Fingerprint sensor/gesture issues - Samsung Galaxy S8 Questions and Answers

Hi, so I enabled fingerprint gestures in Settings and there will be times when the sensor and gesture won't work. I would have to either restart my phone or disable then enable gestures again for it to work. I'm not sure if this is a bug or just a poor fingerprint sensor on the S8. Anyone else having this same issue and know of a permanent fix? I contacted Samsung and all they said was to clear the fingerprint sensor cache and if that don't work try in safe mode then factory reset if necessary.

wahsu88 said:
Hi, so I enabled fingerprint gestures in Settings and there will be times when the sensor and gesture won't work. I would have to either restart my phone or disable then enable gestures again for it to work. I'm not sure if this is a bug or just a poor fingerprint sensor on the S8. Anyone else having this same issue and know of a permanent fix? I contacted Samsung and all they said was to clear the fingerprint sensor cache and if that don't work try in safe mode then factory reset if necessary.
Click to expand...
Click to collapse
Are you talking about Notification Swipe?
Sent from my SM-G955F using Tapatalk

thahim said:
Are you talking about Notification Swipe?
Sent from my SM-G955F using Tapatalk
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Click to collapse
Yes.

Seems like a faulty hardware... On mine it works flawlessly.
I place my finger over the sensor, it takes half a second and the screen turns on unlocked. Also, the gestures for the notification bar (which I don't use), work without a problem.
Try wiping everything and even flashing a new stock rom from SamMobile .
If this doesn't work, bring it back where you bought it and request a new unit.

Related

Disable quick launch for camera????

This is driving me crazy! There is a feature on the G2 where of the screen is off you can press and hold the volume down for 3 seconds and the camera will launch. Is there a way to disable this??? It bypasses the lock screen which is a no no!
There isn't as far as I know. However, putting a case on the phone solves the issue
Sent from my LG-D802 using XDA Premium 4 mobile app
It does not bypass the lockscreen if you have anything besides swipe and no lock set set... the proximity sensor won't let it even work if covered. VS980.
You can with xposed if you're rooted, otherwise I don't think there is a way to disable it completely.
Sent from my VS980 4G using Tapatalk
Steamer86 said:
It does not bypass the lockscreen if you have anything besides swipe and no lock set set... the proximity sensor won't let it even work if covered. VS980.
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Click to collapse
The proximity sensor doesn't prevent the camera or QuickMemo app from launching off the volume buttons (when locked) - just tried this by covering the sensor - camer/app still launch. However, the QuickWindow case does prevent this action when the case is closed...
Get a QuickWindow case (or stick a magnet on the screen about two thirds up the left hand side :cyclops
B.

Flashlight gesture

Back again with another bug.
Ok, so to use the flashlight gesture you have to light up the screen using the power button. Fine. But I have to shake it really violently to get it to react and turn on. It's actually quicker to unlock the screen using the fingerprint sensor and then use the drop-down shortcuts.
Can someone tell me if they have the same issue? Beginning to think I have a lemon and might be better off getting a replacement while I can.
Thanks in advance.
ludovicien said:
Back again with another bug.
Ok, so to use the flashlight gesture you have to light up the screen using the power button. Fine. But I have to shake it really violently to get it to react and turn on. It's actually quicker to unlock the screen using the fingerprint sensor and then use the drop-down shortcuts.
Can someone tell me if they have the same issue? Beginning to think I have a lemon and might be better off getting a replacement while I can.
Thanks in advance.
Click to expand...
Click to collapse
My flashlight gesture is almost identical to the moto x flashlight gesture (chop chop). Work great, just wish the screen didn't need to be on.
Edit: scratch that, it's a lot worse since updating to B27. Will add this to my big bug list. Thank you!
Same issue here since the update. I shake it big time and it won't even turn on.

Order of lockscreen images

Hi, does anyone know if it's possible to control the order of the "magazine cover" images on the lock screen? I figured out had to add my own covers, but it seems to display them in the order they were added. I would prefer either random or sorted by name. Thanks.
https://www.youtube.com/watch?v=2_j7tfSbXSA&t=94s
I have a problem with that tablet fingerprint sensor, it works when it wants and after a while the tablet stops working. Even the menu settings disappears, fingerprint ID is gone
when I restart the effect is zero only when I reset the factors it works but after a while the fingerprint sensor refuses to work again. Does

Cameras not alternating

Hi. Does anybody else has a problem when launching the camera with the screen locked (with double tap in the power button or quick toggle on the lock screen) you can't change between the lenses? When I click I get a vibration kind like if I was trying to use the fingerprint sensor. When I unlock the phone and open the camera it works fine. Tried clearing cache, rwbooting phone still has this issue!
Works fine here
Intratech said:
Works fine here
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Click to collapse
Here used too work fine as well. Suddenly this started to happen. Only when opening with screen locked
Anyone else with this problem? Still can't switch between the 3 cameras when launch the camera from lock screen
This is caused by goodlock's notistar.
Disable it in lockscreen
NonXtreme said:
This is caused by goodlock's notistar.
Disable it in lockscreen
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Click to collapse
Wow! That worked! Thank you very much! That was driving me crazy

