Database Develop

[Q] Proximity sensor issues on JB 98.72.22?

Hi all,
troubleshooting for a girl with a Bionic; replaced cracked glass/digitizer for her and updated to JB via the OTA update, but her proximity sensor is flaking out.
I've installed a few Prox. Sensor reporting apps to see what values it's putting out: it reads 3cm most of the time, and 100cm when swiping down the notification bar. (100cm is max range, which I assume is a placeholder for a no-report state in the phone, not sure what it has to do with the notification bar.)
Problematic behaviour is that the screen turns off almost instantly after placing a call, and won't come back on except by swiping down (on the blank screen) to pull down the notifications, which temporarily disables the sensor. (it lasts long enough to get ~1 keypress on the keypad, which is *not* a usable workaround even for checking voicemail.)
I'll take the phone apart again and make sure there's nothing in the way of the prox. sensor, as that seems the most likely cause... but any guesses or similar reports from anyone about possible bugs in the firmware update? Any proximity sensor calibration apps for this hardware I'm not seeing in the marketplace, or ROMs that expose that functionality? (I wasn't planning to root the phone, but she won't know the difference if I need to. Was hoping to avoid safestrap to simplify the boot procedure and not interfere with future OTA updates, but warranty is gone already so it's not a big deal if I need to install something new.)

Fingerprint sensor stops working

Had my S8 plus for about a month now. Every 2-3 days or so, the fingerprint sensor stops working just randomly. Will work perfectly, then just out of nowhere, doesn't respond to anything. Disabling fingerprint security and re-enabling doesn't fix it. Trying to go into applications- system apps- fingerprints, and trying to force close it won't work as it's grayed out. The only thing that works to get it working again is a restart. Not the end of the world I know, but having to restart it at the most inopportune times is kind of annoying. And paying this much for what amounts to the top of the line phone on the market right now, and having one the most important functions just stop working all the time is crap. And no I don't want to use the iris scanner, or pin, or pattern security. I want to use the fingerprint sensor.
Searches around the web indicate this is pretty common. Anyone else on the VZW S8 or plus having this issue? Anyone know if a fix is coming down the pipeline? I'm pretty sure this would be a software issue as it works 85% of the time and a simple restart gets it working again.

baune7 said:
Had my S8 plus for about a month now. Every 2-3 days or so, the fingerprint sensor stops working just randomly. Will work perfectly, then just out of nowhere, doesn't respond to anything. Disabling fingerprint security and re-enabling doesn't fix it. Trying to go into applications- system apps- fingerprints, and trying to force close it won't work as it's grayed out. The only thing that works to get it working again is a restart. Not the end of the world I know, but having to restart it at the most inopportune times is kind of annoying. And paying this much for what amounts to the top of the line phone on the market right now, and having one the most important functions just stop working all the time is crap. And no I don't want to use the iris scanner, or pin, or pattern security. I want to use the fingerprint sensor.
Searches around the web indicate this is pretty common. Anyone else on the VZW S8 or plus having this issue? Anyone know if a fix is coming down the pipeline? I'm pretty sure this would be a software issue as it works 85% of the time and a simple restart gets it working again.
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Some other threads on XDA have said that disabling fingerprint scanner gestures fixes it. I haven't ever used those and I have never had a problem with the sensor. It isn't as good as the sensor on my Moto Z Force Droid was, but it is pretty good.

Smithfolk4 said:
Some other threads on XDA have said that disabling fingerprint scanner gestures fixes it. I haven't ever used those and I have never had a problem with the sensor. It isn't as good as the sensor on my Moto Z Force Droid was, but it is pretty good.
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Click to collapse
Yeah, I disabled that last night. Waiting to see if that works or not. Just thought I would post in the Verizon specific forum to see if any other Verizon users are having this issue. Pretty sure it's a software issue, and am just curious about differences between the Verizon software and other carrier specific software.

Always had the gestures disabled and I have noticed this, but it always goes away with time for me. I thought it was just because I was sweaty at the gym, but it doesn't even know that I am attempting to use the scanner. Then, it happened outside the gym. Goes away in just a couple minutes, thought it was just me.

It seems that the fingerprint scanner is more reliable when the screen is off than it is when the lockscreen is on looking for iris scan.

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

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

Fingerprint Sensor Acting on its own

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?