Iris scanner always on and emitting IR - Samsung Galaxy Note 9 Questions & Answers

Using the T-mobile Note 9 here, and I've noticed something peculiar. The front facing iris sensor is *always* on, even when it's not lit up red when scanning. Whether the screen is on or off, the scanner is on and sending IR. Even turning off biometrics doesn't stop it. I found this by chance as an infrared detector I have lights up whenever my phone screen faces it. (goes off if I cover the iris sensor).
Why is Samsung keeping the sensor on all the time, even when I turn off biometric unlock?

pakraider said:
Using the T-mobile Note 9 here, and I've noticed something peculiar. The front facing iris sensor is *always* on, even when it's not lit up red when scanning. Whether the screen is on or off, the scanner is on and sending IR. Even turning off biometrics doesn't stop it. I found this by chance as an infrared detector I have lights up whenever my phone screen faces it. (goes off if I cover the iris sensor).
Why is Samsung keeping the sensor on all the time, even when I turn off biometric unlock?
Click to expand...
Click to collapse
My best estimate would be that this will be used as the proximity sensor.
OK, false, if you open the sensor test menu in the dialer by keying in "*#0*#", then open sensor test, you will notice that the sensor right next to the IR emitter is the proximity...
Maybe it would assist the proximity?
Sent from my [device_name] using XDA-Developers Legacy app

Isn't this supposed to be bad for the eyes?
Samsung itself says during setup that the iris scanner should not be used on children, and also, when a person uses it, for safety it should be held around 25cm or more from the face..
If it is always on maybe it is better to cover it up?

Yeah, it can damage your eyes. The reason it's supposed to be safe is that your exposure is so low (just when you unlock). But it's on all the time!

TML1504 said:
My best estimate would be that this will be used as the proximity sensor.
OK, false, if you open the sensor test menu in the dialer by keying in "*#0*#", then open sensor test, you will notice that the sensor right next to the IR emitter is the proximity...
Maybe it would assist the proximity?
Click to expand...
Click to collapse
Still, there's no reason for it to be on when the phone is locked and the screen off.

pakraider said:
Still, there's no reason for it to be on when the phone is locked and the screen off.
Click to expand...
Click to collapse
Could be for sensing if your phone is in your pocket, there is such a setting.
Sent from my [device_name] using XDA-Developers Legacy app

TML1504 said:
Could be for sensing if your phone is in your pocket, there is such a setting.
Click to expand...
Click to collapse
I disabled that to test, still stays on.

pakraider said:
Yeah, it can damage your eyes. The reason it's supposed to be safe is that your exposure is so low (just when you unlock). But it's on all the time!
Click to expand...
Click to collapse
I mean, if it is always on, what is the difference from when you are trying to use it to unlock your phone? If it is on all the time, it would be damaging every user's eyes all the time while they are using the phone..

Did you check that it is actually the iris thing sending IR, and not the proximity sensor? E.g. put a small piece of foil on top of a specific hole and see if the IR detector still reacts? (Afaik, proximity sensors using IR should be safe.) Proximity sensor might be "always" on for detecting pocketing as mentioned earlier.

Has this been sorted out?

Bump

melchiar said:
Bump
Click to expand...
Click to collapse
Please don't bump threads in under 24 hours.
This isn't a bug and it also isn't something to worry about. Unlike others have stated in this thread, the tiny amount of IR that is emitted is so small, it'd never have any health impact.
It's more than likely that OP's detector is picking up the IR from the proximity sensor, a sensor that is constantly on and emitting IR.

Try turning off all these functions and report back.
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How did you find that your IR diode is still on? Did you take another phone and via it`s camera notice glowing? Or how else?

I am pretty sure something else is emitting the light and not the iris scanner.

