Camera Auto Focus problem / bug GALAXY S6 - Galaxy S6 Q&A, Help & Troubleshooting

Hi Guys,
Just got my phone replaced because the screen was sometimes unresponsive when layed flat on a surface.
Now I got a problem with the rear facing camera. When I open the camera app the auto focus doesn't always work. As result I get very blurry photo's
I made a short video to show you guys the problem:
Can you guys tell me if this could be a hardware or software problem. I performed a hard reset and reboot but the problem still occurs from time to time.
Ps. I didnt drop my phone and I removed the plastic of the camera lens and led flash, so that cant be the problem.

Since the problem cant be solved with a hard reset, I guess it's a hardware problem. So I contacted my carrier and I will get a new phone. Hopefully this time a phone without problems/bugs.
I will keep you guys updated.

I have that problem too, shaking the phone unlock the focus. It seems to be hardware problem, using the manual focus in pro mode change nothing, only way to fix it for me is wait like 30 to 60s or shake the phone.
I try to get a replacement but obviously, it works perfectly the two times they check :silly:

I had the same problem in the store like you. When I wanted to show the problem to a shop assistant, the camera worked perfectly :silly:
But (thankfully) they believed me and one of these days I will get a replacement because they didnt had any in stock to give me right away.
Maybe you can show them the video on YouTube and tell them that there are more people with the same problem?

I think I will keep it like this for now, and I will ask for a replacement just before the warranty end, so I will have a new phone ^^ I'm used to it now, if it bug, I just shake it and all is fine.

Yeah that would be great. Only I'm afraid that here in the Netherlands the phone will be send to get repaired instead of getting replaced. Only in the first two months i can get it replaced, at least that is what the T-mobile shop assistant said to me.

One of my friend has the same issue. She figured out that she "just" needs to hit the phone on its front top left corner (not hard) and it suddenly works.

yeah thnx, that works most of the time. Still I would bring it back to get it repaired or get a replacement. Yesterday for example, I wanted to take a picture of a fast bike passing through but I ended up with a blurry picture. That shouldnt had happened and I dont want it to happen again.
Still thanks for the tip.

i have the same problem.. the camera take too long to focus or does not focus at all, i need to shake the phone.. i called tmobile and they will give me a replacement.

root the phone then add this to build.prop to fix it
ro.ril.sensor.sleep.control=0

aloric said:
root the phone then add this to build.prop to fix it
ro.ril.sensor.sleep.control=0
Click to expand...
Click to collapse
Where do I add that line in the build prop?

I have almost the same problem. Only facing this issue on third party camera apps like Snapchat or Facebook messenger, besides that it works fine. No problems on stock (yet).

Similar Issue
I went hiking one day back at the end of May, and inadvertently left my S6 in the car, which of course, got very hot during the day. After getting back to my car almost 9 hours later, my phone was almost too hot to even touch. I promptly removed the slim case that was on it, and held it up to the A/C (not ice cold, was trying to avoid condensation).
Ever since then, when going into 3rd party apps (most notably Snapchat, and sometimes even the stock camera app) the auto-focus motor seems to get stuck.
The easiest fix for me so far seems to be shaking my phone up and down rapidly 1-2 times. Upon doing this, I can hear a faint *click* and the focus works as normal.
This is very obnoxious as I've missed many shots due to having to do this (and sometimes it doesn't always work). Hard reset has done nothing, so I'm assuming maybe something in the camera got damaged due to excessive heat.
***Edit: After talking to my insurance provider (Squaretrade), they told me that this was still under manufacturer warranty, and to go through my carrier. After taking the phone to Verizon, it was discovered that the water-damage indicator had the slightest bit of red/pink on it, deeming it "water damaged". I later checked this myself at home and there definitely was some red on the strip.
Contacted Squaretrade again, informing them of the new situation, and they advised they would send a refund for the phone (since it was from eBay).
Hopefully the new phone will not have this issue!

Hi guys ..
I was suffering from the same problem .
The problem is the focus of the camera in galaxy s6 just like the Video, .
The solution is:
delete this line : ro.ril.sensor.sleep.control = 0
from ( build.prop )
you can find it in : system/build.prop
Using this program with root access : (Root Browser)
*i can not insert the link because i am a new user here .
after you click on build.prop chose (RB Text Editor)
note : (i am arabic man so my english is not good )

Anyone managed to fix this issue with the method above?

Yup..This is still common.. How does one fix without root?

