'Unlock with fingerprint' screen, I click NEXT
I get the 'Unlock section' screen. I have tried all of them but it does not matter. But let's click on PIN
I get the 'Secure start-up'' screen. I can click on YES or NO - does nto seem to matter. But let's click on NO.
I am asked to choose my PIN. I do so, twice.
I get the 'Notifications' screen. I choose show all notofcations and hit DONE
I get the 'Find the sensore' screen. I hit NEXT
I get the 'Let's Start' screen.
This is where it goes wrong. I put my finger on the sensor and I never get the vibration feedback so it seems like the sensor is disabled?
When I first got the phone - this worked fine.
Any ideas on how to check the sensor status or how to fix this? Thanks!
Dave
Click to expand...
Click to collapse
Same problem ¿Any solution?

After installing the update to the July patch it started to work normally
Después de instalar la actualización al parche de julio empezó a funcionar en forma normal

Related

Gingerblur help!

so I just got the atrix today, rooted it, and then installed gingerblur.
It seemed to work fine, but now when it rebooted for the first time as gingerblur it says the finger print scanner is initializing and it won't let me unlock it manually. The screen then goes black and the only way to turn it back on is to take out the battery and put it back in, but it just does the same thing.
Did i already screw up my phone?
would it be bad to wipe data/factory reset with gingerblur on it?
owent92 said:
would it be bad to wipe data/factory reset with gingerblur on it?
Click to expand...
Click to collapse
Should be able to use RSD Lite to flash back to 4.1.26, then update from there. All instructions are in forum.
Sent from WinBorg 4G using XDA Premium App
owent92 said:
so I just got the atrix today, rooted it, and then installed gingerblur.
It seemed to work fine, but now when it rebooted for the first time as gingerblur it says the finger print scanner is initializing and it won't let me unlock it manually. The screen then goes black and the only way to turn it back on is to take out the battery and put it back in, but it just does the same thing.
Did i already screw up my phone?
Click to expand...
Click to collapse
I had/have the EXACT same issue. Here's what I can tell you I did to "work around" the issue. As the phone is booting up, continually swipe your finger over the scanner. Ultimately your finger will be scanned and the phone will unlock. Then go into settings and change your screen lock to something other than the finger scanner. This will allow you to unlock the phone and have it work again.
Ultimately when the screen goes black it's just the display timing out--but there is something that goes on with the finger scanner that won't let you wake up the display.
I'd still like to know why GingerBlur does this to my finger scanner (and yours apparently) but not others.

