Database Develop

Burn in? No, but it's weird.

Since I have only had my Mi 9 for less than a month, it should be impossible that it already has a Burn In...
However on the part of the screen where the fingerprint sensor sits, I noticed a grey-ish circle, which is exactly the size of the fingerprint. Since Burn In after 2 weeks should be impossible I turned the phone off and restarted it after a Minute and the spot was gone.
Now 2 hours later it is there again.
I don't even use the fingerprint sensor very often, only if I can't use face unlock...
Did anyone experience a similar problem?
(Btw, it's not software, I took a screenshot and it wasn't there)

Moischen said:
Since I have only had my Mi 9 for less than a month, it should be impossible that it already has a Burn In...
However on the part of the screen where the fingerprint sensor sits, I noticed a grey-ish circle, which is exactly the size of the fingerprint. Since Burn In after 2 weeks should be impossible I turned the phone off and restarted it after a Minute and the spot was gone.
Now 2 hours later it is there again.
I don't even use the fingerprint sensor very often, only if I can't use face unlock...
Did anyone experience a similar problem?
(Btw, it's not software, I took a screenshot and it wasn't there)
Click to expand...
Click to collapse
Well, that's interesting... Do follow this up to let us know what's up.
Before I got my Mi 9 yesterday, I clocked a full 4 years on my Note 4, and never experienced burn in... In fact, I would argue that the display looks the same today, as it looked the day I bought it. (no noticeable brightness drop)

i have experienced this on every "in display fingerprint" phone i've owned, and all it it is the optical sensor slightly visible with the screen off .

Moischen said:
Since I have only had my Mi 9 for less than a month, it should be impossible that it already has a Burn In...
However on the part of the screen where the fingerprint sensor sits, I noticed a grey-ish circle, which is exactly the size of the fingerprint. Since Burn In after 2 weeks should be impossible I turned the phone off and restarted it after a Minute and the spot was gone.
Now 2 hours later it is there again.
I don't even use the fingerprint sensor very often, only if I can't use face unlock...
Did anyone experience a similar problem?
(Btw, it's not software, I took a screenshot and it wasn't there)
Click to expand...
Click to collapse
Hey Man sorry for telling you so but this gray spot is the actual hole that your phone needs for the indisplay fingerprint scanner to work. You cannot notice it in all conditions. To test it go out in the sun max out the brightness and use a completely white photo.
P.s. there is another hole near your notch which is your proximity sensor

Serbinhio said:
Hey Man sorry for telling you so but this gray spot is the actual hole that your phone needs for the indisplay fingerprint scanner to work. You cannot notice it in all conditions. To test it go out in the sun max out the brightness and use a completely white photo.
P.s. there is another hole near your notch which is your proximity sensor
Click to expand...
Click to collapse
yes thats correct the circle is only to assist you with the position of fingerprint sensor, its the same in my huawei mate 20 Pro, cheers

I wish I knew all this before I sold my Mi 8 Pro for dirt cheap lol

Fingerprint AOD

Is it possible to remove fingerprint from aod on p30 pro without removing fingerprint sign in? I can't find settings for it...

I don't know about yours, but mine isn't there until I pick up the phone or touch the screen?
If you want to completely remove it then you can't - the way the finger print sensor works requires the screen to light up at max brightness under your finger so it can capture the fingerprint with the optical sensor.
Watch the 'JerryRigEverything' YouTube teardown to find out more info on how it works, but when scanning for a fingerprint it needs the illumination

milosmeda said:
Is it possible to remove fingerprint from aod on p30 pro without removing fingerprint sign in? I can't find settings for it...
Click to expand...
Click to collapse
I was wondering this too as I'm starting to get slight screen burn from a combination of that and the intense light required to unlock. My S10+ has an option to turn it off, and muscle memory dictates that it isn't really necessary after a few days of use.

leoni1980 said:
I was wondering this too as I'm starting to get slight screen burn from a combination of that and the intense light required to unlock. My S10+ has an option to turn it off, and muscle memory dictates that it isn't really necessary after a few days of use.
Click to expand...
Click to collapse
As I said above, the reason for the intense light is that it uses and optical sensor rather than an ultrasonic sensor (as used in the S10+). Without the light it simply will not be able to see fingerprints.

NJ72 said:
As I said above, the reason for the intense light is that it uses and optical sensor rather than an ultrasonic sensor (as used in the S10+). Without the light it simply will not be able to see fingerprints.
Click to expand...
Click to collapse
I understand that but I'd like to at least be able to turn off the fingerprint indicator. I hold my phone in my hand most of the day so it's a bit annoying that it pops up every time you move the phone. You can switch off this indicator on the S10 and it has nothing to do with the technology - it's just a guide.

