Heartbeat sensor activates in idle - Galaxy Note 4 Q&A, Help & Troubleshooting

Hi. I see that the heartbeat sensor lights up with red light whenever something is within ~0.5cm from it, even if the screen is off. It happens when the phone is in my pocket, on the table or if i put my finger near it. Why is that? It dosen't seem to take an actual reading unless i ask s-health to to so...

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[REQ] Idea for Light Sensor

Hey guys,
I don't know if this is possible, but I kinda like how with the BlackBerries you can put the phone in your pouch and it will shut off and it will turn on when you pull it out.
Well, what if we used this concept with the Touch Pro. My idea is that when you get a text message, your phone turns on in your holster right? What if we made it so that the phone stayed off (kinda like how when you get an email), but then it enabled the light sensor so that when you pull it out of your holster, the screen turns on. Then, once you're done reading the text message and you throw the phone back into your holster and it shuts the screen off.
Am I just fantasizing too much or is this actually possible? Let me know what you guys think?
you can allready turn it off, q2 how will you read a message @ night?
There is something like that, it uses the Gsensor and Light sensor. It is actually a locking app called Pocket Shield. when its locked and u pull it out of your pocket or holster the light sensor detects the light and turns on the screen and unlocks. http://pocketshield.netserver01.com/
jutaman said:
There is something like that, it uses the Gsensor and Light sensor. It is actually a locking app called Pocket Shield. when its locked and u pull it out of your pocket or holster the light sensor detects the light and turns on the screen and unlocks. http://pocketshield.netserver01.com/
Click to expand...
Click to collapse
Yeah, but the only way it will unlock it out of the pouch is if the screen is on. Anyway to do it in standby mode? I assume if the screen is on it will drain the battery.
bombzhome said:
Yeah, but the only way it will unlock it out of the pouch is if the screen is on. Anyway to do it in standby mode? I assume if the screen is on it will drain the battery.
Click to expand...
Click to collapse
You can try TouchLockPro. This automatically unlocks using the light sensor. Just press the Power button to make the screen on, it will default be locked, till you or the light sensor unlocks it.

Light Sensor in a dark room issue?

I've noticed something and i'm wondering if anyone else has had this issue.
I was laying in bed with the lights out talking on the phone the past 2 nights. Each time i moved the phone away from my head to put the call on speaker so i could look something up on the phone.. Well when i move it away from my head the screen lights up for a split second then turns off. After a couple seconds it will either flash on/off again or stay on.
It seems like the light sensor is confused and doesn't know if it's against my head or not during the call because the room is so dark. I have the automatic brightness turned off btw.
Has anyone else noticed this?
There is a proximity sensor to know when the phone is against your head, so I guess it could be to do with that too.

what are the indicators?

above the screen at the top left it looks like led's but we all know thats not what they are.
proximity sensor... One thing it does lets say your on a call the screen will go to sleep, when you move the phone from your face it will turn back on... pretty darn cool
The other is a ambient light sensor.

[Q] Ambient light sensor not present?