Solution not working for me I did non fount the line ro.ril.sensor.sleep.control = 0 in my build.prop.. i tried to add the line but nothing changed problem still remains

I had the same camera issue. I took my phone to Samsung and they replaced the camera module.
Now it works perfectly.
Saludos ?

I can't go to Samsung, i have knox counter altered..no warranty for me

yourlifeupdated said:
I can't go to Samsung, i have knox counter altered..no warranty for me
Click to expand...
Click to collapse
So what? I have that to, went to an official Samsung Store and they (tried) to fix it
Having the problem myself btw, but if i aim the sensor to the ground en go back up its fixed, not so big problem. Only when selling the phone i want it fixed so its worth more...

Related

[Q] Screen flickering/shifting/cycling up

For 6 months, my Nexus 5 have been the best thing that happened to my life. But after the 4.4.3 update around Jun13, this display issue appears. Display keeps shifting upward in a continuous manner. For example, the keyboard is now in the middle, and the top part is below, it keeps flickering and moving. So I thought it may be a software bug since it coincided with the update (and no, I did not drop it). I tried all (factory reset, turn auto settings off, Developer options settings) to no avail. I contacted Google support and after a few emails, they told me to contact Japan support team. I don't know anyone from Japan. (Actually I do, but when he called them, the Google person couldn't speak English and my friend can't speak sufficient Japanese). (Note: A friend of another friend bought this phone from Google Store Japan)
So I thought, wth, let's open the back, maybe there're loose connections, like the battery or something. But now the adhesive is tampered with, a small dent in the case (due to the very strong adhesive) and the back does not pop completely back. One corner is a bit loose, so there's no fooling them that I have opened it.
I updated to 4.4.4 and new issue, the display is gone, just backlight. I managed to fix this eventually. Now I'm back to 4.4.2, and the display is still shifting. During bootup, Google logo is stable, but the next animation is shifting. Bootloader is stable, but sometimes it moves up a grid after I press a button. So I assume that the display moves when the system processes something.
So my conclusion now is that this is probably hardware/GPU issue. Or is it? My warranty is as good as void already since I can't communicate with Japanese, and since I opened the back, it really is void already. I have 2 immediate plans of attack: 1) flash a custom rom, if software issue; 2) buy a triwing screwdriver to check the back, if loose hardware.
Any thoughts?
You have answered your questions already m8.. If I were you, I would find someone who can speak Japanese and tell them to contact Google support and act as a interpreter.. I'm sure you will find someone in your workplace.
Since you've opened up the back and damaged the device to a point where it doesn't pop back, the warranty is gone most probably. But I would still contact Google first and then go-ahead with tampering the hardware.
- Sent from an IceCold Hammerhead!
tsuwariwarirap said:
For 6 months, my Nexus 5 have been the best thing that happened to my life. But after the 4.4.3 update around Jun13, this display issue appears. Display keeps shifting upward in a continuous manner. For example, the keyboard is now in the middle, and the top part is below, it keeps flickering and moving. So I thought it may be a software bug since it coincided with the update (and no, I did not drop it). I tried all (factory reset, turn auto settings off, Developer options settings) to no avail. I contacted Google support and after a few emails, they told me to contact Japan support team. I don't know anyone from Japan. (Actually I do, but when he called them, the Google person couldn't speak English and my friend can't speak sufficient Japanese). (Note: A friend of another friend bought this phone from Google Store Japan)
So I thought, wth, let's open the back, maybe there're loose connections, like the battery or something. But now the adhesive is tampered with, a small dent in the case (due to the very strong adhesive) and the back does not pop completely back. One corner is a bit loose, so there's no fooling them that I have opened it.
I updated to 4.4.4 and new issue, the display is gone, just backlight. I managed to fix this eventually. Now I'm back to 4.4.2, and the display is still shifting. During bootup, Google logo is stable, but the next animation is shifting. Bootloader is stable, but sometimes it moves up a grid after I press a button. So I assume that the display moves when the system processes something.
So my conclusion now is that this is probably hardware/GPU issue. Or is it? My warranty is as good as void already since I can't communicate with Japanese, and since I opened the back, it really is void already. I have 2 immediate plans of attack: 1) flash a custom rom, if software issue; 2) buy a triwing screwdriver to check the back, if loose hardware.
Any thoughts?
Click to expand...
Click to collapse
It is incredible, i have exactly the same problem and i did the same as tsuwariwarirap did. So if it is the same issue could be a kind of software problem? Or maybe all the nexus5 hardware will have issues with 4.4.3 or 4.4.4 ?
shevaperu said:
It is incredible, i have exactly the same problem and i did the same as tsuwariwarirap did. So if it is the same issue could be a kind of software problem? Or maybe all the nexus5 hardware will have issues with 4.4.3 or 4.4.4 ?
Click to expand...
Click to collapse
It's a hardware issue. A software update can't cause the flex cable or the display to go bad like that. If you have flashed back to fully stock and still have these issues, your only option is to replace the damaged parts.
Hi, do you mean this kind of issue
How did you solve this?!

