Fingerprint Sensor Acting on its own - Samsung Galaxy Note 9 Guides, News, & Discussion

Hi,
I'm having a problem with my Galaxy Note 9. I just recently updated to the latest firmware which is N960FXXS5DTE2 Security
Patch 1 May 2020 and noticed that when my phone is locked, the fingerprint sensor is acting on its own. Then I get a message saying there have been 5 or more attempts to unlock the device. I tried a factory reset, still the same and also tried the sensor test which gave a PASS to all the tests.
Is it a software glitch? Anyone has this problem also?

IDK if this will help but try turning off Battery Optimization for the Samsung Biometric app. (Forgot exact app name, its something like that). I was having an issue with mine and doing this fixed it but can't guarantee it will work for you.

already disabled most of the optimizations but the fingerprint scanner acts on its own constantly. You have another suggestion?

Related

Reduced fingerprint performance on 6.0.1 CPF1?

Not sure if this is an issue that only I suffer, but after the update to CPF1, my fingerprint sensor performance has become unusable.
Adding a fingerprint that normally takes less than 20 seconds now takes at least a minute, with a prompt to "Lift your finger off the home key" appearing and injecting a delay of several seconds before one is actually allowed to scan another part of your fingerprint.
Fingerprint unlock has also gone off a hill, fingerprints are now unrecognized unless the orientation is the same as the orientation when the scan occurred, and a multi-second delay is now present when a mis-scan occurs.
I noticed in the OTA update inf file, there was a line
Code:
apply_patch("/system/priv-app/FingerprintService2/oat/arm64/FingerprintService2.odex", "-", 2de08396342e1d053f9875c7e19b945385db7857, 418560, d5875cdae656c286edd962e0220ecd31f8b692bb, package_extract_file("patch/system/privapp/FingerprintService2/oat/arm64/FingerprintService2.odex.p"));
indicating that the fingerprint service had been updated, and I was wondering if anybody else is suffering from the same issues.
My fingerprint scanner is working perfectly fine, nice and fast and still haven't gotten an error.
Hello !
I'm not alone !! I thought my fingerprint sensor was broken...
I downgraded on 3DPDP (France firmware, before the newest from June 22th) and do a wipe data to see if it works again.
I have a S6 edge but Samsung has updated the service on all of their phones obviously

Note8 Sensors error - Any of you faced with?

I have Note8. It has a very strange sensors error, as below:
- All sensors, from proximity sensor, light sensor, to GPS, iris scanner, and all the other sensors do not work at all.
- In the app like Phone INFO Samsung, CPU-Z or AIDA64, in the Sensors section, all sensors do not work.
- The Auto Brightness function does not work (due to the light sensor), the brightness of the AOD screen is also not adjustable.
- When making a phone call and move the phone close to the ear, the screen does not turn off due to proximity sensor.
- Auto Rotation function is not working (due to rotation sensor).
- Google Maps shows inaccurate location. Other apps that rely on GPS (such as the speedometer app) are completely not working.
- The iris scanner function does not work either.
It was about two weeks ago. I've Wiped the cache, restart the phone but does not make sense.
Yesterday it suddenly returned to normal, I don't know why.
But today - while I'm typing this post - all sensors suddenly do not work again.
Any idea about the error and how to fix it?
Thank you guys
Best advice I can think of is to factory reset and see if that alleviates the problem.
If you did not do anything firmware-related, or you did not drop or submeged your device, the best you can do is to make a warranty claim, pure and simple, if you have no way to make such claim, well, next time you should consider getting a device from an official source
I've read other users have had same problem. Ones I read said it was motherboard issue had to have sammy replace it.
Thank you guys
There is also built-in sensor test. Open dialer and dial *#0*#
I noticed a problem when I was playing Asphalt (racing game on me Note 8). I am unable to use the Tilt controls to move the scar.
Testing out the Sensors using *#0*# at the dialer revealed that all the SENSORS was faulty.
I reset the whole phone just now. The issue is still there with the sensor. As expected Auto rotation doesn't work.
Running the latest version 8.0.
I recently changed my motherboard (under warranty) 3 months back cos something was faulty. Seems it may be another motherboard issue.
Anyone else in this thread solved the issue?
Hey everyone I'm facing the same problem. All sensors stoped working but they were working before on 7.1.1 and i updated my device to oreo and realized all sensors stoped
Then i got another updated for about 900mb i thought maybe this update will fix them and also that update said tha after updating the user cannot downgrade to nougat but after updating the problem still exsist. Please if anyone can help i also try to flash same oreo firmware with odin but doesn't fixed the sensors