Just as the title says-
I am not able to locate the light ambient sensor on my A500 tab- My previous A500 got replaced by acer because the speakers were defective in some way-
I have read that the light sensor is located below the volume rocker and rotation switch on the black glass and can be seen under bright light- i tried every way to find it no success.
I tried "proximityscreenoff" and "sensorlist" from the market. Both of the freewares listed an ambient light sensor on my device as -"Lite-on al3000a Ambient Light sensor"-
BOTH THE APPS COULD NOT GET ANY DATA FROM THE SENSORS :O-
DO we even have a sensor? or is it just me without it?
Can someone please use the apps and tell me if any data is being collected from the sensors?
Highly appreciated- thanks you
I tried with Sensor List and it does indeed show up the sensor, but doesn't seem to be getting any data from it. So it's not just your tablet.
Same thing with "AndroSensor", it shows it but no data change in it either. Hopefully we can figure out what the issues is? Are both of you using the factory install rom? Or a rooted one with a tweaked kernel?
sda.171 said:
Just as the title says-
I am not able to locate the light ambient sensor on my A500 tab- My previous A500 got replaced by acer because the speakers were defective in some way-
I have read that the light sensor is located below the volume rocker and rotation switch on the black glass and can be seen under bright light- i tried every way to find it no success.
I tried "proximityscreenoff" and "sensorlist" from the market. Both of the freewares listed an ambient light sensor on my device as -"Lite-on al3000a Ambient Light sensor"-
BOTH THE APPS COULD NOT GET ANY DATA FROM THE SENSORS :O-
DO we even have a sensor? or is it just me without it?
Can someone please use the apps and tell me if any data is being collected from the sensors?
Highly appreciated- thanks you
Click to expand...
Click to collapse
I got Sensorlist and tried it and I do get data from it.
xhz/xxxx or xxxxxms and a red line. The upper limit is 227 and lower limit is -227 and the red checked number changes. It's nowhere as quickscrolling as the other sensors but I get a jagged red line moving across.
okay guyz i think i figured this whole thing out most probably-
I just came back from this electronic store, i closely examined the iconia on display- a500 - noticed the black glass under the volume rocker and rotation lock and THE LIGHT SENSOR WAS THERE! :O - looking like just any ordinary light sensor-
This made me come up to the following conclusions- since i have had another iconia before i returned it for warranty- i was able to identify the following differences-
1st variant-model
Light sensor present
Mic volume low
Volume locker button hard to push
Power button sorta pushed inside
2nd variant model -( the one i currently have)
Light sensor absent? Or hidden under black glass? (Manufacturing defect?)
Loose rotation lock (hardware) toggle
Mic volume high (as in proper)
-(i faced these additional problems)-> glass over the camera came off and the glossy label on the side slipped out.
So if u have the first variant, the one i previously had and the one i examined in the shop today- that should give u data from the light sensor, and the 2nd variant with hidden/absent light sensor won`t.
These are my findings. Feel free to point out and discuss-
What should we do? I m considering a second replacement now -_____-
With AndroSensor app open, try to put some direct light above the sensor and see if it shows some readings. I noticed that the sensor is in a sort of sleep status until it sees some light; after then it kinda wakes up and works properly.
I appear to have what you call the second variant model. I just checked with Androsensor, and the light sensor does appear to be present beneath the black glass, just under the volume up rocker. I agree it does appear to sleep until it senses a light source.
cm0901 said:
With AndroSensor app open, try to put some direct light above the sensor and see if it shows some readings. I noticed that the sensor is in a sort of sleep status until it sees some light; after then it kinda wakes up and works properly.
Click to expand...
Click to collapse
I just downloaded andro sensor-
Under light sensor it sed-waiting for event-
I took my hd2, turned on the flash! Pointed it right above the sensor and no response, it just kept saying waiting for event- so does this mean i have a defective sensor?
Can this be a kernel/rom related issue?
Pls someone try this and let us all noe.
Thanks
It's a long shot but you might attempt flipping the check mark a few times under the brightness setting and "auto adjust" as that probably toggles the sensor as well, though these apps are supposed to do it. Or close and start the app a few times and then check the sensor. I don't know what activates it but I can confirm that it has some kind of threshold where it sleeps or isn't active and another where it is, so you might want to try various things to, as others have mentioned, wake it up.
Are you using any ROMS by any chance or are you on stock? Have you done any sort of modification of the system - rooted and removed things or replaced kernels, etc?
If you are on a ROM or have done any modifications, you may want to try going back to full stock 3.2 or 3.1 and seeing if that helps before you decide it's actually defective.
Just double checked mine running a 3.2 rooted with thor's kernel. The sensor is working fine. But i did have to uncheck the box for the auto screen brightness to wake it up. Then i used a led maglight on the senor.
Readings from Androsensor:
Light (0.5mA)
55.0 lux
With the maglight cut on it.
65790.0 lux.
Please note with the maglight cut on you can see the light sensor hole then.
KILLER_K said:
Just double checked mine running a 3.2 rooted with thor's kernel. The sensor is working fine. But i did have to uncheck the box for the auto screen brightness to wake it up. Then i used a led maglight on the senor.
Readings from Androsensor:
Light (0.5mA)
55.0 lux
With the maglight cut on it.
65790.0 lux.
Please note with the maglight cut on you can see the light sensor hole then.
Click to expand...
Click to collapse
Same as Killer, seems to be working, rooted 3.2, couldnt see until bright light on it.
Anyone have any idea where the mic(s) are, not really important just wanna know which end to scream into when doing voice search
Mic is located directly in the top center of the front face, in the space between the glass and the bezel. You should be able to see it with just a small amount of light shining on it.
FINALLY!
after various non stop auto brightness toggle on and offs - waiting for event went and 1 lux came xD - i shone light the reading increased - and stopped working agen :|
I dunnu maybe the apps are not fully compatible.
I can say it is working because i changed my brightness to full manually and then turned auto on and the brightness level set itself automatically.
So will we have to wake up the sensor from a state of sleep all the time or is it just for the apps xP - last confusion.
Thanks every1 for ur responses, the mystery is finally coming to an end xD!

Proximity and light sensors.

I've been having an issue with both the proximity sensor and the light sensor. If I press the phone against my face it'll start pressing numbers or disconnecting calls (screen won't turn off due to the sensor not working) and the light sensor doesn't affect the illumination levels on my screen and buttons; actually the only way to make my buttons light up is manually changing the brightness (both screen and buttons) but after locking the phone and waking it back up the buttons stay unlit.
Has anyone else had this problem? I'm not sure if I've been having it after flashing CM9 or after my phone got a bit wet. I took the phone apart to check if something was wrong with the sensors (obstruction, dirt, corrosion, etc) but couldn't find anything.
Also, I downloaded "Sensors List" from the Play Store and both sensors are not detected.
Any ideas?
Idea...
About button light... Is your display brightness set to Auto? If not, set it to auto and your buttons will be fine.
I just tried doing that and it didn't worked, not even completely removing the screw. I guess the sensors got damaged with water (if they can be damaged that way). Oh, and setting the brightness to Automatic doesn't do anything either.
Thanks a lot though.

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