Screen Flickering

I've read a few threads on the screen Flickering and there doesn't seem to be any resolution .
I'm on my 3rd tablet now (thanks best buy accident damage warranty!) And this one is flickering worse lately than ever. I updated to the latest firmware, yesterday only to boot up to horrible bouts of flickering during the setup screens.
The odd thing is, there seem to be no consistency to it. Some days it's so had I can't even use the thing, other days it doesn't happen at all. I use the tablet every day for notes or PDF viewing. I've used it with no magnetic cover (totally naked) and with the cover.. doesn't seem to change the occurrences.
I've turned overlays on/off force gpu render on/off.. nothing seems to fix it. Sometimes changing the overlay will reduce the flickering other times it doesn't affect it at all.
I hate to say it, but if I can't resolve it, I'm going to be forced to move to the surface 3.
I'm an electrical engineer and I've done as much trouble shooting as I can think to do.. but I've come up empty handed.
Anyone else have these problems? Has anyone found a definitive fix?
I sent mine back 3 times. The first was a reset. Thanks for wasting my time. The second was a motherboard and that didn’t do it. The third time they did a motherboard, digitizer, and usb port. It's finally stable and back to normal. After 5 trips back, the BB warranty triggers a new unit. Check if it triggers a refund.
I get it occasionally, so far I'm able to resolve it by booting into custom recovery (TWRP) and clearing dalvic to allow all apps to rebuild. Sometimes this resolves it for a few days, sometimes a couple of weeks. Its a repeatable "fix" that makes me question if the issue is related to memory or trim or something like that. Kind of reminds me of how with the first generation nexus 7s one would see slow downs after a while and filing storage with fake data then deleting it would improve performance for a while.
I'm definitely not a tender user of the device. I go back and forth between multiple ROM's and kernels on a daily basis testing what is testable, and unfortunately also what is not. Anyway, even though mine was bought as refurbished on eBay, I have never had any issues like the ones you describe. More specifically, I have never had any issues what-so-ever, that was not created due to my own ignorance. To me the device seems indestructible.
Besides, I would hate to be in the place of my device, or I would definitely have turned schizophrenic. Should I feel bad about pushing it through all this?
Because we're trying to figure out if it's related to a specific device type, which one do you have? P900, 905, 907A or another?
ShadowLea said:
Because we're trying to figure out if it's related to a specific device type, which one do you have? P900, 905, 907A or another?
Click to expand...
Click to collapse
P900 wifi. Us version bought at best buy.
Today the tablet has been rock solid, I have literally done nothing between when it was flickering like mad and now.
I wonder if it might be related to some kid of data transfer. either over wifi, or when data is written or read from storage or SD card. I've take then SD card out to eliminate that as the problem.
Mine was P900 from BB
Issue lies with the screen.
This happened with me I sent it back to Samsung, 3 times. They seem to have finally got it right. They replaced the battery and then the display screen. Now it appears to be working I will let you know after a month if it is still good. They also told me that they will not replace the device even though I bought it and the issue was right from the start. Not even 6 months old. When working the device is excellent.
Ah, so now we know for sure the battery is replaceable. That's good news. Maybe someday our batteries will no longer hold a charge and we can replace it. Now for a good video on tear down and what tools to use to do that and where to get a replacement battery. I know it's early for most of us but someday......we will have to replace that battery. I'm one of those that keep my toys (computers/laptops/tablets/phones,) for many years.
