Well i am very confused whether our phone has a light sensor or not. In the official user manual of I5801 (English-India), at page number 17, its clearly stated that the left one of the two sensors on top left side of our phone is proximity sensor and the right one is light sensor. If there is one, then why is there not any option for automatic brightness? and what its use is? And if its not there, then why is it given in the User's manual ?
Does anyone have any information on this at all? Was/is there any rom that supported automatic brighness via the light sensor?
So why isn't it included in Samsung' Stock Rom ?
Do you think really that no-one ever try to use it .
nishant_713 said:
Well i am very confused whether our phone has a light sensor or not. In the official user manual of I5801 (English-India), at page number 17, its clearly stated that the left one of the two sensors on top left side of our phone is proximity sensor and the right one is light sensor. If there is one, then why is there not any option for automatic brightness? and what its use is? And if its not there, then why is it given in the User's manual ?
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There is no light sensor on Galaxy I5800/5801. The proximity sensor is actually a pair of sensors, one sends an electromagnetic/Infrared radiation while the other one is to receive it back for the sensor to get activated.
nsm1234 said:
There is no light sensor on Galaxy I5800/5801. The proximity sensor is actually a pair of sensors, one sends an electromagnetic/Infrared radiation while the other one is to receive it back for the sensor to get activated.
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Wow, this is kinda shocking news!
is there anyway to calibrate the proximity sensor on the sensation, not 100% sure thats my problem but worth a try if poss
bradmax57 said:
is there anyway to calibrate the proximity sensor on the sensation, not 100% sure thats my problem but worth a try if poss
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Would like to know this as well.Proximity and light sensors not working properly on my Sensation (only occasionally).
I'd like to know how to recalibrate / get it functioning again.
Yes,i like to know that to.
Still having problems with both proximity and light sensors...
The proximity and light sensors cannot be calibrated, as they put off specific amounts of voltages based on results from the input. It is up to the ROM/Kernel to interpret the voltages from the sensors as usable values to produced the desired results. If you wish, you can download a testing program such as AndroSensor to view the interpreted sensor readings.
I was wounding if someone here could tell why Proximity sensor only works at night?
Thanks in advance
no answer
pbazw said:
I was wounding if someone here could tell why Proximity sensor only works at night?
Thanks in advance
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Has no one ever seen this?
Kernel settings probably or sensor problem.
But you better try another compatible with your ROM kernel or search how to edit it's settings.
touristas0 said:
Kernel settings probably or sensor problem.
But you better try another compatible with your ROM kernel or search how to edit it's settings.
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I used several different roms and this is always the case.
The proximity and light sensor are different. The intensity sensor sure has more sensitivity at night, but the proximity sensor has its own IR. It will work just well in both day and night.
If you have this problem on all ROMs, you might have a hardware issue. Try updating your firmware.
Happy to help.
Far_SighT said:
The proximity and light sensor are different. The intensity sensor sure has more sensitivity at night, but the proximity sensor has its own IR. It will work just well in both day and night.
If you have this problem on all ROMs, you might have a hardware issue. Try updating your firmware.
Happy to help.
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I'm running 3.33 firmware and this happens on all roms, not sure why but light and proximity stop working at same time and they both start working when room is dark.
When I put my finger on the sensor, it used to open instantly, but now it takes about a second and a half.
Anyone know why this is happening?
Are you talking about the fingerprint sensor?
Sounds like he's talking about the fingerprint sensor but due to the confusing title, I am not sure.
JAYNO20 said:
Sounds like he's talking about the fingerprint sensor but due to the confusing title, I am not sure.
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Yeah, i'm talking about that.
When you put your finger on the sensor when the device was sleeping, it would instantly wake. Now it takes about a second to do wake.
I noticed the other night as I was using my pixel 2 and viewing a security camera monitor when it's infra-red/night vision was active that the IR beacon on the front of my phone pulses regularly even when I am not using the front camera of my phone, and don't have a camera app running at the time. Does anyone know why the phone is using the IR light and sensor when I'm not using the phones front camera?
I don't think the pixel 2 has an ir on it.
leveleyed said:
I noticed the other night as I was using my pixel 2 and viewing a security camera monitor when it's infra-red/night vision was active that the IR beacon on the front of my phone pulses regularly even when I am not using the front camera of my phone, and don't have a camera app running at the time. Does anyone know why the phone is using the IR light and sensor when I'm not using the phones front camera?
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Are you talking about the notification LED that sits in the top left hand corner or the camera LED flash? Your confusing me with this infrared/IR business. The pixel 2 doesnt have infrared.
enzyne said:
Are you talking about the notification LED that sits in the top left hand corner or the camera LED flash? Your confusing me with this infrared/IR business. The pixel 2 doesnt have infrared.
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No, I am certain it is not the notification LED. That is visible in normal lighting conditions. What I am referring to is only visible in night vision, which uses an infrared light and sensor. So this is clearly a blinking infrared light on the top of the front/face of the phone. I believe it is normally used to detect the distance of subject matter to help adjust the front camera focus depth.
Also, I don't know how the "n" in infrared got deleted after I finished typing in the rest of the title for this post, but I assure you that when I typed the word it showed up as "infrared" not "I frared". And now I can't seem to figure out how to edit the title of the post, so I guess it's stuck like this.