Note 8 sensors not working

Hello there!
Well just like the title says, I have a Note 8, wich is almost like brand new, not even one drop to the ground, not a single scratch, and also no funny apps, just the basics for everyday.
Thing is out of nowhere, several sensors stopped working, no matter what (factory reset, hard reset, wipe cache, safe mode).
Fingerprint scanner: WORKS
Proximity sensor: DOESNT (calls never turn screen off)
Iris scanner: DOESNT
Auto bright: DOESNT
Auto rotate: DOESNT
Heart rate: turns on, but doesnt register your pulse
I've read a lot of people having this issue, some say it was right after a security patch OTA, other it's a faulty batch of motherboards, yet no definitive answer.
Do anyone knows if this can be fixed? It can't be a hardware problem since its like brand new, unless the update somehow fried something inside...
Hope I was clear enough about this, any ideas you have could help!
Thanks!
Did you perform HW test, USSD code *#0*# in phone dialer?
May be useful to report your phone model (Exynos - N950F or Snapdragon-N950U or other)
OnnoJ said:
Did you perform HW test, USSD code *#0*# in phone dialer?
May be useful to report your phone model (Exynos - N950F or Snapdragon-N950U or other)
Click to expand...
Click to collapse
Yes I did. Everything is stuck at 0.
Oddly, today I tried the heart monitor again, and it registered almost 50%, and then says finger is not where it should be, not reading anymore...
Gand4lf23 said:
Hello there!
Well just like the title says, I have a Note 8, wich is almost like brand new, not even one drop to the ground, not a single scratch, and also no funny apps, just the basics for everyday.
Thing is out of nowhere, several sensors stopped working, no matter what (factory reset, hard reset, wipe cache, safe mode).
Fingerprint scanner: WORKS
Proximity sensor: DOESNT (calls never turn screen off)
Iris scanner: DOESNT
Auto bright: DOESNT
Auto rotate: DOESNT
Heart rate: turns on, but doesnt register your pulse
I've read a lot of people having this issue, some say it was right after a security patch OTA, other it's a faulty batch of motherboards, yet no definitive answer.
Do anyone knows if this can be fixed? It can't be a hardware problem since its like brand new, unless the update somehow fried something inside...
Hope I was clear enough about this, any ideas you have could help!
Thanks!
Click to expand...
Click to collapse
I have the exact same issue with my note 8, this all begin after installing the Security Patch April2020. Tried all possible reset and factory restore ... nil fix.
Does anyone have any update on this, my phone software vrs android 9 with One Ul version 1.0.
Note 8 sensor not working
Same thing happened to me after July security patch in my note 8.
I mail samsung
I chat with them
I go to customer care
They don't care.
bhumishh said:
Note 8 sensor not working
Same thing happened to me after July security patch in my note 8.
I mail samsung
I chat with them
I go to customer care
They don't care.
Click to expand...
Click to collapse
I replaced the U400 ic .. and everything was normal.
Reeds629 said:
I replaced the U400 ic .. and everything was normal.
Click to expand...
Click to collapse
Hi! U400 what this? what needs to be done?
snik99 said:
Hi! U400 what this? what needs to be done?
Click to expand...
Click to collapse
its an ic on the motherbord.

