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Dim red light next to proximity sensor

Hi,
I just saw today, that there was a very weak red light just next to the proximity and light sensor. It looked like it was flickering at a very high rate!
I tried to restart the phone normally, but the light didn't disappear. After that I tried a reset by holding the power button down for 10 seconds. That made it vanish.
What the f**k was that all about???
Best regards
Casper

If you were making a phone call, the red flashing light is normal It's the proximity sensor. If you were doing nothing, it should not be seen the red light, might be faulty.
Sent from my HTC One S using XDA

Moved To Q&A​
This is best in the Q&A section, as it been written as a question.​

h.han said:
If you were making a phone call, the red flashing light is normal It's the proximity sensor. If you were doing nothing, it should not be seen the red light, might be faulty.
Sent from my HTC One S using XDA
Click to expand...
Click to collapse
Its The Goverment Spyin On us...Making Sure We Dont Flash Anything Or Even Root...If So It Will Say Tampered And The S.W.A.T. Team Will Come Crashin in Our Homes...

That red light is in fact the actual proximity sensor and it's in use while in a call. If you where not in a call then that was a strange occurance unless you ran some of these sensor testing apps...

Well, I wasn't in a call. I had been calling someone through the hands-free in my car on my way to work, where I discovered it about 10-15 minutes after the call was finished...

cawith said:
Well, I wasn't in a call. I had been calling someone through the hands-free in my car on my way to work, where I discovered it about 10-15 minutes after the call was finished...
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That was an odd one... maybe it was a temporary fluke? Strnag nonetheless...

I often use face unlock. The red light turns on when the front cam turns on.
Sent from my HTC VLE_U using XDA

any tips on how to trouble shoot this? I wish I could figure out which app (if any) is causing the proximity sensor to stay lit.
I've heard it's related to an autobrightness tweak, but it appears even when tweak is not applied, across multiple roms. The only commonality between my roms is the apps I have installed.
I've tried multiple proximity sensor testing apps and, it's working.. it's just always lit up.

decalex said:
any tips on how to trouble shoot this? I wish I could figure out which app (if any) is causing the proximity sensor to stay lit.
I've heard it's related to an autobrightness tweak, but it appears even when tweak is not applied, across multiple roms. The only commonality between my roms is the apps I have installed.
I've tried multiple proximity sensor testing apps and, it's working.. it's just always lit up.
Click to expand...
Click to collapse
Same here. Have to restart to get it off again. Any help? (TrickDroid 4.3)

Anytime you make a call by any means other than handset to your ear, the proximity sensor will come on and stay lit until reboot or until you make another call via handset.
Example:
Place call> turn on speaker phone> hang up - proximity sensor will stay lit after call;
To fix do this:
Place call from handset (not using speaker phone or hands free) and hang up right away, or reboot device and light will go out.
Same seems to go for calls through hands free as well.

These guys are lying its a bomb isn't it obvious flashing red light HTC controls it if u do something they don't want u to do boom ur hands are no more why do u think the phone heats up so much its a warning don't believe me read the thread in forums about heats in the one s another reason they don't want us to remove back well see the bomb :what:
Sent from my HTC One S using xda premium

Hi All,
My One S also does this. I'm finding it a pain to have to make a call after using speakerphone to turn the proximity sensor off again. Has anyone found out what the cause of this is?
I've tried clearing cache partition with HTC support but still no fix.

Hi all, I forgot to mention that the issue on my phone only happens when the call is ended with speakerphone active. If I turn off the speakerphone before ending the call it does not happen.

Hey brothers.. I had the same problem with the proximity sensor not turning off.. Even after so many restarts resets... Finally I just opened the original task manager of the one x, and push "stop all" .. and YES!! the sensor was turned of and stopped lighting.. After that I tried calls with speaker phone or not.. No problem.. Now it is working how it has to...

