Hi,
So i see this light in front , of the phone , on the top in this video at 5.09 min
http://youtu.be/_1gfr8vu4PM?t=5m
and think i seen this in a video on Pocketnow for a short time too ?
So i know there is no Notification Light normally in the front , but
what´s we seen here ?
It's the proximity-sensor. It emits infra-red light that reflects from your cheek when having it up against your ear. This turns off the screen.
The SGS2 has no notification light. Only camera's can pick up the infra-red light, that's what you saw. In some occasions I have seen it with my bare eyes. Very weird though.
Edit: I remember when I saw it. There is a lockscreen app that allows you to unlock the phone using 'The Force'. When you turn on the screen, the proximity sensor lights up at full-power, making you able to see it I guess. Then when moving your hand over your phone in Jedi fashion, it unlocks the screen.
Ok Thanks for your answer
Related
Hello,
If I look in the sensors section of "Android System Info", it doesn't list a light sensor (I believe that the light sensor is used to dim the screen when it's dark). The thing is, I've seen the screen dim by itself before. If I put my hand on top of the phone (where the proximity sensor is located... I think...), the screen dims. If I remove my hand, the screen gets brighter.
Does the X10 have a light sensor or not? Is it possible that the light sensor is "hardwired" to the screen without "passing" through the OS to dim the screen?
The light sensor on my X10 is to the left of the earpiece. To the right are the proximity sensor and further right is the notification led.
argnom said:
Hello,
If I look in the sensors section of "Android System Info", it doesn't list a light sensor (I believe that the light sensor is used to dim the screen when it's dark). The thing is, I've seen the screen dim by itself before. If I put my hand on top of the phone (where the proximity sensor is located... I think...), the screen dims. If I remove my hand, the screen gets brighter.
Does the X10 have a light sensor or not? Is it possible that the light sensor is "hardwired" to the screen without "passing" through the OS to dim the screen?
Click to expand...
Click to collapse
Since you can disable it in the settings, i don't think it's hardwired.
sl1nk3 said:
Since you can disable it in the settings, i don't think it's hardwired.
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Click to collapse
Good point, I don't understand why android system info cannot see it though. Same goes for the service menu, it seems it's the only sensor in there that cannot be tested.
lft4ded said:
The light sensor on my X10 is to the left of the earpiece. To the right are the proximity sensor and further right is the notification led.
Click to expand...
Click to collapse
+1 .........................
I downloaded a few apps from the market that force the led flashes to stay on, to act as a flashlight. The atrix has 2 LEDs on the back, when I launch the app, (I've tried a few, same results each time) both lights turn on, but one flickers, and then turns off. It seems to work fine when I'm taking a picture, as the "flicker" is as long as an average flash but...
Someone download: https://market.android.com/details?id=com.teslacoilsw.flashlight&feature=search_result
Tell me results plz.
Techcruncher said:
I downloaded a few apps from the market that force the led flashes to stay on, to act as a flashlight. The atrix has 2 LEDs on the back, when I launch the app, (I've tried a few, same results each time) both lights turn on, but one flickers, and then turns off. It seems to work fine when I'm taking a picture, as the "flicker" is as long as an average flash but...
Someone download: https://market.android.com/details?id=com.teslacoilsw.flashlight&feature=search_result
Tell me results plz.
Click to expand...
Click to collapse
yeah I don`t have the the led flicker problem, my doesnt like the app acts buggy
describe buggy
I also see this. One looks more yellow than the other aswell. I think there are two different flash settings, and the apps try to use the same setting for both, which is underpowering the brighter of the two leds. Mine after about 30 seconds of constant on will flicker on and off randomly.
Have you tried this app
Techcruncher said:
I downloaded a few apps from the market that force the led flashes to stay on, to act as a flashlight. The atrix has 2 LEDs on the back, when I launch the app, (I've tried a few, same results each time) both lights turn on, but one flickers, and then turns off. It seems to work fine when I'm taking a picture, as the "flicker" is as long as an average flash but...