Security flaw

I have the fingerprint scan enabled in the lockscreen. I realized that to bypass that, all you have to do is press the home button twice to the camera mode, from there just hit the home button again and it takes you to your homescreen. That is a huge flaw that I cannot understand why it has not been addressed.
Nope, mine stays locked after leaving camera app. I have t mobile version.
Not on my sprint variant.
louie68 said:
I have the fingerprint scan enabled in the lockscreen. I realized that to bypass that, all you have to do is press the home button twice to the camera mode, from there just hit the home button again and it takes you to your homescreen. That is a huge flaw that I cannot understand why it has not been addressed.
Click to expand...
Click to collapse
I can confirm this is true with tmobile version..although it doesnt seem to work all the time.
This should really be addressed
Sent from my SM-N920T using XDA Free mobile app
Doesnt work on my AT&T note5, open up the camera and I can take pictures, once it's closed it locks again.
Op. Did you check your timer on your fingerprint lock? It is possible you are doing this inside the unlocked window before it locks itself.
OK I figured it out. It may still be a flawless but it's not a security issue. If you test it out with a finger that is not registered to the phone it won't work. In other words the only person who could access the phone doing this is the owner of the phone using one of the fingers that is registered on the phone.
calvin35 said:
OK I figured it out. It may still be a flawless but it's not a security issue. If you test it out with a finger that is not registered to the phone it won't work. In other words the only person who could access the phone doing this is the owner of the phone using one of the fingers that is registered on the phone.
Click to expand...
Click to collapse
Yea your right i did it with my wife and it didnt work for her. When your pressung the home button i beleive your finger print is being read at that time and if its ok takes you home if not bye bye...
You right.. Thanks
Sent from my SM-N920T using XDA Free mobile app
sshafranko said:
Yea your right i did it with my wife and it didnt work for her. When your pressung the home button i beleive your finger print is being read at that time and if its ok takes you home if not bye bye...
Click to expand...
Click to collapse
You're right , thanks!!
It's actually a bit amusing the fingerprint scanner is fast and accurate enough to create this impression.
Had me scared for a second cause mine "did" this too! Thankfully the finger print scanner on this phone is decent finally. The Note 4 was garbage, and even the S6 Edge when I had it was too slow to want to use it. Now this is just great.
You're right, I believe I activated the camera via home button at least three times before going to home screen.
Sent from my SM-N920T using Tapatalk
Hi
I agreed with the lock screen issue.
It can be reproduce easily
1) Log into your homescreen as normal (dont matter if u r using pin, password or fingerprint)
2) Now, Pressed the "Power botton", your screen should shutoff/blackout as normal
3) Next, Pressed the "Power botton" ... your screen will come back ON ..at this moment just swipe the middle of your screen...
Wah-la...u login without giving any password/fingerprint autheticantion.
Note:
I have set it to "Lock Instantly with Power Key" and Lock Automatically to "Imeadiately"
Hopefully Samsung will fixed it sooner
Regards
Radiowc
SNG5 black TMO -64GB
radiowc said:
Hi
I agreed with the lock screen issue.
It can be reproduce easily
1) Log into your homescreen as normal (dont matter if u r using pin, password or fingerprint)
2) Now, Pressed the "Power botton", your screen should shutoff/blackout as normal
3) Next, Pressed the "Power botton" ... your screen will come back ON ..at this moment just swipe the middle of your screen...
Wah-la...u login without giving any password/fingerprint autheticantion.
Note:
I have set it to "Lock Instantly with Power Key" and Lock Automatically to "Imeadiately"
Hopefully Samsung will fixed it sooner
Regards
Radiowc
SNG5 black TMO -64GB
Click to expand...
Click to collapse
Just tested and doesn't work, re-check that your settings were saved because I tried 5 times and I can only get it to "work" when I turn off "lock instantly with power key".
AT&T 64GB
Kaboose666 said:
Just tested and doesn't work, re-check that your settings were saved because I tried 5 times and I can only get it to "work" when I turn off "lock instantly with power key".
AT&T 64GB
Click to expand...
Click to collapse
Thank you.. i will try that again... anyway i also open a case with Samsung. Maybe of affect small amount of users.
Cheers!
Kaboose666 said:
Just tested and doesn't work, re-check that your settings were saved because I tried 5 times and I can only get it to "work" when I turn off "lock instantly with power key".
AT&T 64GB
Click to expand...
Click to collapse
I went back to see if I had lock immediately selected and I didnt. So I changed it to immediately then proceeded to do the same test before and wasn't able to by pass the lock screen. Good catch and you're right.
Sent from my SM-N920T using Tapatalk
Just to update... mine fixed after doing soft reset or reset back to factory settings. Now it works as design.
Just have to spend some extra time to restore after the reset.

Fingerprint issues

How do you get the phone to recognize youe fingerprint? It is so annoying how it keep failing to recognize the fingerprint and asks to enter the code or pattern.
Cerberus123 said:
How do you get the phone to recognize youe fingerprint? It is so annoying how it always asks to enter the code or pattern.
Click to expand...
Click to collapse
Go to Settings -> Security -> Nexus Imprint. Follow on screen instructions to register your fingerprints (up to 5).
I believe there is a setting to not have to input a code every time, check to see if that is your issue. I only have to enter a pin after a reboot, then just the fingerprint unlocks the phone.
Raistlin1 said:
I believe there is a setting to not have to input a code every time, check to see if that is your issue. I only have to enter a pin after a reboot, then just the fingerprint unlocks the phone.
Click to expand...
Click to collapse
I didn't explain myself well I guess. It happens to not recognize the fingerprint and then asks for pattern/code. It is annoying.
First I would say to clean it well. Second i would suggest you reset the print and add extra sets too. Also what ROM, firmware ect are you running? I have had flawless experiences with my sensor across various ROMs. I do a full set scan for 4 fingers. My 2 pointers and my 2 middles as well as another scan set for odd positions. This ensures no matter what I'm holding or position my phone's in it will be easily unlocked.
mattdiehl83 said:
First I would say to clean it well. Second i would suggest you reset the print and add extra sets too. Also what ROM, firmware ect are you running? I have had flawless experiences with my sensor across various ROMs. I do a full set scan for 4 fingers. My 2 pointers and my 2 middles as well as another scan set for odd positions. This ensures no matter what I'm holding or position my phone's in it will be easily unlocked.
Click to expand...
Click to collapse
Running chroma 2/3 build with february firmware but I don't think that's the issue. I will try to register it again. Thanks.
Cerberus123 said:
How do you get the phone to recognize youe fingerprint? It is so annoying how it keep failing to recognize the fingerprint and asks to enter the code or pattern.
Click to expand...
Click to collapse
I've had the same problem since the last week after updating a resurrection remix version. I think it's been doing something weird, but it'll unlock normal in the car and stuff so I don't know. Seems like when I put my finger on the sensor it will wake the device and want me to enter a PIN. If I put an unregistered finger on the sensor it won't wake it it'll stay black screen. It might be something to do with when you are at home with smart unlock. Hmmm....
dontbeweakvato said:
I've had the same problem since the last week after updating a resurrection remix version. I think it's been doing something weird, but it'll unlock normal in the car and stuff so I don't know. Seems like when I put my finger on the sensor it will wake the device and want me to enter a PIN. If I put an unregistered finger on the sensor it won't wake it it'll stay black screen. It might be something to do with when you are at home with smart unlock. Hmmm....
Click to expand...
Click to collapse
I thought it could be the smart unlock and removed it but still same thing. Might have to go all stock and test it again. I had another nexus 6P before and that one you get unlocked really fast without any issues.
Edit: Found the issue. Double tap to lock ftom Nova was forcing the device to request pattern or pin.

