Heart rate sensor doesn't work - Sprint Galaxy Note 4 Q&A, Help & Troubleshooting

Hi everybody
My sprint note 4 heart rate sensor doesn't work no light when I put my finger on. Someone could help me. No root, stock ok1. Thanks you

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Proximity Sensor damage from prolonged use?

Hi Guys,
Just wondering what your thoughts and experiences are on this:
If I use the Quick Glance Motion mode in the N2... I believe constantly keeps the proximity sensor fired up.
Can this continuous and prolonged use damage the Proximity sensor? I bought my phone outright from CL... so I am not quite covered for replacement with Sprint if that happens, so I wanna be safe than sorry... thanks!
Well, I've not heard of this happening, however there are two parts to the sensor.
There is an IR emitter which is a simple IR LED like you'd find in the front of a remote control. You can verify this is working by looking at the face of your Note 2 with another CMOS based camera such as those on another cell phone. The 1st hole to the right of the speaker at the top of the phone is the IR emitter. You may be able to see a faint red glow from it as well when it's active.
The other sensor isn't as easy to test, the IR receiver which is the 2nd hole to the right of the speaker. One option is to use the built in test mode by going to your dialpad and entering *#7353#
After that its option 11 I believe for the prox sensor test. It's fairly simple to use.
In the end, proximity is a very simple IR light and receiver. nothing fancy to it. It's not out of the realm of possibility, but out of the things that could break on the phone those would be my last guesses.
Good luck!
aramova said:
Well, I've not heard of this happening, however there are two parts to the sensor.
There is an IR emitter which is a simple IR LED like you'd find in the front of a remote control. You can verify this is working by looking at the face of your Note 2 with another CMOS based camera such as those on another cell phone. The 1st hole to the right of the speaker at the top of the phone is the IR emitter. You may be able to see a faint red glow from it as well when it's active.
The other sensor isn't as easy to test, the IR receiver which is the 2nd hole to the right of the speaker. One option is to use the built in test mode by going to your dialpad and entering *#7353#
After that its option 11 I believe for the prox sensor test. It's fairly simple to use.
In the end, proximity is a very simple IR light and receiver. nothing fancy to it. It's not out of the realm of possibility, but out of the things that could break on the phone those would be my last guesses.
Good luck!
Click to expand...
Click to collapse
Thank you aramova, for walking me through this stuff. I have to admit, I have never hear of this sensor going bad due to continuous and prolonged use, but something about the sensor staying red/orange in color, all the time made me think... something could go bad here... guess not, since no one reported this ever...
If anyone else has something different to report here, please share guys... Thank you!
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Easy FIX!!!!!
I took a can of compressed air and blew it through the top earpiece grill a few times and Voila, it works great now!!
I actually used a Old perfume can which perfume was over and it was only pressing Gas OFF!!

[Q] Utilising the G3 Laser Autofocus Sensor for Other Apps

I don't know if anyone knows of a way, or not as the case may be, to access the laser autofocus sensor for use in developing an app.
I'm personally assuming that the sensor records distance data in order to change the focus of the camera. I want to be able to access that distance data for use in a Range Finder app. Any help in this would be greatly appreciated! And if this isn't in the right forum, do let me know
+1
Sent from my VS985 4G using XDA Premium 4 mobile app
+1
Would love to see this!
contraryrhombus said:
I don't know if anyone knows of a way, or not as the case may be, to access the laser autofocus sensor for use in developing an app.
I'm personally assuming that the sensor records distance data in order to change the focus of the camera. I want to be able to access that distance data for use in a Range Finder app. Any help in this would be greatly appreciated! And if this isn't in the right forum, do let me know
Click to expand...
Click to collapse
+1
PS: I tried the autofocus laser...
and i find it really strange...
The first time i tried it without covering the laser sensor, and i got a fast and precise focus.
Then the second time i tried to cover (with a finger) the autofocus sensor and i still got a fast and precise focus...
(the test was done on a low light ambient)
Can someone explain this?
Sent from from my LG-D855
EpicChineseTime said:
+1
PS: I tried the autofocus laser...
and i find it really strange...
The first time i tried it without covering the laser sensor, and i got a fast and precise focus.
Then the second time i tried to cover (with a finger) the autofocus sensor and i still got a fast and precise focus...
(the test was done on a low light ambient)
Can someone explain this?
Sent from from my LG-D855
Click to expand...
Click to collapse
The camera falls back on software in situations where the laser can't get an accurate reading similar to how the S5 and all other phones focus normally. It's possible that our wasn't using the laser for this reason when you tested it even though its on.
Sent from my LG-D850 using XDA Premium 4 mobile app

[Q] Scratches on back vs heart rate monitor

Hi, I've bought used Moto 360 and there are several scratches on back. Doeas anyone know if it will have bad on the operation of heart rate monitor?