Fingerprint sensor question

Hello people
Also, does any of you have a problem with the fingerprint reader response when using night reading (red filter mode for less eye fatigue).
By day (auto contrast set - stock) and the reader responds without problems.
However, when it gets dark and the phone starts to use night reading, the reader is often unresponsive.
Of the 4 scanned images, it usually takes only one, so I have to put my finger the same way to unlock the phone.
I use protective glass (9H 2,5D curved, tempered by Sigisi).
But I think there will be no problem, because the reader reacts with the glass without problems during the day.
Thanks for the reaction.

I guess that the night mode plus the protective glass is a bad combination

Did you set the fingerprint after applying the glass or before?

With the night reader mode it shouldn't be any problem. The phone automatically, when it detects a finger on the sensor, disables All screen filters. If you notice, when the blue light of the sensor appears, you'll notice that some colors lower it's contrast for a more precise scan. And with the glass, I have a non branded 5D glass and it works perfect. In the only situation that fails reading my finger, it's when I have my fingers wet (by the swimming pool) and wrinkled, but I think that it happens with every Fingerprint scanner. If the scanner works without the glass. The problem is the glass. If not. You want the warranty to remain valid

After aplying

Im thinking about buying this phone, but what worries me if fingerprint scanner works well with protective glass?

I'm using generic tempered glass from the start. Even registering my fingerprints with glass on. No problem so far. Just little advised,I'm using only my right thumb to unlock,and what I did is I repeatedly registered the fingerprint while I'm holding the phone so it will be more accurate.
By the way. I' also set my phone to be on reading mode at night.so far no problem with it. I'm on miui 11.3.3,stable official global rom.

axlina said:
Im thinking about buying this phone, but what worries me if fingerprint scanner works well with protective glass?
Click to expand...
Click to collapse
Just use a glass one and it should be fine, at least for me its 100%

Proximity Sensor Issue

I am having an issue where always on display is staying ON while in pocket/faced down on the table. Feels like the proximity sensor is not working while on the AOD.
Plus, the proximity sensor doesn't seem to work while in the pocket either. The setting 'prevent accidental touches' has been enabled, however it is still responding to 'double tap to wake' while in the pocket for whatever reason...
Is there any fix to this?

I noticed the AOD stays on in my pocket as well. I thought maybe it was by design that way, even though it makes no sense.
Have not had a single pocket wakeup though.
It does seem that the proximity sensor (which is really the camera) doesn't work especially well though, from reports of people noticing it on phone calls. Hopefully something that can be fixed in software.

jdock said:
I noticed the AOD stays on in my pocket as well. I thought maybe it was by design that way, even though it makes no sense.
Have not had a single pocket wakeup though.
It does seem that the proximity sensor (which is really the camera) doesn't work especially well though, from reports of people noticing it on phone calls. Hopefully something that can be fixed in software.
Click to expand...
Click to collapse
Thanks mate, appreciate your feedback. Proximity sensor works fine on my phone during calls. Can't think of any reason why Samsung would intend it this way...

Proximity sensor issue here as well
I have the same problem. I put phone into test mode and it was bad compared to my wife's s9 search proximity sensor s20fe on YouTube and see others with issue

There is no fix. This is apparently the way AOD works now. I can't remember if it started with the S10s or S20s.

uggies said:
I am having an issue where always on display is staying ON while in pocket/faced down on the table. Feels like the proximity sensor is not working while on the AOD.
Plus, the proximity sensor doesn't seem to work while in the pocket either. The setting 'prevent accidental touches' has been enabled, however it is still responding to 'double tap to wake' while in the pocket for whatever reason...
Is there any fix to this?
Click to expand...
Click to collapse
I did some research on s20fe proximity sensor, because I desperately wanted flip case to open and close the screen.
Here is what I have noticed: there are two "proximity sensors" both sides of the front camera. These sensors close the screen during call if you touch them (I'm not sure if it's enough to touch just 1 or do you have to touch both of them). You need to touch these with your cheek or finger cause they need a electric field.
Phone also utilizes front camera light sensor during call: if there is no light, it turns off the screen but for this to happen phone needs to be on up right position. Screen won't close if the phone is on desk and you cover the camera.
So anyways, my point is that the proximity sensor is not able to detect if your phone is in the pocket or not. Only way for the phone to detect this is with the front camera light sensor, and I guess this would increase the battery consumption so much, there is no point.
You can test your "proximity sensors" by typing *#0*# in dialer numpad, select sensors and touch from the side of the front camera. If the screen turns green sensors are working.