Proximity sensor not working

Hi.
I have problem with proximity sensor. While making a phone call, display is always on.
I tried to enable it in settings. Turned it on, rebooted my phone and nothing happened.
Also tried *#*#6484#*#* solution, and when I open proximity sensor, there are 'test' and 'error' buttons on the screen and I can't click anything.
Does anyone know how to fix this?
In the engineering menu * # * # 6484 # * # * we find 27 - Proximity sensor
When approaching the palm to the front camera should show "0".
I always showed "5", did not want to be calibrated.
I pressed Error, went out and went to the engineering menu, a miracle happened - it was calibrated.
stanley56 said:
In the engineering menu * # * # 6484 # * # * we find 27 - Proximity sensor
When approaching the palm to the front camera should show "0".
I always showed "5", did not want to be calibrated.
I pressed Error, went out and went to the engineering menu, a miracle happened - it was calibrated.
Click to expand...
Click to collapse
No, nothing happened. As usuall, screen is always on.
Yes, proximity sensor in settings was on and I have rebooted the phone.
I really don't know what to do. Is it because of bug in Global Rom or is it hardware malfunction?
Fortis10 said:
No, nothing happened. As usuall, screen is always on.
Yes, proximity sensor in settings was on and I have rebooted the phone.
I really don't know what to do. Is it because of bug in Global Rom or is it hardware malfunction?
Click to expand...
Click to collapse
Hold your phone with your left hand. The placement sensor gets blocked by your right ear when you make calls using your right hand. Give it a go and get back to us.
DelphinusMinor said:
Hold your phone with your left hand. The placement sensor gets blocked by your right ear when you make calls using your right hand. Give it a go and get back to us.
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Click to collapse
Ok, non-related to left and right hand.. Now my phone gets black screen all the time during calls. I can't put it on speaker or do anything while talking with someone. I really don't know what's happening...
Fortis10 said:
Ok, non-related to left and right hand.. Now my phone gets black screen all the time during calls. I can't put it on speaker or do anything while talking with someone. I really don't know what's happening...
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Click to collapse
I can't help there but left/right holding is an issue I guess with this phone. Or maybe it's the Pro. I forget offhand.
Fortis10 said:
Ok, non-related to left and right hand.. Now my phone gets black screen all the time during calls. I can't put it on speaker or do anything while talking with someone. I really don't know what's happening...
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Click to collapse
Obviously the proximity sensor is at fault. Enter the menu using the code mentioned above, then press the menu/options button and select Calibrate proximity sensor. Once you're there, hold your hand over the proximity sensor (to the right of the front camera) and tap the Calibrate button. That's one thing that could fix it.
Failing that, go to incoming call settings and turn off the proximity sensor (turn off screen in call). Restart your phone, go to the same toggle and turn it on.
If neither of these works, you likely have a faulty piece of hardware. Your last option is to have the phone repaired or try a different kernel/ROM.
Fortis10 said:
Hi.
I have problem with proximity sensor. While making a phone call, display is always on.
I tried to enable it in settings. Turned it on, rebooted my phone and nothing happened.
Also tried *#*#6484#*#* solution, and when I open proximity sensor, there are 'test' and 'error' buttons on the screen and I can't click anything.
Does anyone know how to fix this?
Click to expand...
Click to collapse
Hi , are you on miui global stock rom? Or custom rom?
I just had the same issue , but in my case , I recently opened the bootloader and installed xiaomi.eu rom, everything was working fine. I got notification of update ,I downloaded the update , but flash it thru TWRP , and then with the new update, the proximity was not working at all. Flash again the new rom, but wiping everything , and now works.
jonathan_jon said:
Hi , are you on miui global stock rom? Or custom rom?
I just had the same issue , but in my case , I recently opened the bootloader and installed xiaomi.eu rom, everything was working fine. I got notification of update ,I downloaded the update , but flash it thru TWRP , and then with the new update, the proximity was not working at all. Flash again the new rom, but wiping everything , and now works.
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Click to collapse
Is the EU rom that better?
I mean is there any plane to compare the known issues between the global and EU ?
I'm using the miui global 10.3.3.0 PFGEUXM and definitely have some "issues" with the proximity sensor.
I'm still trying to tie down the exact nature of the problem:
With a quick test, or doing calibration, it seems to work exactly as I would expect; the screen switches off as you approach closer than about 2 inches.
However during a long call I notice the display start to flash "on" frequently in the corner of my eye and soft keys can get inadvertently pressed.
It kinda feels like it gets worse during the call, is it time or perhaps the phone warming up in my hand? Not sure.
hi @All!
is there still no permanent solution for fixing proximity bug?
its really annoying and making me crazy....
even after making it working again using quicktune app - doing one call it is broken again
fasty said:
I'm using the miui global 10.3.3.0 PFGEUXM and definitely have some "issues" with the proximity sensor.
I'm still trying to tie down the exact nature of the problem:
With a quick test, or doing calibration, it seems to work exactly as I would expect; the screen switches off as you approach closer than about 2 inches.
