Develop Bugs

[Q] Proximity sensor calibration

I am having an issue with my proximity sensor and believe it may be some sort of calibration issue. It works (ie when I am in calls, if I cover it with my finger, it shuts off the screen) but the sensitivity has become very poor. I've had the phone since the day it was released and the proximity sensor had no trouble reflecting off my head and keeping the screen off during calls. Over the last few months I've noticed I started hitting buttons with my ear during calls because the screen is not shutting down. It seems like the sensitivity has decreased by some fixed amount in the last few months. It is very annoying because I keep accidentally hanging up on people or hitting the hold call button while I am talking.
The only two things I thought it could be would be either the sensor needs to be calibrated or possibly the sensor is going bad. I'm running the cyanogen 7 nightlies but have also tried reverting to some of the more stable RCs and still had the issue. I will try going back to a t-mobile rom tonight to see if that helps.
Has anyone else experienced this? Or does anyone know how to re-calibrate the sensor?

z test from market calibrates (im pretty sure)

smokeuout said:
z test from market calibrates (im pretty sure)
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I gave it a shot, but I didn't see anything for calibrating the proxy sensor in that app.
I did however do a test using the camera on my transformer and compared the intensity of the proxy sensor LED to that on other phones. It appears as if mine is very dim and barely blinks. I think the infrared LED is burning out or the circuit that supplies it is not putting out the correct power.
Has anyone ever tried replacing a bad proxy LED before?

try sucking over the surface with a vaccum...i know it sounds crazy but its fixed alot of proxy sensors

smokeuout said:
try sucking over the surface with a vaccum...i know it sounds crazy but its fixed alot of proxy sensors
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That, or use one of those compressed-air cans for cleaning stuff and blow it into the speaker hole towards the proximity sensor (to the left of the speaker hole.) The proximity sensor seems very sensitive to dust particles.

You haven't installed or changed screen protectors recently, by any chance? Those have been known to mess up the sensor. Also, make sure the protector or glass is nice and clean in the area of the sensor.

Thanks for all the great advice! I'm going to give the vacuum and air can a shot.
Oh and to answer redpoint, I haven't installed any screen protectors on this phone ever, but thanks for the advice.

My GF's Vision behaves the same...
Still looking for a calibration tool, i found only one, but that don't work.
Also tried to "clean" the sensor
I think we have to return it to htc...

Same problem with my DZ since I put Virtuous G Lite on it. Did you guys find a solution for your proximity sensor ?
Cleaning or software ?

cri-cri16 said:
Same problem with my DZ since I put Virtuous G Lite on it. Did you guys find a solution for your proximity sensor ?
Cleaning or software ?
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I am having the same problem. I keep hitting the hold button. Any fixes?

Front facing Camera fails

hey guys
since yesterday, my nt's front camera fails in original camera app and all third partys apps.
i tried changing the rom and also hard reset
seems to be a hardware issue. but it really sucks. because there were not any damage to the phones body or voltage imbalance or...
any idea?
thanks

pooyab said:
hey guys
since yesterday, my nt's front camera fails in original camera app and all third partys apps.
i tried changing the rom and also hard reset
seems to be a hardware issue. but it really sucks. because there were not any damage to the phones body or voltage imbalance or...
any idea?
thanks
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Seems youve done your part time to take it for service

Galaxy note 3 proximity sensor issue Fix (when making calls)

Hello!
A month ago I had an issue when all of a sudden, when I was on a phone call and separated my Note 3 from my ear (to check the time as an ex,), the screen would stay black and the proximity sensor wouldn't work. It was very annoying (to me anyways) as I believe in having a phone working 100%. Honestly...I thought it was ROM and/or kernel related, but it's not. Doing some research here in XDA, I found several members of this community (Sprint Note 3 to be specific) experiencing the same issue. Apparently, it's dust affecting the proximity sensor making it unresponsive.
Long story short, one member said that he fixed his Note 3 by blowing air into the earpiece where the sensor is located. I thought the worse about the guy (lol) thinking it was a crazy idea...BUT, I said, "WTH...let me try it" and sure enough, it FREAKING worked!!! My Note 3 was working properly again!
That very same day, on Google +, I came across this article http://www.infotales.com/samsung-galaxy-note-3-proximity-sensor-issue-fix where the author "YASIR MIRZA" wrote an AWESOME article with this particular issue. He goes real deep into the subject and has 2 different methods more in depth about fixing the issue.
I will NOT maintain this thread since I don't have time. I'm only posting this here because I think it's the right place "Q&A", plus maybe if someone has the issue (like I had), by doing SEARCH (like I did), this thread will pop up and maybe help!!!
READING IT'S FUNDAMENTAL... SO READ FROM THE LINK I'VE PROVIDED WHERE IT HAS MUCH MUCH MUCH USEFUL INFORMATION!
HIT THAT "THANK YOU" BUTTON IF I HELPED OR YOU FIND THIS USEFUL!!! IT DOESN'T BITE...lol

That is a really good and thorough article. While I have not had any proximity sensor issues (yet), people who have will certainly appreciate the how-to. It is for a rooted device, though.