Mine is running like new since last service. Getting the BB Geek Squad warranty has paid for itself already. I get 2 years on anything over $500.
Mine is a p900. I purchased from samsung website. Mine has been doing it fresh out of box. So bummed.
Ive had my 12.2 since march and it recently started flickering. It seems to tuen of the screen for a millisecond especially when lots of refreshes happen. Like scrolling a pdf. A few days back it was bad. Now it has gotten better and I havent noticed anything.
{Diemex} said:
Ive had my 12.2 since march and it recently started flickering. It seems to tuen of the screen for a millisecond especially when lots of refreshes happen. Like scrolling a pdf. A few days back it was bad. Now it has gotten better and I havent noticed anything.
Click to expand...
Click to collapse
My P900 has just begun flickering exactly as you describe. So I should just be patient and hope it goes away by itself?
I'm flickering again. Turning the screen brighter is what triggers it for me. Returning to stock just to get it back and have it flicker again to hit the magic 5 returns may be what I have to do.
https://youtu.be/CvxbVft69Kg
I just followed this guide. Its been a week now, not had any flickering since I did it.
Manya3084 said:
I just followed this guide. Its been a week now, not had any flickering since I did it.
Click to expand...
Click to collapse
Lifting the motherboard only temporary close the gaps of cracked battery connector. The permanent fix need to do: re solder the battery connector.
Look closely under magnified glass or microscope , you'll see the cracked solders. You can test by pushing the connector slightly, a bad one will move easily or lift off from its solder joints.
This video was removed from the poster after I pointed out his guessing solution. Flickering screen has nothing to do with LCD connector on the motherboard.
Lifting mother board actually you're applying pressure on the battery connector from rear cover.
I have had my P900 sent to Samsung service twice without having the screen flicker fixed. I thought this was a known problem and that Samsung themselves should be aware of it? Maybe I should supply some XDA links next time...
Skickat från min SM-P900 via Tapatalk
bluebirch said:
I have had my P900 sent to Samsung service twice without having the screen flicker fixed. I thought this was a known problem and that Samsung themselves should be aware of it? Maybe I should supply some XDA links next time...
Skickat från min SM-P900 via Tapatalk
Click to expand...
Click to collapse
Depend on where you send for service, they know how to fix it now. Service Centers actually are contractors provide services for Samsung and others, the fact that most people don't know.
http://forum.xda-developers.com/showpost.php?p=59573206&postcount=100
It Works. Battery connector replaced. Smoooooth
After 2 visits to Samsung , my unit finally works fine.
Motherboard and LCD were changed first time. But issue persisted.
Second time, battery connector was replaced. Since then it has worked very very smoothly.
Beut said:
Depend on where you send for service, they know how to fix it now. Service Centers actually are contractors provide services for Samsung and others, the fact that most people don't know.
http://forum.xda-developers.com/showpost.php?p=59573206&postcount=100
It Works. Battery connector replaced. Smoooooth
After 2 visits to Samsung , my unit finally works fine.
Motherboard and LCD were changed first time. But issue persisted.
Second time, battery connector was replaced. Since then it has worked very very smoothly.
Click to expand...
Click to collapse
Thanks, missed that other thread. Next time, I'll send them an en explicit request to replace the battery comnector, and refer to those two threads.
Stefan
Tapatalked on some kind of Samsung tablet

