Hi all. There are 2 LEDs, but when flashlight is on, only one (on the top) is active. I thought the second one can be activated when camera is used, but no, it does not help. Any ideas on how and when it should be active? Can someone check this on your device so that I can know whether it is a hardware issue with my phone? Thanks in advance!
It seems that's a kind of light sensor, or infrared led - because it even doesn't shine when I apply external 365nm UV light source.
It's the second light sensor which measures light coming from the back side of the phone. When you shine a strong light directly on this sensor, screen brightness bumps up after a while. It doesn't happen if you cover the sensor by finger. The purpose is to have screen readable when you're holding the phone against bright background (window, TV screen...) and in my experience it's quite a nice feature.
Related
when set to auto adjust, the brightness goes up when light levels increase. fine.
when light levels are low or darkness, they never seem to dim back to low level.
they only dim back if i switch the screen off/on
do i have fault or is the a feature?
Iv heard if you have a screen cover on teh front it can cause problems. I have the zagg invisible sheild, and dont have a problem with it.
i have the same problem... and i canot find a aplication to set up how much light to give at display for each value it gets from light sensor... something like in windows mobile...the autoadjust is crap it hurts my eyes in a totaly black room
The official HTC screen protectors have holes in them where the sensors are located. There's a light sensor to adjust the screen brightness, and the proximity sensor which turns off the screen when the phone is next to your face on a call. You can't see them by looking at the phone alone, but they're there at the top of the phone screen, near the speaker.
Sent from my HTC Desire using Tapatalk
okay.. i looked through the manual when I got the phone and. it says theirs an led to the left of the speakers.. and I'm like no? lol its obviously to the right.. well I called someone on accident tonight and was looking at my phone and a little light lit up to the left of the speaker..anyone know what it's for? lol i is it only calls or what..
seems pretty useless =/ ide rather have a multi colored LED like the evo or evryother phone instead of two red leds lol
Sent from my SPH-D710 using xda premium
I believe those are the camera & light sensors.
Sent from my SPH-D710 using xda premium
Yeah dude those are totally you FFC (front facing camera) and the proximity sensor
Woah wtf CONFIRMED. Seriously just checked and although its very dim, there IS a light on the left corner of the speaker. Its a dark red. I called bull until I tested it. Here's how to see it:
Make a call in the darkest area possible ( the light is very dim) and look directly over the S in SAMSUNG. Interesting!
Edit: ok not an led you're right its the proximity sensor glowing red. If you cover it with your finger, the screen shuts off during a call
Epic-ly tapped from my Galaxy SII
Zoidpilot said:
Woah wtf CONFIRMED. Seriously just checked and although its very dim, there IS a light on the left corner of the speaker. Its a dark red. I called bull until I tested it. Here's how to see it:
Make a call in the darkest area possible ( the light is very dim) and look directly over the S in SAMSUNG. Interesting!
Edit: ok not an led you're right its the proximity sensor glowing red. If you cover it with your finger, the screen shuts off during a call
Epic-ly tapped from my Galaxy SII
Click to expand...
Click to collapse
the sensors right next to it if look at it in a very well lite environment like outside on a sunny day. the light that glows red is to the right of the sensor
Sent from my SPH-D710 using xda premium
The one that you can see is actually the proximity. The other is the ambient light sensor for the auto brightness. Get over it.
RainMotorsports said:
The one that you can see is actually the proximity. The other is the ambient light sensor for the auto brightness. Get over it.
Click to expand...
Click to collapse
lol jeez, okay, thanks. lol
Sent from my SPH-D710 using xda premium
RainMotorsports said:
The one that you can see is actually the proximity. The other is the ambient light sensor for the auto brightness. Get over it.
Click to expand...
Click to collapse
Actually that's not totally correct. The hole directly to the right of the front-facing camera is a photodiode. When a call is in progress it acts as the proximity sensor, and all other times it is the ambient light sensor. To the right of that is an infrared LED - these cast a dim red glow that you can barely see in dim conditions, but if you were to look at it through the lens of a camcorder or digital camera (which are sensitive to infrared light), you will see that it lights up brightly - indicating a large amount of infrared. Skin is very reflective when it comes to infrared. When the infrared light coming out of the LED bounces off your skin and back to the photodiode, the system knows that the phone is against your head and turns the screen off.
Yeah somewhere in the back of my head i knew they likely worked in tandem. Obviously the proximity sensor needs a reciever to pickup the reflected wavelengths. Good info.
there is a weird (faint) red light when I'm in a call, anyone know what this is??
(when I take a picture of it using my sensation camera it looks very bright but in real life it is faint like you wouldnt notice it until you look closer)
its there whether screen is on or off, and and if i put my hand over it it just stays lit
is it infrared or something to detect when my ear is near the screen??
My understanding is that is the sensor that tell the phone if your head is next to it or not.
As above, its the proximity sensor for turning the screen off when your face is near the phone.
There are loads of threads on Crackberry about it as their sensor flashes quite noticeably.
Steve
Hi,
I noticed that in the upper left corner, near the proximity sensor when I am on a call there is always a red light flashing. So I thought that maybe that is from the proximity sensor alone, but then I remembered as this is not my first device with a proximity sensor that I have never noticed something like this. I also used HTC Desire and never noticed red light near the proximity sensor. I would like to ask you if you all have it also or maybe it's just on my phone.
Thanks
Good question, I am thinking about this from the beginning
(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.