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.
Related
does hd has proximity sensor as my screen turns of even that my phone is far from my face
hoss_n2 said:
does hd has proximity sensor as my screen turns of even that my phone is far from my face
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Click to collapse
I dont think so it has a light sensor though, if you dont want it to turn off as many people dont you can download HD Tweak which will allow you to turn of the feature
Hope that helps
ozmoran said:
I dont think so it has a light sensor though, if you dont want it to turn off as many people dont you can download HD Tweak which will allow you to turn of the feature
Hope that helps
Click to expand...
Click to collapse
but in gsm arena it is said that it has proximity sensor
mmm interesting someone who knows more about the HD will answer this
sorry i couldnt help more
Correct me if I'm wrong but the CMOS camera on the front is used as a light sensor.
Slothie said:
Correct me if I'm wrong but the CMOS camera on the front is used as a light sensor.
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Click to collapse
You're wrong
The HD has a true light sensor (next to the earpiece, the little 2mm transparent plastic), but has not proximity sensor.
lpaso said:
You're wrong
The HD has a true light sensor (next to the earpiece, the little 2mm transparent plastic), but has not proximity sensor.
Click to expand...
Click to collapse
but why the screen turns off when closing the device to your face
hoss_n2 said:
but why the screen turns off when closing the device to your face
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Click to collapse
The HD uses the light sensor when you call.
I don't use the stock rom anymore, but I think it's functioning like that :
* You're in a light environment :
- you dial / receive a call, but keep the phone on the desk : the screen is on for about 10s then shutdown.
- you dial / receive a call and immediatly put it near your ear : the light sensor detects the difference of light, and shuts off the screen.
* You're in a dark environment :
- you dial / receive a call, and keep in on the desk or put it near you ear, it's exactly the same (I don't remember if it's shut immediatly or waits the default "about 10s" timeout).
The main difference between a light sensor and a proximity sensor is that the proximity sensor emits infrared that is reflected by your skin : it "knows" that you have the phone near your face, while the light sensor only know if "it's dark" or "it's light".
Another thing to know is that the light sensor doesn't work when the screen is off : that's why, in an environment with plenty of light, the screen is not powered back if you take away the phone from your face.
lpaso said:
The HD uses the light sensor when you call.
I don't use the stock rom anymore, but I think it's functioning like that :
* You're in a light environment :
- you dial / receive a call, but keep the phone on the desk : the screen is on for about 10s then shutdown.
- you dial / receive a call and immediatly put it near your ear : the light sensor detects the difference of light, and shuts off the screen.
* You're in a dark environment :
- you dial / receive a call, and keep in on the desk or put it near you ear, it's exactly the same (I don't remember if it's shut immediatly or waits the default "about 10s" timeout).
The main difference between a light sensor and a proximity sensor is that the proximity sensor emits infrared that is reflected by your skin : it "knows" that you have the phone near your face, while the light sensor only know if "it's dark" or "it's light".
Another thing to know is that the light sensor doesn't work when the screen is off : that's why, in an environment with plenty of light, the screen is not powered back if you take away the phone from your face.
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from what you are saying we deduce that gsm arena is not an accurate site to get specifications from
hoss_n2 said:
from what you are saying we deduce that gsm arena is not an accurate site to get specifications from
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Click to collapse
At least, they're wrong about the "proximity sensor" of the Touch HD
The first HTC with proximity sensor is the Touch Pro2. The TP2 has light sensor AND proximity sensor
you can try touch incall which allows you to change how the phone works during call !!
for example... turn off when held upright to face..
turn screen on when horizontal : )
According to the Leo/Linux status wiki (http://htc-linux.org/wiki/index.php?title=Leo/Status) the Ambient Light Sensor is still not working properly.
That would explain why auto backlight adjustment does not work.
However, when in the phone screen the light sensor seems to work in that the screen goes dark when I cover the light sensor, as expected.