SM-N950F Sensor Issues

My Samsung Galaxy Note8 (SM-N950F) has recently started playing up.
I first discovered that the iris scanner was "Not responding, then I saw that the Auto-brightness also was not working, as well as the manual brightness slider. I tested the rest of the sensors by dialing *#0*# into the dialer, and found that the Accelerometer, Ambient Light Sensor, Gyroscope, Iris scanner, and the Barometer are not getting any data. Everything was working as expected.
In an attempt to fix these issues I first rebooted the device, when that didn't work I cleared the cache partition, that didn't work either so I did a factory reset. That also did not solve the problem, so I flashed some older firmware (July 25 2018) using Odin. That also did not work.
I checked the water damage indicator in the SIM tray slot, however it has not been activated.
Could this be a physical problem? Or is it Software?
User540705538 said:
My Samsung Galaxy Note8 (SM-N950F) has recently started playing up.
I first discovered that the iris scanner was "Not responding, then I saw that the Auto-brightness also was not working, as well as the manual brightness slider. I tested the rest of the sensors by dialing *#0*# into the dialer, and found that the Accelerometer, Ambient Light Sensor, Gyroscope, Iris scanner, and the Barometer are not getting any data. Everything was working as expected.
In an attempt to fix these issues I first rebooted the device, when that didn't work I cleared the cache partition, that didn't work either so I did a factory reset. That also did not solve the problem, so I flashed some older firmware (July 25 2018) using Odin. That also did not work.
I checked the water damage indicator in the SIM tray slot, however it has not been activated.
Could this be a physical problem? Or is it Software?
Click to expand...
Click to collapse
Looks like physical damage.try sending to service centre
Sent from my SM-N950F using Tapatalk

Unreliable Fingerprint sensor and VoLTE issues on Official Android Pie upgrade

Wonder why is this not yet raised while all devices I have tested has the same critical issues of unreliable Fingerprint sensor and VoLTE as below:
1. Fingerprint sensor randomly stops responding for several seconds when an app or phone needs to authenticate. Sensor itself is working as other gesture controls work fine. However the authentication API sleeps for several seconds to a minute or till the device is put on sleep and woken up
2. Dual VoLTE and Dual 4G cripples while giving false ringing on Airtel and loosing VoLTE symbol and connectivity on Jio. While other phones randomly loose signals, V40 does this false ringing on Airtel while there is no incoming or outgoing call connectivity without giving any error
Both these issues affect all 3 devices tested and factory reset, etc. Doesn't help either. Phone was never rooted or custom firmware installed (as I don't find any useful here)
Appreciate if someone can suggest a possible fix as I love the phone and except for this and random lockup due to choked RAM (0.5GB or less physical RAM available most of the times while also consuming all the 2.8GB swap file)
Both these issues are observed on the latest Android 9 upgrade for India (released on August 1st). I can confirm that Fingerprint sensor never caused any issues before this upgrade on any device. Have tested on several devices and have replicated these issues on 3 of them simultaneously
I'm having the same issue with my fingerprint sensor. It's annoying, to say the least, especially when I'm trying to unlock my phone in a hurry. I have my device for 3 months now, and it only started happening two weeks ago. I haven't received any updates since December, so it can't be a new update that caused this.
I've also done a hardware test, and it shows the fingerprint sensor is working as it should. [emoji2370]
Sent from my LM-V405 using Tapatalk
Thing is android will have worst performance and than what operating system it came with when released other than software issues. This is the reason why people will try and want to downgrade their operating system back to how it came with.
I am also facing Volte issue with airtel, I don't find any solution yet, So i have disabled Volte for my airtel connection. I have noticed this volte issue is only happening from last year October, Before it used to work..
I have also noticed fingerprint sensor issue and it is very random.
Ive had the finger print reader issue, but noticed it had to do with my cover I use.I have a complete shell type case,and over time it collects residue around the edges of the case around the sensor.Removing the phone from the case,and the sensor works fine,sometimes I may have to clean the sensor with a damp cloth.
With my slim fit case,I never have the issue.
I've noticed something a bit odd regarding the fingerprint sensor. After I make or receive a WhatsApp call, my fingerprint sensor usually stops working for a bit. I haven't really had issues for the past week or two, until I received a WhatsApp call. Immediately after the call, my fingerprint sensor didn't work, so I unlocked my device with face unlock. After that, it worked perfectly fine again. And a few weeks ago, I made quite a few calls on WhatsApp, which is when I had constant issues with my fingerprint sensor. I even reset my fingerprint authorization app, and cleared my fingerprints from the device, to help sort it out.
I know it might be a long shot, but is it possible that there's a bug that causes this, either from WhatsApp or on the LG firmware itself?
If anyone has more knowledge about this, your input would be highly appreciated!
Sent from my LM-V405 using Tapatalk

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