Just to close the loop on this, the Android Pie update has fixed this bug. Now the sensors only emit IR at the lock screen while trying to unlock.

pakraider said:
Just to close the loop on this, the Android Pie update has fixed this bug. Now the sensors only emit IR at the lock screen while trying to unlock.
Click to expand...
Click to collapse
How did you test this?
Photo's[emoji2398] by Sully using SM-N960U or SM-870A

sullytrny said:
How did you test this?
Photo's[emoji2398] by Sully using SM-N960U or SM-870A
Click to expand...
Click to collapse
I have an IR detector, which is how I picked up on this issue in the first place with the sensors always emitting IR all the time with Oreo. After the update to Pie, I verified that they are only emitting IR when trying to unlock the phone on the lock screen and they turn off right afterwards.

pakraider said:
I have an IR detector, which is how I picked up on this issue in the first place with the sensors always emitting IR all the time with Oreo. After the update to Pie, I verified that they are only emitting IR when trying to unlock the phone on the lock screen and they turn off right afterwards.
Click to expand...
Click to collapse
It's to bad you didn't have a chance to reset to factory because there is a proximity sensor but I have not looked up how it should work
Photo's[emoji2398] by Sully using SM-N960U or SM-870A

I've just discovered my Note 9 always has an IR light on, VIA security cam with night vision. It got the Android 10 update recently. I don't know if this was happening before the update.
Does anyone know how to turn it off?

Related

Dimming the brightness even further?

I have the brightness set to zero, but I still find the screen too bright especially at night when the lights are off. Even at the lowest setting, the browser will light up the entire room and its very hard on the eyes. Is there a way to lower the brightness even further? Is there a hack available that will do this?
scrappyabs2 said:
I have the brightness set to zero, but I still find the screen too bright especially at night when the lights are off. Even at the lowest setting, the browser will light up the entire room and its very hard on the eyes. Is there a way to lower the brightness even further? Is there a hack available that will do this?
Click to expand...
Click to collapse
You can wear sunglasses while looking at your phone at night.
supremeteam256 said:
You can wear sunglasses while looking at your phone at night.
Click to expand...
Click to collapse
I wish that were true, but unfortunately I don't own prescription sunglasses.
you could hit the end button so the screen goes off
gridlock32404 said:
you could hit the end button so the screen goes off
Click to expand...
Click to collapse
But then you can't see anything, that's almost as mental a suggestion as layering up 3 or 4 mirror screen protectors.
Instead of suggesting **** you could try to answer his question in a real way.
I think there is a way via setprop..
Try this in terminal (after su)
setprop settings.display.brightness 0
Sunsglasses sounds like a good idea.
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maxisma said:
Instead of suggesting **** you could try to answer his question in a real way.
I think there is a way via setprop..
Try this in terminal (after su)
setprop settings.display.brightness 0
Click to expand...
Click to collapse
Thanks for chiming in with an actual suggestion. I tried changing the setprop setting to 0, but it didn't decrease my brightness any further than what I can achieve in the Settings menu. It's too bad, I wonder if an app could be made to force the phone's brightness to decrease even further.
You know what... I like this suggestion. I am one of the few people that sometimes uses the phone as an alarm clock and have it sitting next to my bed. I work nights but get off work at 5 in the morning. When I get home I sleep. It's nice to wake up and look at my phone without having to reach over and hit a tiny ass button just to check the time but keeping it on means that I have a night light shining while I'm trying to sleep. So I like this idea and would like to see it dimmed by at least another 50%.
Binary100100 said:
You know what... I like this suggestion. I am one of the few people that sometimes uses the phone as an alarm clock and have it sitting next to my bed. I work nights but get off work at 5 in the morning. When I get home I sleep. It's nice to wake up and look at my phone without having to reach over and hit a tiny ass button just to check the time but keeping it on means that I have a night light shining while I'm trying to sleep. So I like this idea and would like to see it dimmed by at least another 50%.
Click to expand...
Click to collapse
I agree. I often grab my phone in the middle of the night to view new emails or google search random thoughts. My eyes get scorched though even when the brightness is turned all the way down.
I like the sunglasses idea!
how about putting on a darkened screen protector?
shaolinx said:
I like the sunglasses idea!
how about putting on a darkened screen protector?
Click to expand...
Click to collapse
Do you have a link to one?
Me too.
I do alot of surfing in the middle of the night with the wife and baby in the bed and its pretty dam bright even when set to 0.
I run the brightness widget (not sure wich one) and I also use Timerific to auto dim to 0 after like 11m.
Sometimes I will see that the brightness is set to -8. Even though it doesnt seem any dimmer than normal, its jsut an observation.
I think that If we want to go dimmer its gonna take some sort of kernel hack.
I tried setting it with a - value and it didnt work, although none of the other set prop stuff worked either I think the apps i have set are blocking it somehow.
Ill mess around with a fresh rom and see if it will go into negative.
I also noticed that sometimes when its auto setting thebrightness levels it will go below what looks like 0 brightness for about a half second before it sets to 0 so I know its physically possible for the screen to go at least a little dimmer.
i know there was a way of getting it to -13 % by playing around with the settings on the brightness widget and useful switers..