Someone download: https://market.android.com/details?id=com.teslacoilsw.flashlight&feature=search_result
Tell me results plz.
Click to expand...
Click to collapse
below is the link to the flashlight app I use. It lets you use the LED and/or the screen and works well for me. If you haven't tried it see if that works for you, when I use it I have no issues with both LED's working at the same brightness level.
>>> com.devuni.flashlight.apk <<<
Techcruncher said:
describe buggy
Click to expand...
Click to collapse
somtetimes it locks up and wont respond
Droidlight
I installed Droidlight on two different Atrixes. On both, the light color is surprisingly yellow. One keeps the light steady, the other phone has one led that flashes. Weird.
Also seem to have a problem with the led flash for photos. The flash seems dim and photos are underexposed. Not sure if this is just the Atrix, or somehow conflicting with Droidlight (although seems a stretch).
The flashes are meant to work together so that pictures cone out better thaan with a standard single flash. That's why there are two.
When you guys use the apps to keep them on, it causes them to work improperly. Best thing to do is to allow them to work right and download a new photo program instead.
Sent from my MB860 using XDA App
flash issues as well
no matter what flashlight app i use, even turning on the flash in the native camcorder app the following happens:
led's light up bright
led on the left (looking directly at the back of the phone) flickers then turns off.
led on the right begins to blink after about 10-15 seconds!
This is so frustrating and am beginning to believe it is a hardware issue. Anyone else have a similar issue?
Droidlight has a new update solely for "atrix bug fixes" does that solve your problems?
Sent from my MB860 using XDA App
Redbluefire said:
Droidlight has a new update solely for "atrix bug fixes" does that solve your problems?
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
same thing with droidlight
I have exact same problem. What i believe it to be is that the second flash is a red-eye reducer. When you take a pic with flash red eye occurs. The second flash is meant to briefly light up, significantly reducing red eye.
Since the second flash is intended to only briefly light up during a flash picture (the only intended use) on of the bulbs will fire for a much shorter time length.
When you see one flickering, it is just trying to repeatedly "flash" as it would during a picture.
If you are able to keep both lights on through a flashlight app, you'e very lucky, but your light is probably broken.
CONFIRMED
Photography techniques for prevention and removal of red-eye
The red-eye effect can be prevented in a number of ways.
Using bounce flash in which the flash head is aimed at a nearby pale colored surface such as a ceiling or wall or at a specialist photographic reflector. This both changes the direction of the flash and ensures that only diffused flash light enters the eye.
Placing the flash away from the camera's optical axis ensures that the light from the flash hits the eye at an oblique angle. The light enters the eye in a direction away from the optical axis of the camera and is refocused by the eye lens back along the same axis. Because of this the retina will not be visible to the camera and the eyes will appear natural.
Taking pictures without flash by increasing the ambient lighting, opening the lens aperture, using a faster film or detector, or reducing the shutter speed.
using the red-eye reduction capabilities built into many modern cameras. These precede the main flash with a series of short, low-power flashes, or a continuous piercing bright light triggering the iris to contract. (This should not be confused with the autofocus assist beam, which uses a series of flashes for focus instead.)
Having the subject look away from the camera lens.
Increase the lighting in the room so that the subject's pupils are more constricted.
Some computer digital image editors have the ability to lessen the red eye by desaturating the red color.
If direct flash must be used, a good rule of thumb is to separate the flash from the lens by 1/20 of the distance of the camera to the subject. For example, if the subject is 2 metres (6 feet) away, the flash head should be at least 10 cm (4 inches) away from the lens.
Professional photographers prefer to use ambient light or indirect flash as the red-eye reduction system does not always prevent red eyes, for example if people look away during the pre-flash. In addition, people do not look natural with small pupils, and direct lighting from close to the camera lens is considered to produce unflattering photographs.