Sv3TL10 said:
Hey brothers.. I had the same problem with the proximity sensor not turning off.. Even after so many restarts resets... Finally I just opened the original task manager of the one x, and push "stop all" .. and YES!! the sensor was turned of and stopped lighting.. After that I tried calls with speaker phone or not.. No problem.. Now it is working how it has to...
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Click to collapse
You maybe have turned off Viber doing this: http://www.boards.ie/vbulletin/showthread.php?p=80972874
Does it come back after restarting Viber?

Sometimes a restart fixes the problem.

I had the same problem. I uninstaled Viber and the light disipired.

foner81 said:
You maybe have turned off Viber doing this:
Does it come back after restarting Viber?
Click to expand...
Click to collapse
Later I realized that Viber is the reason. Yes. But now it seems that Viber is fixed after last update, and no red light when viber is turned on

[Q] Any way of turning the LED light off while in gallery and walkman?

As stated in title. It's annoying and I would like to turn it off, I have to clue how though. Anyone else gets annoyed by this "feature"? Let's try to find a solution together

Usually clears up a certain line in build.prop to turn off the LED , I think ..

Switch on stamina mode.......
Sent from my C2104

Flash a ported walkman and gallery that don't have that function enabled?

I have the idol 3 with cricket

My reversible mode works great untill you make a call then the phone rotates it self back to its upright position idk how to solve the issue iv tried everything from setting to developer options i need help

Mine is the same. I believe it was removed with the small update...
Sent from my 6045O using XDA-Developers mobile app

Mine is the same too
Sent from my 6045O using Tapatalk

any solution to this issue?

I'm no developer, but I would imagine it's being forced into "standard" portrait format by the in-call ui. If it's not reverting after the call, I would suggest simply toggling auto-rotate off then back on after the call.

Proximity Sensor Issue OP7P

Guys!
Do you experience proximity sensor issues while answering calls on OP7P?
For me while I'm on calls. The display comes on and gets disturbed and get pressed by my ears all the time.
Also any idea of where the proximity sensor is located on OP7P?
Thanks ?

Yes, I'm having the same issues. While I'm on calls I often activate the notifications pulldown. It would be nice to know how to fix this.

If you pull down the notification shade, the sensor is located just above the fifth icon on the first row. IE behind the screen.
If you pull the shade all the way down it is above and between the third and fourth icons. Easiest way to describe it. Put your thumb over that area with auto brightness on to watch the slider move.
Annoying while on a call that the screen comes on.

I'm experiencing the exact same issue with the caller app.
I also tried to make a flip cover to turn screen on or off with a proximity sensor detection app and it didn't work either.
I search a little in engineer mode (*#808#) and found that there is multiple proximity sensor, the IR sensor work quite well but it doesn't seem to be the default one.
The default one seems to be the ultrasonic sensor which works really bad.
There is also a "TP" proximity sensor which seems to be a near field detection which seems to work if I move my hand near the screen.
The sad thing is that in dedicated app to use or test proximity sensor (and in antutu or else) only one proximity sensor is listed (The ultrasonic one I guess) so you cannot switch to use the one which is working well.

Isn't this in the wrong place? Shouldn't it be in the Questions and Answers section?
Mods?

Probably just here looking for a mod to improve the situation

Actually I was going to open a new thread in Q&A when I found this one with the same subject and problem.
Do you think I need to open a new thread?
Is any of you experiencing the same issue as I described in my answer?

did anyone calibrate the proximity sensor using *#808# first? That seems to fix double tap to wake for some people

I tried to with no luck but as I explain in my first message the IR sensor is only used when screen is off (that's why it could help with double tap to wake)
But when screen is on another or couple another sensors are used and you can't calibrate them.
I think ultrasonic sensor is used when screen is on.
Do someone tested proximity sensor with any app on the play store? (Like proximity sensor test)
Put it on a table and check if it's working, mine is absolutely not. If I hold it like I was about to phone it works a little but it's not impressive.
Since I got 9.5.7 (EU version) earlier this evening screen turn off when I make a call.