Active display while driving, walking, in pocket?

To my understanding the active display sensors use the accelerometer to judge when to turn on - I'm not talking about when it is 'breathing' after you have received and email/text/etc.
Its an awesome feature not having to go to the home screen to see this stuff. (Though when you do unlock the phone from active display you get a brief flash of the home screen - I wish it would skip it completely)
However, I'm not convinced it really does 'turn off' in my pocket since when I carry it in my hand and walk a few feet, it is constantly going on and off due to any motion. Same with inside my car. Any bumps, stops, acceleration, etc that causes the phone to jiggle even a little (usually its in a cup holder or something like that) lights up the display. I know the battery drain is supposed to be very small with it.
What are your thoughts on this? On one hand its an awesome feature that I don't want to turn off but wish it wasn't so quick to wake in the vehicle or presumably in your pocket. In any kind of city driving it will be constantly going on and off, on and off.
Also, does the active display count as screen on time? I read somewhere that its only reported under Android OS?
Try this:
Cover your sensors, wait couple of seconds move it (without uncovering them) and try to activate active display, it should not do anything.
Thats exactly what happens in your pocket (I THINK)
It's very touchy and I wish I could turn off the motion sensing just because the time flashing on and off is annoying. It barely uses battery though. Less than 1% according to my gsam stats on a full discharge
You can disable Moto Actions to stop the motion sensing.
Ally Android said:
You can disable Moto Actions to stop the motion sensing.
Click to expand...
Click to collapse
I'm pretty sure what you're talking about only disables the hand approach motion turning it on. (which is also annoying as of anything moves over your phone the screen turns on).
He is talking about movement of your phone turning display on which I believe is annoying too, perhaps more annoying than a hand motion to turn it on.
Opzon said:
I'm pretty sure what you're talking about only disables the hand approach motion turning it on. (which is also annoying as of anything moves over your phone the screen turns on).
He is talking about movement of your phone turning display on which I believe is annoying too, perhaps more annoying than a hand motion to turn it on.
Click to expand...
Click to collapse
Your right. The movement sensor appears to be a part of Moto Display. When I disabled that, the screen no longer turned on with the phone movement.
I'd like to know if the motion thing can be disabled separately as well. I like being able to wave my hand over the motion sensor to activate the ambient display, but don't like that the thing comes on every time I accelerate in my truck.
The "proximity sensor" that turns the screen off when you hold the phone to your cheek during a phone call is supposed to disable to the Ambient display, so when the phone is in your pocket, or upside down on your truck car seat, the display shouldn't be coming on, or turning on from phone movement. Try it - cover up the top 1/4" of the phone (where the camera is etc), and then try and wake the phone - I can't get mine to do anything.
I have a cubby hole in my truck where the phone fits nicely and I can still see the screen face up. Sometimes while accelerating the ambient display comes on. That's what makes me think the ambient display acts on the accelerometer as well as the front facing motion sensor.
Yep the accelerometer is the issue. After reviewing battery logs since I've started using this phone I can see there isn't much drain from the time/black display lighting up all the time and it really doesn't seem to come on in the pocket unless you make sudden movements.
However any time there is acceleration or deceleration at a sharper rate and bumps in the road it lights up. Very annoying. Can't imagine how it is on long drives, etc. And it's stupid to just say "Oh turn it over" most people have their phone in a cup holder or some cubby on their vehicle.
Proximity sensor prevents the display from activating in your pocket, period. Move all you want, the display isn't activating
Display acfivates off movement uncovered as a feature anticipating you're picking up the device to look at it. Those activations are an extremely small fraction of battery usage, not nearly enough to affect you.
I find the sensor extremely annoying and I wish I could disable it. I have the phone next to my laptop and every time I move close to it the time lights up. Very poor design if they didn't anticipate the annoyance factor and no way for one to control it.
DevilDoc_3 said:
I find the sensor extremely annoying and I wish I could disable it. I have the phone next to my laptop and every time I move close to it the time lights up. Very poor design if they didn't anticipate the annoyance factor and no way for one to control it.
Click to expand...
Click to collapse
You can disable it. Why do you think you can't? Why don't you turn it off instead of complaining about it? While it's on, it's doing exactly what it's supposed to do. Personally, I keep it turned on, because I like it.
Turn off the "wave your hand" feature if you don't like it. Wave works from even from a foot away sometimes. Turn it off, and your phone won't light up when it senses movement.
In CM/LOS based ROMs you turn off the WAVE highlighted feature you see, in Quark Ambient Display:
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Just turn off the Wave. (This screenshot was for another post a long time ago, so do not turn off the other setting highlighted.)
Various custom ROMs (Lollipop, Marshmallow, Nougat) have that setting in different places. Usually it's in Gestures, but Settings has a "search" feature you can use if you don't see it immediately.
If you are not running a custom ROM and are still on stock, I assume that setting is still somewhere on stock Moto Display -- because in the periodic debates we have people insist Moto Display has the same level of control as Quark Ambient Display.
Doing a Google Search -- which is quite easy if you want to try it sometime -- I found two answers turning off Wave in Moto Display. See what works for you:
Go to Settings -> Moto -> Actions -> disable 'Approach for Moto Display'.
Click to expand...
Click to collapse
Go to settings, accessibility, dexterity and interaction, air wake up. Your problem should now be fixed!
Click to expand...
Click to collapse