Various graphics editing software packages have functions to remove red eyes from digital photographs. Some have automated this process, and can apply it to many photos at once. Red-eye removal is also built into many popular consumer programs, such as Adobe Photoshop, Apple iPhoto, Corel Photo-Paint, GIMP, Google Picasa, and Microsoft Windows Live Photo Gallery.
Source: http://en.wikipedia.org/wiki/Red-eye_effect[edit]
I confirmed that it is in a fact a hardware issue with my atrix. We now have three at the workplace and mine is the only one with the issue. I am getting it replaced.
tonman23 said:
I confirmed that it is in a fact a hardware issue with my atrix. We now have three at the workplace and mine is the only one with the issue. I am getting it replaced.
Click to expand...
Click to collapse
Thanks. Just noticed this on my Atrix as well tonight. Will be going to AT&T and getting a new one tomorrow.
For anyone else who might want to test their flash:
My problem started when I would use the flashlight app.
-The left LED would flicker and go off.
-Now it doesn't turn on at all.
-The camera no longer flashes the left LED.
I have brightest flashlight free app installed and haven't had any problems. Both led's come on really bright and stay on
Sent from my MB860 using XDA App
I would like to update my issue with the flashlight app & LED lights on the Atrix.
I previously had a phone that started flashing the left LED whenever I used a flashlight app. After a coulpe of weeks, I noticed that the LED would not turn on at all during both camera and flashlight app uses.
I went back to Costco and exchanged for a new unit.
I came to find out that my left LED still blinks after 15-20 seconds of use. One thing I noticed is that the LED on my new Atrix is way LESS yellow than my first Atrix. (Quality control, anyone?)
People have confirmed that their Atrix has no flashing of the LEDs when using a flashlight app.
I am most likely going back AGAIN and getting a new Atrix again.
ALSO, the flashing of the LED is NOT intended for Red Eye Reduction, as someone previously pointed out. That is WRONG information. I believe it to be a hardware/software problem with some Atrix units.
Regardless of the flashlight app you use, can you keep the LEDs both at 100% for longer than 20 seconds without any blinking?
Any input is appreciated. Thanks!
I have a problem with my proximity sensor (probably dust?) and I can't clean it. Now, every time I get a call on all roms I tried the screen shuts off (that is normal) but won't turn on (ie. if I have to press keys while talking or activate speaker)
The only way I have for now is flashing a very bright light on the sensor and it only works sometimes....
So my question is : is there and app, a dialer, an option, a way or whatever other trick to have the screen turned on while in a call?
Peek at this:
http://androidforums.com/htc-amaze-4g/672412-proximity-sensor-problem.html
Supposed to be a free tmobile proximity sensor recalibrator here, but the page wouldn't load for me. Maybe it is available elsewhere.
Also, if your screen protector is covering it, maybe that is making a difference?
I couldn't find a way to disable the proximity sensor or change its sensitivity, however there might still be a way.
Good luck.
First I want to apologise for my bad english. Now, the problem is that the LED indicator on my galaxy is always ON. There is a dim red constant light. The phone isn't charging or having low battery. Even when the phone is switched off the light is still there. It shuts down only when the battery is unplugged. All other notification lights are working well even when plugged in charging the red light is brighter. I'm using Stock 4.3 Jelly Bean and I'll attach a picture if you didn't understand what I was explaining. Thanks !
That's the proximity sensor not LED... It must be in active mode constantly due to some app you have installed.. So just look fit any app that might have permissions for your sensor....
Sent from my GT-I9300
No it's not the proximity sensor. I made the picture with a mirror because I didn't have another phone or a camera in hand. The problem is with the led light which is on the left side of the earpiece.
allexanderrr said:
No it's not the proximity sensor. I made the picture with a mirror because I didn't have another phone or a camera in hand. The problem is with the led light which is on the left side of the earpiece.