I'm having this issue since 9.5.8... It's very annoying and I'm really disappointed, I often turn on airplane mode during a call... I tried to calibrate but it doesn't work.
I'm very very frustrated

schmeggy929 said:
did anyone calibrate the proximity sensor using *#808# first? That seems to fix double tap to wake for some people
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Click to collapse
When I click on proximity test it says it needs calibration how do I do that cause otherwise I can not test my proximity sensor cause when I click on it nothing happens
I am on 9.5.8

dallasnights said:
When I click on proximity test it says it needs calibration how do I do that cause otherwise I can not test my proximity sensor cause when I click on it nothing happens
I am on 9.5.8
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This...

I've been having issues with phone calls but more so with pocket issues.. When I had the 6t pocket mode kept the phone neutral but this phone doesn't seem to have an accurate prox sensor.. Is there a way to activate a pocket mode?
Sent from my [device_name] using XDA-Developers Legacy app

Happening to me too, approached oneplus via live chat about this issue and at one point they said to wipe and reset my phone even if I told them the sensor is working but seems badly calibrated. Will try the wipe & reset and if it's not working I am returning my phone.

Proximity sensor is working fine - there is a bug elsewhere on the firmware that does not lock the screen when it is blacked out

pinzarualex said:
Happening to me too, approached oneplus via live chat about this issue and at one point they said to wipe and reset my phone even if I told them the sensor is working but seems badly calibrated. Will try the wipe & reset and if it's not working I am returning my phone.
Click to expand...
Click to collapse
Let us know if it's going to fix the issue wiping and resetting everything please!!!

Jaco2k said:
Proximity sensor is working fine - there is a bug elsewhere on the firmware that does not lock the screen when it is blacked out
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Click to collapse
But I have had this issue since release.. Do you a link to this information? If that's the case maybe someone can look into the firmware and see if it's minor tweak that can fix it?
Sent from my [device_name] using XDA-Developers Legacy app

Jack_Sparrow_ said:
Let us know if it's going to fix the issue wiping and resetting everything please!!!
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Click to collapse
Of course it didn't fix anything...

Jaco2k said:
Proximity sensor is working fine - there is a bug elsewhere on the firmware that does not lock the screen when it is blacked out
Click to expand...
Click to collapse
This has been an issue since the release. Do you have a link to where you read this information? If it is the firmware maybe someone can look into the settings and see if needs a tweak..
Sent from my [device_name] using XDA-Developers Legacy app

j0hnee said:
This has been an issue since the release. Do you have a link to where you read this information? If it is the firmware maybe someone can look into the settings and see if needs a tweak..
Sent from my [device_name] using XDA-Developers Legacy app
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I have reported this to Funk wizard on the OOS support thread and he said he cannot reproduce it anymore on the latest test build, so... We have to wait for next firmware release and see if that is indeed the case

How to avoid black screen on call?

I have an MI max which for some reason stopped the proximity sensor at 0 and this means I get black screen on every call ( Whatsapp calls in particular ) and I cannot do anything but restart. The phone is rooted and I wish to find a way to use my phone otherwise I have to probably throw it away as the sensor itself cannot be found in my country.
Is there any trick or application which can help me disable or otherwise set the proximity sensor to a number that it doesn't bug me? Or perhaps there is a way to keep the screen at all times even during calls?

Surmise said:
I have an MI max which for some reason stopped the proximity sensor at 0 and this means I get black screen on every call ( Whatsapp calls in particular ) and I cannot do anything but restart. The phone is rooted and I wish to find a way to use my phone otherwise I have to probably throw it away as the sensor itself cannot be found in my country.
Is there any trick or application which can help me disable or otherwise set the proximity sensor to a number that it doesn't bug me? Or perhaps there is a way to keep the screen at all times even during calls?
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Click to collapse
I don't know if it is still around, try the Hardware Disabler app for rooted devices(or any similar app).
Sent from my SM-S767VL using Tapatalk

Droidriven said:
I don't know if it is still around, try the Harware Disablet for rooted device(or any similar app).
Sent from my SM-S767VL using Tapatalk
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Can you please elaborate? Is this an app? I tried a few but couldn't find any that actually work.