[ISSUE] Fingerprint always unlocks phone, even though proximity sensor is triggERRRR

Well, you read it. It's not a feature, it's a bug.
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I like to keep my hands in my pockets because of reasons, and since this phones fingerprint sensor is so sensitive(well, good, actually), I'm constantly unlocking it, while in my pocket. Any solution to this? And no, I won't change my lock style, because this one is the fastest and most useful all around.
Have you tried just putting your phone in your pocket screen side out, probably not the greatest idea without a tempered glass screen protector, but thought that may be a funnier answer.
One a more serious answer, isn't that what touch disable mode is used for in smart assistance. To stop random presses or functions when in a pocket or bag, I would assume that uses the proximity sensor to detect its in your pocket, I know my phone vibrates when I put my hand in my pocket and I touch the fingerprint sensor, but it never comes on until its out side the pocket.
DANIELWHITT said:
Have you tried just putting your phone in your pocket screen side out, probably not the greatest idea without a tempered glass screen protector, but thought that may be a funnier answer.
One a more serious answer, isn't that what touch disable mode is used for in smart assistance. To stop random presses or functions when in a pocket or bag, I would assume that uses the proximity sensor to detect its in your pocket, I know my phone vibrates when I put my hand in my pocket and I touch the fingerprint sensor, but it never comes on until its out side the pocket.
Click to expand...
Click to collapse
Even with Touch-Disable, fingerprint still unlock the phone. I just tested, covering the sensors and unlocking with fingerprint,but i don't know if inside the pocket it's using some other sensor.
I consider it a bug, but maybe Huawei decided to go this way for other reasons (flip covers maybe?).
DANIELWHITT said:
Have you tried just putting your phone in your pocket screen side out, probably not the greatest idea without a tempered glass screen protector, but thought that may be a funnier answer.
One a more serious answer, isn't that what touch disable mode is used for in smart assistance. To stop random presses or functions when in a pocket or bag, I would assume that uses the proximity sensor to detect its in your pocket, I know my phone vibrates when I put my hand in my pocket and I touch the fingerprint sensor, but it never comes on until its out side the pocket.
Click to expand...
Click to collapse
I literally can't understand **** you're saying, but whatever, it's a bug. Yeah your phone vibrates when it detects a wrong fingerprint, but that's not what I'm asking.
Way to speak to someone offering a reasonable answer, sort it out yourself then bud.
DANIELWHITT said:
Have you tried just putting your phone in your pocket screen side out, probably not the greatest idea without a tempered glass screen protector, but thought that may be a funnier answer.
One a more serious answer, isn't that what touch disable mode is used for in smart assistance. To stop random presses or functions when in a pocket or bag, I would assume that uses the proximity sensor to detect its in your pocket, I know my phone vibrates when I put my hand in my pocket and I touch the fingerprint sensor, but it never comes on until its out side the pocket.
Click to expand...
Click to collapse
I tried n it unlocked even this feature turn on - is a bug.
Same issue with regular mate 10. Screen gets unlocked while the fingerprint gets activated in pocket even with the smart settings on. May be update will fix it
0rigin said:
Well, you read it. It's not a feature, it's a bug.
I like to keep my hands in my pockets because of reasons, and since this phones fingerprint sensor is so sensitive(well, good, actually), I'm constantly unlocking it, while in my pocket. Any solution to this? And no, I won't change my lock style, because this one is the fastest and most useful all around.
Click to expand...
Click to collapse
erichkooi said:
I tried n it unlocked even this feature turn on - is a bug.
Click to expand...
Click to collapse
vaas2000 said:
Same issue with regular mate 10. Screen gets unlocked while the fingerprint gets activated in pocket even with the smart settings on. May be update will fix it
Click to expand...
Click to collapse
Unless I use my thumbprint I set up the screen won't turn on.
If the screen is on but not yet unlocked, it says unblock phone to unlock.
I'm thinking it's working pretty well since the screen won't come on draining the battery without my print. Also assuming more battery savings are made by keeping the sensor asleep when the screen is off? Just a thought.