This is all great info, but it doesn't address the core issue which I gather from reading, is dust obscuring the sensor. I'm assuming this will recalibrate the sensor partly covered by dust, but If the dust got on the sensor once, there is pretty good chance it will get there again and change calibration? So how to stop it from getting there in the first place would be my concern, especially because so far my sensor works fine. Maybe solution should be to seal headphone jack, (if that's the culprit) which personally I rarely use, with some rubber insert, easy to remove if needed? And there is another opening (microphone?) right next to it, could that be a way inside as well?

As my phone's not rooted, nor have any compressed air handy, I opted to physically clean the sensor.
It's pretty simple and straightforward (the teardown videos are on youtube). Basically, you just unscrew the back casing and remove the sensor. Then either wipe the sensor window or use a tape to stick up the dust.
Before cleaning my readings were 105 and not working. After cleaning it went down to 40 and has been working ever since. Blowing the dust may simply dislodge it moved it around, having a chance of it finding its way back whereas cleaning it removes it altogether until some new dust finds its way back onto the window.

mwerkz said:
As my phone's not rooted, nor have any compressed air handy, I opted to physically clean the sensor.
It's pretty simple and straightforward (the teardown videos are on youtube). Basically, you just unscrew the back casing and remove the sensor. Then either wipe the sensor window or use a tape to stick up the dust.
Before cleaning my readings were 105 and not working. After cleaning it went down to 40 and has been working ever since. Blowing the dust may simply dislodge it moved it around, having a chance of it finding its way back whereas cleaning it removes it altogether until some new dust finds its way back onto the window.
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I just fixed my proximity sensor problem by doing a tear down and cleaning the dust out from the screen in front of the sensor also. Fairly easy to do.

i9100 proximity sensor doesn't work
Hi to all!
I have the issue with proximity sensor and didn't manage to find a solution in other similar threads!
The matter is that it is always stay as Released.
In the same time in test screen (*#0*#) there are changing reading for PROXIMITY parameter from 2 up to 240 with no ADC parameter at all. Please look for screenshots. PROXIMITY parameter changes its value when I move my finger in front of the sensor, but as I can understand Android doesn't recognize it because of ADC absence.
Moreover I tried to change proximity sensor for working one (from another phone), but it shows the same as mine (with no ADC readings).
After all I think it is software problem, but I don't know how to solve it. I flashed different firmwares (now it is XWMSE NeatROM v.6.4), but nothing helped.
Please assist! Thanks!

Hands-free mode
Hi everyone, just disabled the hands-free mode (steering wheel symbol - from the upper curtain) and your problem is solved.
Cheers.
God bless. :laugh:

The link in the OP does not work; am I missing anything - like a period or some other punctuation or some word(s)?

No Gyroscope, No Proximity Sensor, No Temp...
I have a SM-N900 Showing no values for any sensor, I have tried unplugging and replugging proximity sensor with no sucess, also tried restoring via Odin Stock firmware, no sucess.
The Phone was apparently working fine, without root on stock lollipop, and after resetting the device for selling it, it stopped working.
I can't even rotate the screen...
I also tried the calibration method with no sucess...any suggestions?

Same here!!
It is so frustrating. I've restored to stock, with Odin. Had 3 different roms and have never had my sensors working. I've tried
libgnustl_shared-1.so fix for rotation. It didn't work.
Does anyone have any ideas? I don't have water damage.

I solved my problem by installing google phone app and selecting this phone app as system default from app permissions menu.