[Q] Warning: Camera Failed. Can anyone fix it?

I am having a huge problem with the main camera on my Sprint Samsung S5. Every time I try to use it, I get the notification "Warning: Camera failed." It was purchased on the release date (I think 4/11/2014). It was a known issue for Verizon and I think Sprint phones for this to happen but mine is having this problem 10 months later. I have cleared the cache, cleared data, wiped cache and dalvik, done a factory reset, installed MOAR 6.0, CM12, MOAR 2.2, removed SD card after having flashed a new rom (so no other apps could prevent the main camera from working), disabled the Samsung camera app and tried using Google Camera, and nothing has worked. Today I went to a cell phone repair store and the technician said he tried three main camera sensors and two front facing camera sensors (just to allegedly rule out a hardware issue) and could not get any of them to work. The front facing camera works in Google Hangouts but nothing seems to get the back camera to work. I don't even recall dropping my phone and there's not a scratch on it but one day the main camera decided not to work. It wasn't even after flashing a new rom. Does anyone have any ideas?
Thanks,
Richard
Samsung warranty
We received a service bulletin a while back about this specific issue and its a hardware problem . So your best bet is sending in to Samsung or depending on your carrier you can call carrier and they will swap it out for you.
Thanks for your reply Dhulqarnain. I have rooted the phone and tripped Knox so I can't send it back to Samsung and Sprint is requiring me to sign up for their protection plan (I think through Assurion) to take care of this even though it seems like it's a known issue. Do you have any other suggestions?
Thanks,
Richard
Same problem...inexpensive solution
I've had my sprint s5 for nearly 2 years now, and I recently started having the same exact issue. After extensive research I'm afraid that I must confirm it is a hardware issue. I'm in the same boat as far as knox, my friend...and that leaves repair as our only option. The good news is that it supposedly isn't too difficult to replace, it actually connects like a laptop keyboard, or an ipod hard drive connects (a ribbon type connector). It probably will be a ***** to get it connected, but the even better news is that eBay has our s5 camera from a few dozen sellers ranging from $6 to $15. :good:
Thanks Gmoney1234. I took the phone to a cell repair shop and they tried six different main camera sensors and two different front facing camera sensors and could not get it to work. So that means there's something else going on with it.