Screen Unlock in Direct Sun

It was about a couple hours after high-noon and the sun was about 45° above the horizon. I noticed that if you hold your device with the top edge facing the sun, the screen unlock doesn't work.
It just happened to be, I was holding my device at the normal angle I hold it at, and I was facing the sun and I couldn't unlock my phone using my fingerprint unless I faced the device's screen towards me; It would give me "The screen is dirty" error otherwise.
If anyone else would like to try and replicate this and see if it happens to them too.
I think the problem must be the sun is reflecting at a weird angle on the screen or passing under your finger print under the glass and it messes with the sensor.
Update:
I just remembered it was at an angle where you could actually see the hole in the screen where the fingerprint sensor can see
bigmikey307 said:
It was about a couple hours after high-noon and the sun was about 45° above the horizon. I noticed that if you hold your device with the top edge facing the sun, the screen unlock doesn't work.
It just happened to be, I was holding my device at the normal angle I hold it at, and I was facing the sun and I couldn't unlock my phone using my fingerprint unless I faced the device's screen towards me; It would give me "The screen is dirty" error otherwise.
If anyone else would like to try and replicate this and see if it happens to them too.
I think the problem must be the sun is reflecting at a weird angle on the screen or passing under your finger print under the glass and it messes with the sensor.
Update:
I just remembered it was at an angle where you could actually see the hole in the screen where the fingerprint sensor can see
Click to expand...
Click to collapse
Hmmm...will try at the earliest..
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The fingerprint scanner is type of camera that captures and compares images, so I'll go out on a limb and say it most likely didn't work due to too much light hitting the sensor preventing a clear image from being visible, so for security purposes, it couldn't verify your fingerprint, which I'd rather knowing that it works well than it taking a crappy scan of my fp and passing it off as okay.
Dark Nightmare said:
The fingerprint scanner is type of camera that captures and compares images, so I'll go out on a limb and say it most likely didn't work due to too much light hitting the sensor preventing a clear image from being visible, so for security purposes, it couldn't verify your fingerprint, which I'd rather knowing that it works well than it taking a crappy scan of my fp and passing it off as okay.
Click to expand...
Click to collapse
This!

How Does Proximity Sensor Work?