Knock On Not working properly

Hi, everyone. So I have an LG G4 for more than a year now and I am very pleased with its performance. I did have an issue with sometimes the audio is stuck after a call but I think it more has to do with bad reception as I noticed so its rare this days. However, lately something happened with the knock on feature which I cannot figure out at all. Sometimes it just doesn't work. I tap and nothing happens. The power on button is working perfectly but the knock on is unresponsive. I fiddled with the proximity sensor but it's not it. Sometimes it just stops working for 5-6 times and then it works and the again it doesn't. There is no pattern. When it's powering on the feature works with no hiccups but after that it's like the cpu forgets to monitor the process. I don't know. I have tried calibration and it works with no problem for a few minutes and then it goes back again to this stutter. Does anyone have any ideas about this? I am thinking factory reset but the hassle would be pointless if the problem persists and I am in no mood to install all those apps I have from the beginning for no reason. Any hep will be really appreciated. Thanks in advance.

I am experiencing the same issue but mine Knock on is a bit delaying.. for an example, I double tap on the screen and it gives response in 3-4 mins or not... I am suspecting from screen protector which has been mounted for almost a year, it could be corrupted(scratch) Give a try on removing the screen protector(if you have any)

It's a hardware problem. Many threads online about it
Sent from my LG-H811 using Tapatalk

Nailen said:
Hi, everyone. So I have an LG G4 for more than a year now and I am very pleased with its performance. I did have an issue with sometimes the audio is stuck after a call but I think it more has to do with bad reception as I noticed so its rare this days. However, lately something happened with the knock on feature which I cannot figure out at all. Sometimes it just doesn't work. I tap and nothing happens. The power on button is working perfectly but the knock on is unresponsive. I fiddled with the proximity sensor but it's not it. Sometimes it just stops working for 5-6 times and then it works and the again it doesn't. There is no pattern. When it's powering on the feature works with no hiccups but after that it's like the cpu forgets to monitor the process. I don't know. I have tried calibration and it works with no problem for a few minutes and then it goes back again to this stutter. Does anyone have any ideas about this? I am thinking factory reset but the hassle would be pointless if the problem persists and I am in no mood to install all those apps I have from the beginning for no reason. Any hep will be really appreciated. Thanks in advance.
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Is your case or temp glass protect over prox sensor. That can affect it bad. Also scratches on glass over prox sensor. If not. Then more than likely hardware related.

No the screen protector does not cover the prox sensor. It's cut out as it should be. I am starting to think it's a hardware problem. The thing is why now?!

Nailen said:
No the screen protector does not cover the prox sensor. It's cut out as it should be. I am starting to think it's a hardware problem. The thing is why now?!
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They are mostly sensors just like on a car. Sometimes it's just there time. Electrical components fail all the time. Are u rooted. Modified anything recently?

TheMadScientist420 said:
They are mostly sensors just like on a car. Sometimes it's just there time. Electrical components fail all the time. Are u rooted. Modified anything recently?
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No. I haven't touched it at all yet. I am pretty satisfied with the performance so I left it alone. The only thing worth mentioning is that I overheated taking a lot of pictures during an event. Maybe this did a number on it!

I have been discussing the issue with a technican today. It is a hardware issue, you cannot fix it. Apparently, the proximity sensor dies after ~2 years - at least somewhat. Why somewhat?
Check this out: You can check the status of your sensor using MINIOS, type *#546368#*815# (n.b. - swap 815 for your model number).
Now click device test - MT - ok - Individual Item - Sensor test - WAIT!
The proximity sensor will run a test and likely come up with a figure between 60~90. The actual value should be 220+.
Meaning: Your phone thinks it´s ~6-9 cm away from your face, that is not enough to trigger knock-on but it´s far enough to be triggered using the backside button.

My knock on doesn't work, but knock off does. Not a major issue, just annoying!

Question Any software solution to proximity sensor failure on calls?

Hello,
Before buying the Poco F3 I've never had a phone with this system without a proximity sensor, and the truth is that after using the phone for two weeks I'm sick of it. I'm even thinking of selling the phone.
Due to the fact that the problem is related to the lack of appropriate hardware, I think that a possible solution for phone calls could be that the screen would automatically lock when answering calls, and then to manipulate the screen again it would be necessary to unlock a via a slider, pattern, fingerprint, or facial recognition.
Do you know any solution or calling app that allows to do something about this? Root wouldn't be a problem.
Thank you.

I tried the recalibration but did not work. Also I am using a new tempered glass screen protector but no luck. It would be interesting to hear from someone who is using a custom ROM if the problem is solved there

you want poco f3 to go screensaver mode/ blackscreen when your calling/talking to someone?