I'm starting to wonder if I've stumbled upon something that may be evidence that the phone is always using the front-facing camera - even when the user isn't using the camera or any app that uses the camera. I had my fiancée also come into the room so I could see if the same happened with her iPhone 6. On hers, no light on the front was active until she unlocked the phone. But as soon as she did, an infrared light on the face of it stayed illuminated *constantly*, whereas the one on my pixel 2 just flashes periodically.
My inner conspiracy theorist is starting to wonder WTF is going on here, and why these sensor arrays are active even when the front camera isn't in use.
I'm hoping a well-informed Android or Pixel 2 developer will see this and respond to address these concerns.
leveleyed said:
No, I am certain it is not the notification LED. That is visible in normal lighting conditions. What I am referring to is only visible in night vision, which uses an infrared light and sensor. So this is clearly a blinking infrared light on the top of the front/face of the phone. I believe it is normally used to detect the distance of subject matter to help adjust the front camera focus depth.
Also, I don't know how the "n" in infrared got deleted after I finished typing in the rest of the title for this post, but I assure you that when I typed the word it showed up as "infrared" not "I frared". And now I can't seem to figure out how to edit the title of the post, so I guess it's stuck like this.
I'm starting to wonder if I've stumbled upon something that may be evidence that the phone is always using the front-facing camera - even when the user isn't using the camera or any app that uses the camera. I had my fiancée also come into the room so I could see if the same happened with her iPhone 6. On hers, no light on the front was active until she unlocked the phone. But as soon as she did, an infrared light on the face of it stayed illuminated *constantly*, whereas the one on my pixel 2 just flashes periodically.
My inner conspiracy theorist is starting to wonder WTF is going on here, and why these sensor arrays are active even when the front camera isn't in use.
I'm hoping a well-informed Android or Pixel 2 developer will see this and respond to address these concerns.
Click to expand...
Click to collapse
That's interesting. I will try with my phone and nest camera and see if it acts the same on mine.
I just tested it again, holding the phone at varying angles from the security camera, activating and deactivating its night vision/IR mode to see the difference. I recorded a video of it and will post a link tomorrow. When infrared is active, there is a clearly visible blinking light located in the center of the top of the phone just above the speaker bar (the one to the right of the front camera).
I'm really curious to get to the bottom of this so that I can dismiss the paranoia that big brother is constantly watching me through my phone's camera.
leveleyed said:
I just tested it again, holding the phone at varying angles from the security camera, activating and deactivating its night vision/IR mode to see the difference. I recorded a video of it and will post a link tomorrow. When infrared is active, there is a clearly visible blinking light located in the center of the top of the phone just above the speaker bar (the one to the right of the front camera).
I'm really curious to get to the bottom of this so that I can dismiss the paranoia that big brother is constantly watching me through my phone's camera.
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?It's the proximity sensor.
ajrty33 said:
?It's the proximity sensor.
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Exactly!!
But why is the proximity sensory active all the time? Is it so the Ambient display doesn't turn on when face down?
oSandmaNo said:
Exactly!!
But why is the proximity sensory active all the time? Is it so the Ambient display doesn't turn on when face down?
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Its constantly trying to see if your phone is up to your ear or not.
I'm also wondering why the phone would need to have the proximity sensor active when I'm not using Ambient mode, and not currently engaged in a call. There's no need for it to be using the proximity sensor when I'm just browsing my home screen or using some other app. My phone isn't configured to turn off the screen if I set it face down for awhile or anything like that. So there shouldn't be anything using the proximity sensor.
This is common in modern phones, it's checking if you're holding it, if it if is by your face, in your pocket it allows gestures like wave to wake
Get used to it, it's not going away.
mrkhigh said:
This is common in modern phones, it's checking if you're holding it, if it if is by your face, in your pocket it allows gestures like wave to wake
Get used to it, it's not going away.
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But the pixel doesn't have any of those features.
if u want to turn the sensor, disable all option in ambient display.
koax88 said:
if u want to turn the sensor, disable all option in ambient display.
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Nope. I tested that a few months ago (this isn't the first time this has been spotted). You can turn the ambient display off completely and the sensor is still active.
Unless of course they've realised in the meanwhile that this is pointless and fixed it in a software update - I've not retested it recently.
Large Hadron said:
Nope. I tested that a few months ago (this isn't the first time this has been spotted). You can turn the ambient display off completely and the sensor is still active.
Unless of course they've realised in the meanwhile that this is pointless and fixed it in a software update - I've not retested it recently.
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I Just tested my phone, the sensor did not blink at all if u turn off all setting in the ambient Display section. Even double tap to wake will make the sensor blink. I noticed this since 8.0 tho.
Sent from my Pixel 2 using Tapatalk
oSandmaNo said:
But the pixel doesn't have any of those features.
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It certainly does. I use it to keep the screen off when my phone, in an Otterbox Defender, is in the holster, or when I lay it down face down. Both the front and rear cameras can see into the infrared. Just aim a TV remote at them when any camera app is running and press a button and you'll see the remote's IR LED going. (It has no IR output, though.)