After I updated my Nokia Lumia 920. the screen turns off when im dialing someone, and the only way to get it back is to restart it or if the person on the other end hangs up.
Could it be the light sensor? or is it just the phone update that messed it up?
http://discussions.nokia.com/t5/Nok...n-t-switch-off-Lumia-920/td-p/1606440/page/10
Thanks!
I will return it tomorrow, since im not ready to open it after 20 days of use
now its REALLY FIXED but need to open the phone (only two screws )
Symptoms:
Experience screen and touch sensor switch off during a call, Notifications (the screen stays off, like if it was in a pocket) which doesn't turn on as usual.
Try:
If during a call you press and hold the upper left corner of the glass -just between the speaker and the upper left corner- you will notice that the sensor works as expected.
I think :
Because of the layered nature of the phone internals design and the heavy use of ribbon connectors it had to be tight to connect the board with the sensor.
My Solution:
I just added a peace of sponge (W:4mm/H:5mm/L:15mm) (all weather door and window sealant) -that comes self adheasive from one side- and sticked a small peace on the board on the opposite side of the phonejack/secondary mic connectors (Pictures attached) this will add pressure on the board to be more tight tried it and working as normal.
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cbadk said:
Thanks!
I will return it tomorrow, since im not ready to open it after 20 days of use
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Click to collapse
Mine is suffering the same issue. In the Nokia forums one user recommended to "blow air" across the top of the phone where the display meets the case right above the Nokia logo. I did this and now my proximity sensor is working. It's got to be dust getting on the sensor. I'm going to take mine apart and see if I can come up with a seal for the FFC and proximity sensor.
Related
Hello,it seems there is no Q&A forum for this device, so here is my doubt:
Although the tech manual for the xperia S from the sony website report a proximity sensor, I fail to find one on my phone.
There seems to be a black oval spot on the glass next to the light sensor as if some sort of sticker can be removed to install the sensor.
The light sensor seems to work, since I've seen the screen go darker and brighter, but when I'm in a call and put the phone in my ear the screen wont shut off like in my old SGS nor will it turn on when I move the phone away from my face.
are your phones like mine? or is mine a defective unit?
I guess ur device has something wrong with it.
By the way; did u place a screen protector?? Coz if u did that may be the problem!
I think the light and proximity sensor are the same.
There is something wrong with your phone,maybe you should try to flash a new firmware.
Sent from my LT26i using Tapatalk 2
grained said:
Hello,it seems there is no Q&A forum for this device, so here is my doubt:
Although the tech manual for the xperia S from the sony website report a proximity sensor, I fail to find one on my phone.
There seems to be a black oval spot on the glass next to the light sensor as if some sort of sticker can be removed to install the sensor.
The light sensor seems to work, since I've seen the screen go darker and brighter, but when I'm in a call and put the phone in my ear the screen wont shut off like in my old SGS nor will it turn on when I move the phone away from my face.
are your phones like mine? or is mine a defective unit?
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Click to collapse
Hi,
Mine works fine...
Do this:
1>Go to dialpad and type *#*#7378423#*#* (*#*#SERVICE#*#*)
2>A menu pops up in that u will see service tests select that
3>Then scroll down and select Proximity Switch
4>Initially it will display as OFF. Now u place your finger or hand on the Proximity Sensor, then the value of Proximity Switch on the screen will change to ON.
If this is working then the sensor is just fine u need to update the firmware else u need to go and replace the piece IMO though.
Thank you all for the feedback.
I used the service menu to check the sensors ...
indeed the proximity sensor is always off, even when I put my finger on it, it seems someone forgot to remove the black paint from behind the glass, but I will update it anyway to make sure before returning it.
grained said:
Thank you all for the feedback.
I used the service menu to check the sensors ...
indeed the proximity sensor is always off, even when I put my finger on it, it seems someone forgot to remove the black paint from behind the glass, but I will update it anyway to make sure before returning it.
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sensor is IR, so darkened window is normal for it. but if it have always closed windows - than its status must be always ON. so, most likely you have faulty sensor (or bug in firmware)
goodwin_c said:
sensor is IR, so darkened window is normal for it. but if it have always closed windows - than its status must be always ON. so, most likely you have faulty sensor (or bug in firmware)
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Hi,
Exactly it should be showing status as ON if it's covered replace the piece as soon as possible
shoz_on4u said:
Hi,
Exactly it should be showing status as ON if it's covered replace the piece as soon as possible
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If it was covered by the glass/ cover it would show OFF because the glass doesn't radiate heat like your body does.
Sent from the Delta Quadrant using a transwarp conduit.
Pezo said:
If it was covered by the glass/ cover it would show OFF because the glass doesn't radiate heat like your body does.
Sent from the Delta Quadrant using a transwarp conduit.
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Proximity sensor on phones does not react to heat. It have simple IR transmitter, which emits a beam, and IR sensor, which react on reflected beam.
goodwin_c said:
Proximity sensor on phones does not react to heat. It have simple IR transmitter, which emits a beam, and IR sensor, which react on reflected beam.
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You are right, just tested it and it seems to be a reflective sensor.
thanks for the tips, it was indeed a faulty sensor and they gave me a new phone right away .
I hope I don't get any more problems like a yellow tint :X (knock on wood with fingers crossed)
After working on this problem for a while now and trying a few roms with black screen on calls, finally found a 100% successful fix for about 10 Atrix i have worked on and so far issue has not returned !!