Galaxy S6 Camera Randomly Makes Loud Buzzing Sounds?

Hi all,
I wasn't able to find any threads related to this in the S6 forums but I wanted to see if anyone else has this. When I open my camera app, sometimes the camera takes 1-2 seconds to initially focus and during that time it makes a loud buzzing sound. It sounds like a focus motor or something in the camera and the camera output on screen flutters while it focuses. Once it focuses, everything is normal and it doesn't make any more noise to refocus. This also doesn't happen every time I open the camera app, seems mostly random. Has anyone else experienced this? I am already on my 2nd S6 since the first was defective for different reasons and I'm starting to get very disappointed with Samsung quality control.
I have the dame problem.
I don't know if this is normal.
I don't think so
Waiting for some explanations
Sent from my SM-G920F using XDA Free mobile app
going to bumps this too because after having the phone for a month this problem has just started to show its face.
I've first noticed a small buzzing just after a boot for 3/4 times and than I had a long one opening the camera. After that it's gone...
I have it also! Started a couple of days ago. I have dropped my phone a couple of times. What about you?
Had this happen for the first time today also. Had hdr off, switched back on and it went away. Coincidence? Phone never dropped.
rakh1 said:
Had this happen for the first time today also. Had hdr off, switched back on and it went away. Coincidence? Phone never dropped.
Click to expand...
Click to collapse
Relax...is the mechanism of optical stabilization.
Mine is doing that too...
https://www.youtube.com/watch?v=W1svaTxBY6o&feature=youtu.be
I have the same problem. It is also sometimes accompanied by the picture wiggling in wave patterns.
flu13 said:
I have the same problem. It is also sometimes accompanied by the picture wiggling in wave patterns.
Click to expand...
Click to collapse
Yup...exactly.
poweroutlet said:
Hi all,
I wasn't able to find any threads related to this in the S6 forums but I wanted to see if anyone else has this. When I open my camera app, sometimes the camera takes 1-2 seconds to initially focus and during that time it makes a loud buzzing sound. It sounds like a focus motor or something in the camera and the camera output on screen flutters while it focuses. Once it focuses, everything is normal and it doesn't make any more noise to refocus. This also doesn't happen every time I open the camera app, seems mostly random. Has anyone else experienced this? I am already on my 2nd S6 since the first was defective for different reasons and I'm starting to get very disappointed with Samsung quality control.
Click to expand...
Click to collapse
Try to clean up your camera lens.
Did your device take some damage in the past?
Did you take it underwater? (The S6 isn't waterproof anymore...)
---------- Post added at 18:59 ---------- Previous post was at 18:58 ----------
sdfsdfsfs said:
Relax...is the mechanism of optical stabilization.
Click to expand...
Click to collapse
But it's not that loud.
Otherways, you can't record videos properly, because the microphone records those sounds.
AfroCreame said:
Mine is doing that too...
https://www.youtube.com/watch?v=W1svaTxBY6o&feature=youtu.be
Click to expand...
Click to collapse
Same problem here since last week.[emoji26]
I tried hard reset and another camera app (Google photo), nothing work.
I think it's a hardware problem, it occurs after shaking the phone and launching the camera.
I feel that the OIS makes more noise when app is off.
flu13 said:
I have the same problem. It is also sometimes accompanied by the picture wiggling in wave patterns.
Click to expand...
Click to collapse
This started happening with my S6 today. I think it's the OIS that poops out. I can make this happen with a light tap with my finger on the backside of the phone with the camera open and using the rear camera. And this happens with all camera apps: Samsung's bundled camera, Snap Camera and Camera FV-5.
Update: ..and just as sudden this started happening, it went away again. I hope it's a bug - with a fix in 5.1.1.
Update 2: No, it didn't go away. It comes and goes. I may need to take the phone to the service centre.
Mine has gotten worse. Almost every time I open the camera now, I have the buzzing.
Just checking in to say that mine started doing this, too, about four weeks after getting it. It does it randomly when I open Snapchat, too.
I am having this problem too on the Sprint version sometimes it is pretty loud. I'm planning on taking to service center I think.
I also get the waves before it focuses. I read on another forum that someone said they went to a Samsung service center and Samsung replaced their OIS sensor so I'm guessing this may not be something that is simply part of the design.
*Update #1*
I just got off the phone with Samsung customer service. The representative actually heard the buzzing from my phone over the phone while I was talking to her. Since the phone is still under factory warranty they are emailing me a shipping label to send the phone back for repair.
I also have Asurion insurance through Sprint but do not want a refurb for a phone that is less than a month old with no damage caused by me.
Unfortunately the turn around time from Samsung is about a 5 business days and that was after they told me 9-11 days in which I said I couldn't be without a phone that long.
So, I plan on going to Sprint to see if they will swap out my phone for a brand new one. I think if it is a manufacturer defect they will replace the phone without going through insurance for a refurb but I am not positive. It they won't swap it out for a new one I will go through Samsung.
Sent from my SM-G920P using
Tapatalk
what about focus struggle and a buzzing , it's a hard ware issue also ? or what ?
sonasteel said:
what about focus struggle and a buzzing , it's a hard ware issue also ? or what ?
Click to expand...
Click to collapse
Yes it appears to be hardware related.
Sent from my SM-G920P using Tapatalk
any one try to set another mega pixel like 12 , 8.9 ,8 ... etc ., and the focus struggle and buzzing still there ?
sona4steel said:
any one try to set another mega pixel like 12 , 8.9 ,8 ... etc ., and the focus struggle and buzzing still there ?
Click to expand...
Click to collapse
I tried and initially it doesn't seem to happen when the mega pixels are lowered but I haven't tested extensively.
I went to Sprint today and the technician concluded that he was ordering me another phone so definitely seems hardware related.
Sent from my SM-G920P using Tapatalk