Unfortunately, they have to use palm rejection in conjunction with the camera to get it to work but it will never be as good... I know that feeling bro... hate how when listening to audios on Instagram or whatsapp this **** doesn't even work at all

I checked the proximity sensor test in CIT and it is very inconsistent for me too. I guess this device has an ultrasonic proximity sensor instead of the infrared sensor that is generally used, and it hasn't been calibrated correctly. Maybe future updates could fix it hopefully

i use this app name "proximity service" when you cover the proximity sensor near front camera the screen would turn off while the running apps does not get shutdown i use it to stream call of duty without my phone screen running so phone don't get overheat

so is the proximity sensor actually broken on everyones device. what the hell something as simple as that they messed up.

sam00561 said:
so is the proximity sensor actually broken on everyones device. what the hell something as simple as that they messed up.
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provably intentional they sacrifice some hardware to fit its price range this explain why the phone cost $200 on some country while other have it at $400
business my friend lol

ineedroot69 said:
provably intentional they sacrifice some hardware to fit its price range this explain why the phone cost $200 on some country while other have it at $400
business my friend lol
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I think proximity sensor is an essential part of a phone during they haven't left it out. Must be software bug.

As far I know, this phone don't have any proximity sensor, I guess that this is because design reasons, don't think that the proximity sensor hardware cost more thant cents. The phone uses an ultrasonic "sensor" combined with the gyroscope, because of that, the sensor only works (when it works) with the phone in vertical.
For Whatsapp, instagram or other audios I don't think there is a solution for this, even with future updates, since the main problem is the lack of hardware and isn't possible to modify the apps.
I thought that a "solution" for phone calls could be that if when answering calls the touchscreen locks automatically (even if the sensor malfunctions and don't turn off the screen), and for unlock a slider on screen or something similar was necessary, could be a solution for misstouching the touchscreen with the face. Even using screensaver mode/blackscreen for this purpose could be a solution, but I can't figure out if this is possible with some other third party telephone app.

Are proximity sensors needed?
I am thinking about buying this phone, but this concerns me.

CoolGuyOnTheInternet said:
Are proximity sensors needed?
I am thinking about buying this phone, but this concerns me.
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I already bought it and found out about this sensor issue after purchase the phone is on its way and i am kind of regretting the purchase because sensor is quite important so that the screen can go off when the phone is near your ear and also for some reason when playing voice note on whats app people are saying the screen turns off and doesnt come back on which is a huge flaw in my opinion. I cant think how this could possibly be fixed without the option of a physical IR proximity sensor.

sam00561 said:
I already bought it and found out about this sensor issue after purchase the phone is on its way and i am kind of regretting the purchase because sensor is quite important so that the screen can go off when the phone is near your ear and also for some reason when playing voice note on whats app people are saying the screen turns off and doesnt come back on which is a huge flaw in my opinion. I cant think how this could possibly be fixed without the option of a physical IR proximity sensor.
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Dang, I wonder if software can fix it?

CoolGuyOnTheInternet said:
Dang, I wonder if software ca
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CoolGuyOnTheInternet said:
Dang, I wonder if software can fix it?
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i really need to know this too. Have you got the phone yet

sam00561 said:
i really need to know this too. Have you got the phone yet
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No, I have not ordered it yes since I am in Canada.

CoolGuyOnTheInternet said:
No, I have not ordered it yes since I am in Canada.
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Ok maybe Hold off a while until more is known

I am also experiencing this same issue. Due to this, I had sold my previous device Mi 11Lite to a friend of mine since he isn't bothered about the issue. Now in Poco F3, I am facing this issue. Sometimes it gets off and sometimes it doesn't. Initially, I first experience this issue in Redmi Note 9S but then the same issue arises in Mi 11 Lite. But in Poco F3 it does more frequently then my previous devices.
I think it's due to wired location of the proximity sensor which controls it in these thin bezels devices since the earphone grill is too small. Its driver or software should be tweaked by developers or Xiaomi in sort of patch or update.
If there is any fix or workaround for this then kindly share since it's very annoying especially listening to WhatsApp messages is a pain in the ass.

Also my f3 when I make a call and phone is upright and my face is facing it then the screen goes off. This does not happen when the phone is lying down

sam00561 said:
Also my f3 when I make a call and phone is upright and my face is facing it then the screen goes off. This does not happen when the phone is lying down
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i thought that what supposed to happen? also forcing your proximity sensor to "always run" and detect if your phone put down on table lying down and turn off screen would eat more battery

ineedroot69 said:
i thought that what supposed to happen? also forcing your proximity sensor to "always run" and detect if your phone put down on table lying down and turn off screen would eat more battery
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Yes, for example when you're lying on the bed or the couch and want to attend phone calls and hear whatsapp audios.