However during a long call I notice the display start to flash "on" frequently in the corner of my eye and soft keys can get inadvertently pressed.
It kinda feels like it gets worse during the call, is it time or perhaps the phone warming up in my hand? Not sure.
Click to expand...
Click to collapse
Exactly what i've experienced.
Super annoying when you accidentally hang up during a call.
It happend countless times so far.
I'm on eu beta btw.
Wish there would be a solution.. . But afaik proximity is even more bugged in non miui custom roms.
I had this problem to. my proximity sensor what not responding at all. I thought it was defective because the calibration was not working to.
Then i went to the system update settings, downloaded the latest package and flashed it. After reflashing it started working with no problem at all.
Factory reset did the trick for me. Working normally now.
Install Quick Tuneup. Then do Sensor Celebration & Restart your device twice.
Two solutions
Fortis10 said:
Hi.
I have problem with proximity sensor. While making a phone call, display is always on.
I tried to enable it in settings. Turned it on, rebooted my phone and nothing happened.
Also tried *#*#6484#*#* solution, and when I open proximity sensor, there are 'test' and 'error' buttons on the screen and I can't click anything.
Does anyone know how to fix this?
Click to expand...
Click to collapse
It turns out that the problem is because MIUI does not activate the proximity sensor when the smartphone is turning on.
To force MIUI to ALWAYS activate the sensor at each start, we can do two things:
1- Always have "Automatic brightness" activated
2- Activate the "Pocket mode" (the best choice)
After applying one of these situations, it is necessary to restart the phone.
Only by activating the pocket mode it is no longer necessary to have automatic brightness activated all the time.
In the video I show how to activate the "pocket mode"
w w w . youtube.com/watch?v=2dfrqmH02O8
I published this solution in a forum in my country (Colombia).
w w w . laneros.com/temas/soluci%C3%B3n-sensor-de-proximidad-xiaomi.239997
I don't speak English, I had to use the google translator, sorry for any translation error.
2- Activate the "Pocket mode" (the best choice)
After applying one of these situations said:
KMILO_PARRA is a KING .........................
above is proof to SOLVE the Proximity Sensor no reaction in my Redmi Note 7.
I was having lots of TASKER Profile depending on whether or not Proximity Sensor is covered.
I found all those Profiles no more function due to the issue after I believe OTA to Global rom the latest ( August-2019 )
Thanks again to KMILO_PARRA
Click to expand...
Click to collapse
Actually, the proximity sensor for Redmi Note 7 isn't in the "usual" top-center position, it's a little bit on the top-right edge (if you watch the phone "against the light" you can actually see a small dot on that side).
If you're calling\responding try to put your ear at that angle, you'll never have those problem anymore.
I know it seems crazy, and of course the first times could be "unusual" to put the ear there, but it actually worked out flawlessly for me.
Mr
Quaresma_7 said:
Obviously the proximity sensor is at fault. Enter the menu using the code mentioned above, then press the menu/options button and select Calibrate proximity sensor. Once you're there, hold your hand over the proximity sensor (to the right of the front camera) and tap the Calibrate button. That's one thing that could fix it.
Failing that, go to incoming call settings and turn off the proximity sensor (turn off screen in call). Restart your phone, go to the same toggle and turn it on.
If neither of these works, you likely have a faulty piece of hardware. Your last option is to have the phone repaired or try a different kernel/ROM.
Click to expand...
Click to collapse
Thanks.....
It works for me
Hi guys,
I have made a little workaround, using the suggestion of @KMILO_PARRA user. (pocket)
https://taskerprofilecenter.blogspot.com/2019/09/project-proximity-sensor-workaround-for.html
This is mainly for Tasker users, but I have generated an APK to be installed too. So any user can use it. But what is needed, by now, is root, as it needs to write to Settings table.
Please, report me back if it does the job or not.
Note1: For those users that don't know how Tasker works, just install the app, and give it root permissions, and allow Write System Settings permission (Android option). I recommend you to not set it as an app to be killed from the OS using the battery optimization, as it could be killed. It acts on every shutdown and device boot.
Note2: It will generate two permanent notifications: Place holder, and the one that is the mini-Tasker code monitor (required). Just, disable the Place holder one, as described in the same notification (click on it), and disable notifications completely for the installed app to get rid of the last one.
---------- Post added at 12:44 AM ---------- Previous post was at 12:31 AM ----------
What it does exactly?
Well, as I explained on my web, it just changes the value (0/1) from the 'enable_screen_on_proximity_sensor' Global Settings table, that makes the pocket option to be toggleable in an automated way.
So, be sure not to use that option as a daily one, as the project/app uses it to allow the sensor be available at startup. And do not forget that you will need root too! Sorry.
What to download if I don't know what Tasker is?
You will only have to download the APK from the 'Kid App (APK)' link, provided under the 'DOWNLOAD' section. Nothing else.
If you know Tasker, you will know what to do.
Does it work really?
I'm currently testing this workaround, but as I could see, at least on my device (lavender too), seems to be working as expected. But needs to be tested a little more.
So, if it does not what it's intented for, please, report it me back.
After installing the app, giving root permissions, and allow it to modify system settings, reboot the device to take it effect.

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