No problems with Verizon S20 FE 5G UW
Huberttus said:
I did some research on s20fe proximity sensor, because I desperately wanted flip case to open and close the screen.
Here is what I have noticed: there are two "proximity sensors" both sides of the front camera. These sensors close the screen during call if you touch them (I'm not sure if it's enough to touch just 1 or do you have to touch both of them). You need to touch these with your cheek or finger cause they need a electric field.
Phone also utilizes front camera light sensor during call: if there is no light, it turns off the screen but for this to happen phone needs to be on up right position. Screen won't close if the phone is on desk and you cover the camera.
So anyways, my point is that the proximity sensor is not able to detect if your phone is in the pocket or not. Only way for the phone to detect this is with the front camera light sensor, and I guess this would increase the battery consumption so much, there is no point.
You can test your "proximity sensors" by typing *#0*# in dialer numpad, select sensors and touch from the side of the front camera. If the screen turns green sensors are working.
Click to expand...
Click to collapse
I just purchased the Samsung S20 FE 5G UW (how about we shorten this to FE UW?) with all updates AND a glass screen protector and have no touch/proximity issues.
FYI I bought it at the Costco kiosk for a few dollars less per month, no activation charges and a 90 day return policy.

the Galaxy S20 FE (5G) has no physiscal proximity sensor.
Insted it uses a combination of the front camera, touch screen and gyroscope.

I have tested the proximity issues, luckily for me there were ok...turn green. The only thing that drive me crazy is the touch screen issues which never been fixed even after updates. Oh well at least its better than before.

Huberttus said:
I did some research on s20fe proximity sensor, because I desperately wanted flip case to open and close the screen.
Here is what I have noticed: there are two "proximity sensors" both sides of the front camera. These sensors close the screen during call if you touch them (I'm not sure if it's enough to touch just 1 or do you have to touch both of them). You need to touch these with your cheek or finger cause they need a electric field.
Phone also utilizes front camera light sensor during call: if there is no light, it turns off the screen but for this to happen phone needs to be on up right position. Screen won't close if the phone is on desk and you cover the camera.
So anyways, my point is that the proximity sensor is not able to detect if your phone is in the pocket or not. Only way for the phone to detect this is with the front camera light sensor, and I guess this would increase the battery consumption so much, there is no point.
You can test your "proximity sensors" by typing *#0*# in dialer numpad, select sensors and touch from the side of the front camera. If the screen turns green sensors are working.
Click to expand...
Click to collapse
Mate great information here, really appreciate this.
Tested the Proximity sensor using *#0*#, I agree with your analysis. The proximity must be using electric reaction to detect if my ears are touching it or not. Covering it with a book does not trigger a proximity sensor... This explain why my screen keeps waking up in the pocket.
As much as this is annoying, there appears to be no way out Just have to let the phone face outside rather than my legs.

I also have the same issue, while on a phone call, the phone's screen goes on and off constantly and I can see the notification bar moving. Very annoying.
This is a terrible design by Samsung. The punch hole usually goes in the "Empty" part of the ear, so the screen stays mostly on.
I might just return the phone because of this issue, I don't see it getting fixed by a software update.

I have the exact opposite issue with the proximity sensor on my Samsung S20 plus running Android 10 - i.e. it works well by turning the screen off when my ear/cheek/face is very close to the proximity sensor during phone calls; whereas, when the phone's screen is locked and turned off, the proximity sensor is turned off as well. Control by hardware? Software/firmware? Don't know?! To turn the screen on without using the Power hardware button, I had to enable the "Double Tap" feature in Settings.
On earlier/other Android mobile devices - Samsung included - the proximity sensor is always on - whether the screen is on, off, or currently locked. When it's always on, you can be innovative and build a widget, for instance, to turn the screen on by "waving" your hand above the proximity sensor to interrupt the laser. I suspect new(er) Samsung mobile devices like S20 and Note20 variants might be using a "virtual" proximity sensor setup/combo for controlling the device's screen - and that really sucks!
To test if the proximity sensor is always activated on Samsung S20 and Note20 variants, I type *#77692# - which displayed a hardware screen to test proximity and light sensors. Note: if you type *#0*#, the proximity and light sensor options are absent from the hardware test screen.
Has anyone found any method - via codes even - to permanently turn on the proximity sensor, even when the screen is locked and turned off?
I searched through AOSP framework vanilla codes and couldn't see anything out of the ordinary regarding control of the proximity sensor. Samsung might be doing something dubious with their firmwares/hardwares though - well, at least, the S20 and Note20 variants are having issues with the proximity sensor setup.
P.S: Not sure if you guys are aware, but Samsung mobile devices with odd designation tends to be more problematic than their even-designated counterparts, like screen's burn-ins/shadows on Samsung S3 devices, light sensor fluctuation (which affects screen brightness control) on Samsung S5s, and now proximity problems with the S20s and Note20. Samsung S20 variants are in fact "S11" variants renamed. So the trend continues with Samsung always stuffing up their odd-designated device releases.

Question Fingerprint reads in the dark

Hey guys,
I just put on a cheap but decent flat screen protector and reregistered my finger prints. Also turned up the sensitivity to high but I have issues with secure apps in the dark. For example my bank apps etc and after 3? Failed log on then other apps disable the fingerprint login that was working.
This is super irritating.
I just set it to auto unlock at my home and with my watch but those of course don't work with the bank apps etc.
Have you seen this also/any advice?

Bank app didn't work this morning, took off the generic screen protector and it worked like a charm. Ringer to look for a Whitestone glass screen...