So I am curious as to the status of this regarding auto backlight specifically, does anyone have any more concrete info?
Perhaps there are separate light sensors? Or perhaps the light sensor only works in a limited fashion for the time being?
Just curious, not complaining
(P.S. the free "Battery Level" widget from the Market has worked well for me in the absence of auto backlight adjustment, in case others find it useful)
well there's a proximity sensor on the phone that comes into play while you are in an active call. it disables the back as you put the phone to your ear. you were simply simulating that action by covering the sensor with your hand.
Ah ok! Thats what the proximity sensor is. That is indeed marked as working on the status wiki, so that makes sense.
Thanks!
This may be a total noob question, but I was just curious to know the exact location of the light sensor because I cant seem to figure out where it is located.
EricSS619 said:
This may be a total noob question, but I was just curious to know the exact location of the light sensor because I cant seem to figure out where it is located.
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Click to collapse
That dot that looks like a front facing camera (FFC) - that is your sensor there that controls screen on/off on calls and the auto brightness.
riggsandroid said:
That dot that looks like a front facing camera (FFC) - that is your sensor there that controls screen on/off on calls and the auto brightness.
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Click to collapse
Are you sure, because when I ran sensor test that dot did change the proximity sensor values, but the light values wouldnt change even if I covered it completely.
The only way I was able to change the light value was to move the whole phone into a darker or brighter location, but not by finding a pinpoint sensor on the phone.
Edit 2: When I cover the proximity sensor dot (the obvious one) with my finger and shine a light at the phone, nothing happens, and when I remove my finger from the dot and shine a light right on it, the screen gets brighter. I suspect both sensors are in the same spot (the plastic dot you see probably transmits ambient light to the light sensor as well as housing the proximity sensor, in the way many computers use a little clear/frosted plastic piece to indicate the status of an LED that is buried in the chassis.
Try it with a flashlight and see if you get different results.
If you are interested in disabling the light sensor go into settings and manually set your brightness.
I have to say the proximity sensor works much better than on my Hero.
Sent from my HTC Evo Shift 4G
i noticed the proximity sensor responds much faster than the one on my Evo
The light sensor is just to the right of the proximity sensor under the speaker grill. Turn on auto-brightness and test it with your finger.
Sent from my PG06100
BrandoKC said:
If you are interested in disabling the light sensor go into settings and manually set your brightness.
I have to say the proximity sensor works much better than on my Hero.
Sent from my HTC Evo Shift 4G
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Click to collapse
thats because i dont believe there is a proximity sensor on the hero.
karnoff said:
thats because i dont believe there is a proximity sensor on the hero.
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Click to collapse
I guess that's why it would be working better!
hello
my sgs2 have a problem he brings a light by my camera the proximity sensor.
and he brings red light what is this is this a wetness warning or what?
my olde sgs2 hes in the water falls. and i have a new sgs2. only he gives to red light in the sensor and he was wet.
is that the problem or what?
Ehh.. What?
Sent from my GT-I9100 using XDA Premium App
My sensor gives red light the proximity sensor. Sorry for my english. Id this normal?
Sent from my GT-I9100 using XDA App
He is saying his proximity sensor is red. Mine is red too. I think its normal. I can only see it when its dark though
Sent from my GT-I9100 using XDA App
Yep, very weak red light is normal. That's because it rather bright near infrared light.
Okay i can see i call and sometime when my phone is in standby have anyone this problem?
And when i test the sensor with AndroSensor than can i see rhe redlight. Some people says on a forum that the sensor cans see of the phone wet is with water...
Sent from my GT-I9100 using XDA App
rvosde1993 said:
hello
my sgs2 have a problem he brings a light by my camera the proximity sensor.
and he brings red light what is this is this a wetness warning or what?
my olde sgs2 hes in the water falls. and i have a new sgs2. only he gives to red light in the sensor and he was wet.
is that the problem or what?
Click to expand...