Security Unlock Issue

I have a security issue, unless its me being silly.
I am fully stock unrooted.
I have never had any problem until today and I realised my phone unlocked without a pass code or finger print, I know this because I always wear rubber gloves and have to type the pin in to get into my phone, I do this day in day out and today after several unlocks it stopped asking for the pin.
I have uploaded a video showing what happens
It funny though because when I click the lock on the bottom of the unlock screen it prompts me for a pin or finger print, but if I don't touch the lock, just a simple swipe unlocks it.
Is there something I have pressed by accident which causes this?
https://youtu.be/67jmZpLGTMc
Kickasskev said:
I have a security issue, unless its me being silly.
I am fully stock unrooted.
I have never had any problem until today and I realised my phone unlocked without a pass code or finger print, I know this because I always wear rubber gloves and have to type the pin in to get into my phone, I do this day in day out and today after several unlocks it stopped asking for the pin.
I have uploaded a video showing what happens
It funny though because when I click the lock on the bottom of the unlock screen it prompts me for a pin or finger print, but if I don't touch the lock, just a simple swipe unlocks it.
Is there something I have pressed by accident which causes this?
https://youtu.be/67jmZpLGTMc
Click to expand...
Click to collapse
Check your smart lock settings. Is anything enabled?
adotkdotjh said:
Check your smart lock settings. Is anything enabled?
Click to expand...
Click to collapse
its not in use
Kickasskev said:
I have a security issue, unless its me being silly.
I am fully stock unrooted.
I have never had any problem until today and I realised my phone unlocked without a pass code or finger print, I know this because I always wear rubber gloves and have to type the pin in to get into my phone, I do this day in day out and today after several unlocks it stopped asking for the pin.
I have uploaded a video showing what happens
It funny though because when I click the lock on the bottom of the unlock screen it prompts me for a pin or finger print, but if I don't touch the lock, just a simple swipe unlocks it.
Is there something I have pressed by accident which causes this?
https://youtu.be/67jmZpLGTMc
Click to expand...
Click to collapse
I can't replicate the issue here - not sure what would cause this other than the smart bluetooth lock as suggested by the above poster.
Azarin said:
I can't replicate the issue here - not sure what would cause this other than the smart bluetooth lock as suggested by the above poster.
Click to expand...
Click to collapse
I haven't changed anything, I have cleaned the finger print sensor, no new apps installed.
Weird
Put it on charge and it's fixed it's self!
Sent from my Nexus 6P using Tapatalk

Bypassing Fingerprintsensor bug?

Hi everyone,
I notice that I can bypass my fingerprintsensor with tapping 3 times with the wrong finger on it and after the third time, the phone is unlocked.
I am on the last stock oxygenOS.
Does somebody else have this bug?
No.
No.
Yes I found that since the 1st day.
Now I tried twice with with a unregistered finger with the 3rd try another unregistered finger and it is unlocked!!!!
not all the time.
Sent from my ONEPLUS A5000 using Tapatalk
Doesn't happen to me. Have you got a pattern enabled?
After 3 failed finger print attempts the phone prompts for a pattern.
After testing, I was shocked to see that this worked on my phone...but after a little testing, it only unlocks on the third attempt when the phone has a smartlock device connected and doesn't require a PIN anyways.
If I turn Bluetooth off, the third wrong finger button press simply turns on the screen and asks for my PIN.
ArkAngel06 said:
After testing, I was shocked to see that this worked on my phone...but after a little testing, it only unlocks on the third attempt when the phone has a smartlock device connected and doesn't require a PIN anyways.
If I turn Bluetooth off, the third wrong finger button press simply turns on the screen and asks for my PIN.
Click to expand...
Click to collapse
Smartlock was the key here!
I turned trusted places "home" off and on the 3rd try asked for the pin code.
So basically if I'm in trusted places or connected to a trusted device after 3 consecutive failed fingerprints it will open my phone without pin code
MAJED.y said:
Smartlock was the key here!
I turned trusted places "home" off and on the 3rd try asked for the pin code.
So basically if I'm in trusted places or connected to a trusted device after 3 consecutive failed fingerprints it will open my phone without pin code
Click to expand...
Click to collapse
I think that's the point of smart Lock... ? So you don't have to unlock even with FP. Just swipe up and it should unlock...
That is interesting. Would only work around safety devices/places?

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