Fingerprint Sensor not working

My fingerprint sensor will just stop working and I need to reboot it in order to make it work again. It doesn't detect my finger at all , it's like its dead. I have the Verizon s8+, pre ordered it and got it on 4/20. I don't suffer from the dqa issue but i have another s8 plus, also pre ordered that does suffer from the issue. Anyone know of a fix or know how we can bring this to light in order to get it fixed
Edit: I believe the fix is to go into lock screen and security, after which go to secure lock settings and select the lock automatically option, and set it to immediately. I tested it when my fingerprint sensor wasn't working, and it fixed it for me
Edit #2: That did not fix it forever , issue came back within 30 minutes, from my testing it appears that fidgeting with the following (1. Screen Timeout 2. The Automatic lock timer 3. Lock instantly with power key) causes the issue to disappear or appear. I have contacted Samsung about it and they suggested a factory reset, not giving 2 ****s about the issue, they couldn't even tell me if they were working on a fix.
Edit #3: wow, didn't expect this page to become so popular as I didn't think this was such a big issue, my final solution was turning off fingerprint gestures, haven't experienced the issue after that, I've tried to factory reset the phone multiple times.
P. S. I have been able to achieve better speeds with the Iris scanner, a key trick to getting it to unlock faster is to look right into the sensor, which is the smaller circle next to the camera in the top right corner
Should've clarified the dqa issue is not what i'm worried about, just wanted to point out the weirdness of these bugs, It's the fingerprint issue i'm worried about
Mine does the same thing....TMobile version....It works great, and then randomly won't work at all and I have to reboot
I have the same problem here.
Weird, I noticed this issue today
Posted in the other thread about the same problem. I noticed this today as well. Most of the time significantly moving the phone and scanning my finger again seems to work. I am yet to encounter this issue when the phone is actually unlocked authenticating to an app or something. So far it all seems to be limited to the lock screen in that the phone does not want to register a scan of the finger at all, as though the scanner is not there.
Same
GGgamer16 said:
My fingerprint sensor will just stop working and I need to reboot it in order to make it work again. It doesn't detect my finger at all , it's like its dead. I have the Verizon s8+, pre ordered it and got it on 4/20. I don't suffer from the dqa issue but i have another s8 plus, also pre ordered that does suffer from the issue. Anyone know of a fix or know how we can bring this to light in order to get it fixed
Click to expand...
Click to collapse
Same, I really dont want to get a new one. I need a answer and your the only post of source that has the same problem as me.
Same issues here, very annoying. T-Mobile version. We have two S8 and one of them is working fine, the other one it's having fingerprint issues. Any ideas on how to fix this? I hope is a software issue.
johnminea said:
Same issues here, very annoying. T-Mobile version. We have two S8 and one of them is working fine, the other one it's having fingerprint issues. Any ideas on how to fix this? I hope is a software issue.
Click to expand...
Click to collapse
I think it is software related. It seems to intermittent and in my case seems to be related to limited movement before scanning the finger as I only see this when trying to unlock. In other words, it seems the unlock needs an accelerator event before unlock event to work, and no movement such as a finger resting on the screen doesn't detect.
Have you tried disabling Optimize Battery Usage for the Fingerprint system app?
Mine is doing the same thing. It's almost completey random as to when the fingerprint sensor works. It's not as if it isn't recognizing my fingerprint, it's as if the sensor is completely dead or inactive. I'm tempted to return the phone and re-order but I have a trip coming up that I would like the phone for but if I wait until I return I will be past my 20 days.
Very frustrating after having to return my Note 7 like 3 times.
Does this seem software related?
Not sure it is software related. I have another S8, same carrier (T-Mobile) same firmware same software updates, version etc. Both came on April 19. Mine is having issues since I got it, the other one 7 days later no issues at all. I called Samsung and they told me if a factory reset does not solve the issue, to go to the store and get a new one. I will get a replacement tomorrow. I am on the edge with Samsung coming from a Note 7 user....
johnminea said:
Not sure it is software related. I have another S8, same carrier (T-Mobile) same firmware same software updates, version etc. Both came on April 19. Mine is having issues since I got it, the other one 7 days later no issues at all. I called Samsung and they told me if a factory reset does not solve the issue, to go to the store and get a new one. I will get a replacement tomorrow. I am on the edge with Samsung coming from a Note 7 user....
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Click to collapse
That's good to know. I ordered mine online through T-Mobile and they require me to send it back through the mail. They won't let me exchange it in store. So dumb. They also won't send me out the replacement before I send the broken one back. Looks like I will be without a phone for a few days.
I'm getting real sick of this loss of quality control with Samsung.
'
Yeah same here, but. You can call customer service and ask them to send the replacement phone at a store near you. This is what they have done for me. I will go tomorrow to pick up the replacement phone and I will give them back the old one. Is stupid but it is what it is. I think because the stores are individual franchises, maybe. who the heck knows. If the second one does the same I am pretty much done with Samsung. I had enough with my Note 7, now this. grrr
So this morning I once again had the sensor shut down. It's not just on the lock screen. After unlocking with the pin I was unable to use the fingerprint sensor to bring the notification menu down either.
I'm going to go to Verizon after work today and get a replacement.
I had no time to go and get the replacement today. However, no issues in the last 48 hours. For some reason is just working. I might go tomorrow and get a new one just to be on the safe side, I hope.
johnminea said:
I had no time to go and get the replacement today. However, no issues in the last 48 hours. For some reason is just working. I might go tomorrow and get a new one just to be on the safe side, I hope.
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Mine happened first on 4/20 and it had not done it again until today. So I'm just going to go in and exchange it.
Gary02468 said:
Have you tried disabling Optimize Battery Usage for the Fingerprint system app?
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Where is that setting
Well I took the phone into Verizon and they refused to exchange it. They said it's a software problem.
Gary02468 said:
Have you tried disabling Optimize Battery Usage for the Fingerprint system app?
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Click to collapse
I just did it, when Imade the thread I didn't know where to find the option, upon looking further I found it.
For anyone wondering, go to apps, then app manager, then in the upper right corner click on the option icon , then click on special access, then click on optimize battery usage, then click on "Apps not optimized" and then select "All apps", then scroll down and look for Fingerprint app(I don't know if this is the only app having to do with the fingerprint sensor) and untoggle it.
P.S. I dont know if this works or not, as I have not experienced the bug for over 36 hours
Edit: this did not work, I just experienced the bug again, the fix is to go to
lock screen and security, then to secure lock settings, and set the automatic lock to immediately.
Edit #2: This did not work , see OP for more info

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