Does the oneplus 7 pro have a physical proximity sensor?
Tomorrow (i don't know why), my proximity sensor stop working, so i was unable to unlock my phone using double tap to wake. I rebooted my phone and it has started to work again. Dwelling on the values ​​that the proximity sensor took, I noticed that there were only 2 visible values: 5.0cm and 0.0 cm. Checking better I noticed that the 5.0cm value didn't change even though I completely covered the phone (I tried to put it under a pillow). After some tests I realized that it took the value of 0.0cm only in 3 cases:
1) when the phone was turned upside down with the screen down and the light sensor recognized values ​​below 10 lux more or less
2) when the phone is tilted as if you were making a call and the light sensor recognized values ​​below 10 lux more or less
3) when the phone is tilted or upside down like it's in your pocket and the light sensor recognized values ​​below 10 lux more or less
Then i checked a bit more and I haven't found the pocket mode that's on the previous devices
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Checking better the sensors names with CPU-Z, i saw a lot of sensor called Non-Wakeup
So in my opionion there is not a physical proximity sensor but it is only emulated and the values ​​change only when the rotation vector (and others Non-wakeup sensors) and the brightness sensor have certain values.
To check better all of this i used Waveup app, it allow you to lock your phone using proximity sensor.
Check and let me know.
There's an ir proximity sensor below the screen. It's located on the left of the 4th quick setting tile icon.
OP also uses the top ear speaker as an ultrasonic proximity sensor as well.
You may need to go into the engineering mode and recalibrate the proximity sensor to fix your problem. I believe there is another threat Don this exact issue.
yandreev3 said:
There's an ir proximity sensor below the screen. It's located on the left of the 4th quick setting tile icon.
OP also uses the top ear speaker as an ultrasonic proximity sensor as well.
You may need to go into the engineering mode and recalibrate the proximity sensor to fix your problem. I believe there is another threat Don this exact issue.
Click to expand...
Click to collapse
What do you mean with engineering mode? I wanted to write here also for this.
mauronofrio said:
What do you mean with engineering mode? I wanted to write here also for this.
Click to expand...
Click to collapse
maybe he is referring to:
https://forum.xda-developers.com/oneplus-7-pro/how-to/guide-fix-double-tap-to-wake-t3933504
Lock the screen and look at it through another phones camera. You will see it...
So i checked, there is an infrared proximity sensor, and it works good in oneplus engineering mode, but i checked also that is not used for these things, try to check by yourself.
The infrared proximity sensor is under the display, check this photo:
Using CPU-Z try this: pick up the phone as if you were going to use it to surf the internet, try to cover the proximity sensor, you will see that the proximity value doesn't change.
I want to say i already calibrated and tested the infrared proximity sensor
mauronofrio said:
So i checked, there is an infrared proximity sensor, and it works good in oneplus engineering mode, but i checked also that is not used for these things, try to check by yourself.
The infrared proximity sensor is under the display, check this photo:
Using CPU-Z try this: pick up the phone as if you were going to use it to surf the internet, try to cover the proximity sensor, you will see that the proximity value doesn't change.
I want to say i already calibrated and tested the infrared proximity sensor
Click to expand...
Click to collapse
Can you also post what you see in CPU-Z? I can't see any IR proximity sensor through another camera, and there's nothing under the IR proximity in my CPU-Z.
rootSU said:
Can you also post what you see in CPU-Z? I can't see any IR proximity sensor through another camera, and there's nothing under the IR proximity in my CPU-Z. View attachment 4775514
Click to expand...
Click to collapse
I'm checking the "Proximity" values, sometimes is disabled, if you move a bit the phone it starts working
mauronofrio said:
I'm checking the "Proximity" values, sometimes is disabled, if you move a bit the phone it starts working
Click to expand...
Click to collapse
I have tried shaking, moving, covering the phone while on this screen, and I don't see any value under infrared_proximity, it's always blank.
Does your CPU-Z shows any value under the Infrared_proximity?
rootSU said:
I have tried shaking, moving, covering the phone while on this screen, and I don't see any value under infrared_proximity, it's always blank.
Does your CPU-Z shows any value under the Infrared_proximity?
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Click to collapse
I wrote proximity, not infrared_proximity.
mauronofrio said:
I wrote proximity, not infrared_proximity.
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oh, I see what you mean. It's 0cm and 5cm in the cases that you mentioned in the OP.