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Click to collapse
Try this app see if you can disable it >> https://play.google.com/store/apps/details?id=com.rageconsulting.android.lightflowlite&hl=en <<
It didn't work....
Hello,
Has anyone noticed a promixity (maybe ambient light) sensor issue? Often (more in the dark) I can see a weak red light blinking right where there is the proximity sensor(it stays there if automatic brightness is on). I tried disabling and closing one app per time but it seems more like a software bug...
Anyone else?
Sony Xperia X F5121
Hello ! Yes! (sorry for my language I'm French).
Tonight, after charging my phone at 100%, I have seen a red little light in the '' capter '' a the right (for automatic luminosity I think). It was a big bug who during ~ 30 minutes. And I have lost 20% of battery, I think, cause to this bug.. Do you already have the bug today?
daddu97 said:
Hello,
Has anyone noticed a promixity (maybe ambient light) sensor issue? Often (more in the dark) I can see a weak red light blinking right where there is the proximity sensor(it stays there if automatic brightness is on). I tried disabling and closing one app per time but it seems more like a software bug...
Anyone else?
Sony Xperia X F5121
Click to expand...
Click to collapse
I've een it also sometimes but i've no idea what it is
me too,but i've noticed that only blinks when its recieveing data when changing from wifi to 4g and viceversa,when its done,it doesnt blink anymore.
Does anyone have any idea for this problem please ? :'(
daddu97 said:
Hello,
Has anyone noticed a promixity (maybe ambient light) sensor issue? Often (more in the dark) I can see a weak red light blinking right where there is the proximity sensor(it stays there if automatic brightness is on). I tried disabling and closing one app per time but it seems more like a software bug...
Anyone else?
Sony Xperia X F5121
Click to expand...
Click to collapse
@Mr High Tech @kistigun @kalel29
Are you kidding me guys? :laugh::laugh:
It's not a red light.... It's barely visible because it's an Infrared Sensor Infrared light is usually visible only in very dark conditions.
Hint that will make your day - when it's dark and you barely see it, try pointing a camera at it! It flashes white now, doesn't it.
Sebi673 said:
@Mr High Tech @kistigun @kalel29
Are you kidding me guys? :laugh::laugh:
It's not a red light.... It's barely visible because it's an Infrared Sensor Infrared light is usually visible only in very dark conditions.
Hint that will make your day - when it's dark and you barely see it, try pointing a camera at it! It flashes white now, doesn't it.
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Click to collapse
more than wanting to know what it is, i think they want to understand why; why does the proximity sensor stay on?
i had this question too, before updating to the latest firmware (.292). after that, it seems the "problem" doesn't occur anymore, but i'm not that sure. i'll have to double check.
however, do some of you use "Smart backlight control" feature?
carlo93 said:
more than wanting to know what it is, i think they want to understand why; why does the proximity sensor stay on?
i had this question too, before updating to the latest firmware (.292). after that, it seems the "problem" doesn't occur anymore, but i'm not that sure. i'll have to double check.
however, do some of you use "Smart backlight control" feature?
Click to expand...
Click to collapse
Smart backlight control makes use of the accelerometer of the phone. Keeps the screen on by detecting movement. Neat feature.
Smart call handling on the other hand uses the proximity sensor. Also the style cover preinstalled software. And of course Call handling uses the proximity sensor.
I'm using a modified version of Gravity Screen for pocket mode. Proximity sensor flashes all the time in order to turn the screen on and off when it's in or out of the pocket. Also I use the proximity sensor so that the screen won't turn on when it's in the pocket - like when a call comes in and I don't want to accidentally answer.
One thing you should know about the proximity sensor is that it uses a crazy low amount of power (0.18mA). Now the software that uses the sensor might have many wakelocks but we also need features so it's a small price to pay haha. Also if you're planing on using gravity screen (which is a cool app), you can always add a on/off widget.
There's really nothing to worry about - none of those features/apps I mentioned register on power consumption.