Click to collapse
when you are making call or sensor is activated somehow it' became red.
thats normal. dont panic.
It has nothing to do with water.
Okay. I will thank our now i can good sleep have a nice night or day!
Sent from my GT-I9100 with (Litening Rom 5.0) using XDA App
My proximity sensor will lit up the red light whenever I open up TalkBox app, I don't understand why as that app doesn't even use proximity sensor, maybe a bug or coding error in the program.
xsaintzx said:
My proximity sensor will lit up the red light whenever I open up TalkBox app, I don't understand why as that app doesn't even use proximity sensor, maybe a bug or coding error in the program.
Click to expand...
Click to collapse
Most probably .. contact the maker ..
rvosde1993 said:
hello
my sgs2 have a problem he brings a light by my camera the proximity sensor.
and he brings red light what is this is this a wetness warning or what?
my olde sgs2 hes in the water falls. and i have a new sgs2. only he gives to red light in the sensor and he was wet.
is that the problem or what?
Click to expand...
Click to collapse
i guess its a wetness sensor.. as i just experienced this issue some time back...
i had just taken a bath n my cell starting ringing, i went ahead n received the call without drying myself. As soon as i ended the call my screen went off, there was this red light coming out of one of the sensors, and the phone wasn't even switching on. I had to remove the batteries and place them back after which it started like normal.
xsaintzx said:
My proximity sensor will lit up the red light whenever I open up TalkBox app, I don't understand why as that app doesn't even use proximity sensor, maybe a bug or coding error in the program.
Click to expand...
Click to collapse
Talkbox uses the proximity sensor to determine how you are listening to your messages. If you hold the phone up to your ear then it will play the message through the earpiece. If you hold it away from your face then it will use the speaker.
karakemal said:
when you are making call or sensor is activated somehow it' became red.
thats normal. dont panic.
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Click to collapse
thx bro. i almost freaked out wen it happened again. and then i noticed that it only turns red wen m making a call ^_^
I have a problem with my proximity sensor too...
whenever im playing games/smsing/browsing with the phone...pretty much anything...
the red light is up...the only time its off is when lock...i used lcd test...it works fine(except ppl's proximity is 'null'...mine was '0')...anyone had this type of problem?
thx...=)
xWishx said:
I have a problem with my proximity sensor too...
whenever im playing games/smsing/browsing with the phone...pretty much anything...
the red light is up...the only time its off is when lock...i used lcd test...it works fine(except ppl's proximity is 'null'...mine was '0')...anyone had this type of problem?
thx...=)
Click to expand...
Click to collapse
null = 0 -.-
then any idea why is my proximity sensor light always on?i don think its normal...=)
xWishx said:
then any idea why is my proximity sensor light always on?i don think its normal...=)
Click to expand...
Click to collapse
It may be a bug or something... Did you try updating your phone, or flashing a new stock/custom ROM to see if the problem remains ?
Proximity sensor which is located beside the front facing camera will always be activated whenever you're in a call. It's slightly red in colour, and more noticable in a dark room. To see the proximity sensor in action you can go to the phone dialer and key in *#0*# and it will bring up the LCD test. Select sensor and you can see the red light of the proximity sensor being lit up. Hover your finger or an object over the proximity sensor (need not to be covering the sensor) and the phone will vibrate and so will the background change to green.
SGS-II said:
Proximity sensor which is located beside the front facing camera will always be activated whenever you're in a call. It's slightly red in colour, and more noticable in a dark room. To see the proximity sensor in action you can go to the phone dialer and key in *#0*# and it will bring up the LCD test. Select sensor and you can see the red light of the proximity sensor being lit up. Hover your finger or an object over the proximity sensor (need not to be covering the sensor) and the phone will vibrate and so will the background change to green.
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Click to collapse
Lol at you... Did you even bother reading the first page of the thread ? Guess not, since you're just repeating what we already told the guy
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...