But shouldn't the Infrared_Proximity show something if this has a Infrared Proximity sensor?
rootSU said:
oh, I see what you mean. It's 0cm and 5cm in the cases that you mentioned in the OP.
But shouldn't the Infrared_Proximity show something if this has a Infrared Proximity sensor?
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I don't think infrared proximity is enabled when the screen is on, all times i did the infrared test in the negineering mode a little yellow light appeared in the infreared proximity sensor, so i think it can be used only in some special moments
mauronofrio said:
I don't think infrared proximity is enabled when the screen is on, all times i did the infrared test in the negineering mode a little yellow light appeared in the infreared proximity sensor, so i think it can be used only in some special moments
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What you mean with special moments? It works in the same moments as any other phone..
When the screen is off, when you call someone...
matze19999 said:
What you mean with special moments? It works in the same moments as any other phone..
When the screen is off, when you call someone...
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When the screen is off maybe, when you call no, i already explained this in the first post.
Infrared proximity sensor works only in some moments, usually when the screen is off, when the screen is on, the infrared proximity sensor is disabled and you can check it with CPU-Z, when a sensor is disabled no values are shown
mauronofrio said:
When the screen is off maybe, when you call no, i already explained this in the first post.
Infrared proximity sensor works only in some moments, usually when the screen is off, when the screen is on, the infrared proximity sensor is disabled and you can check it with CPU-Z, when a sensor is disabled no values are shown
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But I dont get it the problem
While youre calling, the screen is off when its dark ( lux sensor ), the gyrosensor registers specific values and maybe some other tricks... But it works like a charm
matze19999 said:
But I dont get it the problem
While youre calling, the screen is off when its dark ( lux sensor ), the gyrosensor registers specific values and maybe some other tricks... But it works like a charm
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Oh yes, there are not a big problem, except for pocket mode.
In all cases I am not reporting a bug or some error, I'm just trying to understand together with the community how the proximity sensor works.
https://www.ellipticlabs.com/2019/0...eaner-design-to-oneplus-7-series-smartphones/
Maybe one reason.
Sent from my GM1913 using Tapatalk
mauronofrio said:
Oh yes, there are not a big problem, except for pocket mode.
In all cases I am not reporting a bug or some error, I'm just trying to understand together with the community how the proximity sensor works.
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Click to collapse
Maybe you will be interested by what I wrote in post #4, #7 and #9 of this following thread :
https://forum.xda-developers.com/oneplus-7-pro/themes/proximity-sensor-issue-op7p-t3937147
I'm also trying to figure how proximity sensors work and I'm pretty sure of that :
Screen Off : IR proximity Sensor
Screen On : Ultrasonic Sensor
With the ultrasonic sensor, only skin is detected, so you can't trigger it with a flip cover, but it will detect your cheek/ear when you're on call.
D4FR3NCH said:
Maybe you will be interested by what I wrote in post #4, #7 and #9 of this following thread :
https://forum.xda-developers.com/oneplus-7-pro/themes/proximity-sensor-issue-op7p-t3937147
I'm also trying to figure how proximity sensors work and I'm pretty sure of that :
Screen Off : IR proximity Sensor
Screen On : Ultrasonic Sensor
With the ultrasonic sensor, only skin is detected, so you can't trigger it with a flip cover, but it will detect your cheek/ear when you're on call.
Click to expand...
Click to collapse
I didn't say that thread, i don't know how the ultrasonic sensor works, but i'm able to trigger the proximity sensor with what i want if i'm in one of the position wrote in the first post
D4FR3NCH said:
Maybe you will be interested by what I wrote in post #4, #7 and #9 of this following thread :
https://forum.xda-developers.com/oneplus-7-pro/themes/proximity-sensor-issue-op7p-t3937147
I'm also trying to figure how proximity sensors work and I'm pretty sure of that :
Screen Off : IR proximity Sensor
Screen On : Ultrasonic Sensor
With the ultrasonic sensor, only skin is detected, so you can't trigger it with a flip cover, but it will detect your cheek/ear when you're on call.
Click to expand...
Click to collapse
If that's true, then I think ultrasonic is doing a pretty bad job in detecting the ear.
The phone is big, so I usually switch sides while talking without earphones, the screen doesn't go off most of the times and leads to ghost touches, and sometimes disconnecting the call.

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