Check The Video What is that Laser Light Actived On your LG G7 Frontal Glass

(Check The Video What is that Laser Light Actived On your LG G7 Frontal Glass)
Hello everybody!
I am a person who all the time is looking for how to be more efficient with the battery of your phone I really like to disable GPS and disable the most things you can do and I just bought this LG G7 ThinkYou and I just realize that there is a laser invisible light powered on all the time on your frontal glass of your LGg7 check the video please:
note: THIS LASER LIGHT IS ONLY NOTICIABLE WHEN YOU SEE IT THROUGHT A CAMERA
VIDEO (YOUTUBE): watch?v=HAWa7vrp0Bk
And as you know I am caring if would that consume my battery and how to disable it (1), would that damage my eye vision (2), maybe it will finish life time soon because its all time on (3), what is that used for (4) my others mobiles don't have that (Galaxy Nexus, Sony Z5).
Sandro
sandronejm said:
(Check The Video What is that Laser Light Actived On your LG G7 Frontal Glass)
Hello everybody!
I am a person who all the time is looking for how to be more efficient with the battery of your phone I really like to disable GPS and disable the most things you can do and I just bought this LG G7 ThinkYou and I just realize that there is a laser invisible light powered on all the time on your frontal glass of your LGg7 check the video please:
note: THIS LASER LIGHT IS ONLY NOTICIABLE WHEN YOU SEE IT THROUGHT A CAMERA
VIDEO (YOUTUBE): watch?v=HAWa7vrp0Bk
And as you know I am caring if would that consume my battery and how to disable it (1), would that damage my eye vision (2), maybe it will finish life time soon because its all time on (3), what is that used for (4) my others mobiles don't have that (Galaxy Nexus, Sony Z5).
Sandro
Click to expand...
Click to collapse
That should be the proximity sensor that checks if the phone is in a pocket so I can't disable the screen off gestures.
Yes, it's a proximity sensor, and it's important against unwanted control and activation of the display during calls or if is in pocket. It's an IR LED that detect the distance to +-5cm. Battery consumption is basically zero. About 10mA thanks to IR. And lifetime is hundreds thousand hours.
On a similar principle works TV control remote (you can see light with camera too if you press button) so it's safe to live.
https://www.youtube.com/watch?v=RO1P8jGYU78 more info about proximity.
Oh, I see. When it is in my pocket it should keep unlocked right? Currently I did disable this resource and it keeps flashing for what kind of proximity reason?
Hey I think its about the frontal camera maybe?
Yeah it is similar to the remote control of my TV launching laser when I press a button.
I notice when the back camera is recording also there is a laser light on the back glass.
No, its should be locked. Simple test: cover sensor with finger and do knock knock wake up. Display must stay off.
Laser on Back side Is focus for camera.

Flashing white pixel near camera

I just got this phone a few days ago and I noticed sometimes when I unlock the phone there's a flashing circle of pixels near the camera.
Is this normal or did I get a defective device?
This only happens when I unlock the phone and not all the time. Maybe happens 3 out of 5 times. It still bothers me tho.
On the note 10 I saw there was the same flashing circle and they claim its the proximity sensor. If it is a proximity sensor, is there anyway to stop it from lighting up?
PS: I couldn't upload the video so I attached a screenshot from the video
I have the same on s20+5g exynos but only when I make call.
Tapatalk - SM-G986B
Proximity sensor as well??
I think so
Enviado desde mi SM-G988B mediante Tapatalk
This is the proximity sensor and it is active during phone calls and unlocking.
I noticed this on the first day I took delivery of my s20+.
Dont panic. It's just the proximity sensor.
You can test this by making a phone call, that place will start to blink. Cover it with a finger, you'll see the screen going blank.
I learned this from the note 10 community. It's present on the note 10 as well.
Sent from my SM-G985F using Tapatalk
Its the proximity sensor. WHen on a call, pop your finger over it and watch your display turn off

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