I know it is a common problem with a lot of roms where when making a call the screen goes black instantly after dialing and the proximity sensor cannot be used to wake the screen nor the volume button and no way to use numbers to choose in call options, meaning literally doing a battery pull to reboot the device.
I tried a few things thinking it helped and for a while did but the issue slowly came back but after some work and patience with the phone got it working properly, here is what i did :-
While making or receiving a call squeezed the whole top end of the phone, in other words squeeze the front and back together clamping relatively hard ( be careful not to crack the screen ) and the screen comes back on enabling in call functions and proximity sensor.
Opened phone up and checked position of proximity sensor and flat cables ( being directly inside where we were clamping in the last section ) and saw that the flat cable with the earphone connector and proximity sensor had moved away from the screen.
On the second flat cable ( the one with the touch pad ) is a sponge sticker ( placed directly on the back of the touch pad connector ) which presses directly onto the back of the proximity sensor and holds it close to the screen, which was pretty flattened, so i put on a new piece of sticky sponge on top of the old one making it thicker, to hold the proximity sensor tight to the screen.
I reassembled the phone ( put the back on and screwed it in tight ) and tried with the calls again, so far everything is great.[/COLOR]
There was also the same problem with some poorly fitted touchscreens, either where it has not been stuck into the frame well enough or the original adhesive become worn out and not sticky enough any more, so i refitted the screens with extra strong double sided adhesive and again 100% of phones with the problem still good !!
If there is a slight gap between the screen and frame it can mis-align the proximity sensor with the holes in the frame and the clear section of the screen needed for light inlet !!
Also as we all know, there are roms / kernels which produce a lot of heat in the handset, this is also a contributing factor, due to the adhesive used in fitting the touchscreen losing strength and the screen slowly moving away fromn the internal frame !!
PLEASE DO NOT TAKE MY WORD FOR GRANTED, I AM ONLY STATING WHAT HAS HELPED ME AND REMEMBER ALL DEVICES ACT AND REACT DIFFERENTLY !
I really hopes this helps you all, if it did please let me know or if you found something different it is equally important that i can try this too and we can really get to the root of the issue together !!!
i know i can stop blaming the roms now and say it's a hardware issue !!
Thanks again to the developers here for the hard work on the roms , keep it up !!! :good:
For anyone who is interested, here is my method for fixing the black unresponsive screen during a call.
Like most of you reading this message I had the dreaded black screen during a phone call, which makes it impossible to end the call or dial numbers for automated systems. A lot of suggestions and fixes included blowing into the upper right corner of the phone or into the ear piece. This doesn't work (or it didn't for me) because the proximity sensor which you are allegedly blowing dust off of is pretty well sealed against the outside world. I'm on firmware 1314, which is supposed to have fixed the issue, but did not.
What did work every time was to pinch the phone front to back at the upper right corner right around where the proximity sensor was. I actually later found out you could pinch the phone anywhere in the upper half and the screen would light up.
I opened up the phone, saw that the proximity sensor just kind of flaps freely with a metal back that touches what i think is a grounding plate on the frame. When you pinch the phone it shorts this circuit and makes the proximity sensor behave properly. To make the contact better I cut a piece of aluminum foil, folded it up a couple of times, and wedged it behind the proximity sensor. Put the phone back together, made a call, and voila - screen on away from my face, off when sensor is covered.
Here is a picture of what the proximity sensor looks like on the pcb. I just wedged the foil behind the circled piece and replaced everything.
http://imgur.com/dAqCBGd
This absolutely works for me, but YMMV. I used the youtube video from le55ons for disassembly instructions. It's fantastic.
Excellent work. Subscribing in case I get this issue in the future
Sent from my Nexus 7 using Tapatalk 4 Beta
Do you have a screen protector installed. I did and it covered the proximity sensor, which gave me issues, took it off, no issues
mikeschevelle said:
Do you have a screen protector installed. I did and it covered the proximity sensor, which gave me issues, took it off, no issues
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I didn't have a screen protector on, but i can see how it would cause a problem if it covered the sensor. Now that it's working properly I can see how sensitive it is. If i hover my finger an inch over the sensor, the screen will go dark.
Making this thread so that something pops up in google for other people searching for help with these issues.
Was unable to get auto brightness to work on my Galaxy S8 - it stayed dim outdoors and was impossible to see. The light sensor was working perfectly (showed change using the Sensor Box app), it just had no effect on the screen brightness.
In the course of things (including having my local Samsung repair centre replace the phone) I eventually worked out that it was my phone case. Specifically, the MAGNETS in it.
I can't post links yet, but the eBay item id of the case I bought is 162444029744 so you can see the sort of case I'm talking about.
When held up against the magnets, auto brightness doesn't work. As soon as you move the magnets away, the brightness instantly jumps to the right level. If I held the back of the phone up to the side of the case WITHOUT the magnets, auto brightness would work correctly.
The magnets in the case ALSO stop the proximity sensor from turning the screen off when held up to your face during calls. Just checked it then - put my hand in front of the sensor with no case, screen goes off. Put the phone against a magnet, screen stays on.
Same problem
I noticed the same with mine. I received a follow-up call from Samsung after having my phone for about 1 week. I informed them of the screen auto-brightness function not working. They told me it's normal. I had to convince them and their technician it's not.
I then backed up my phone and was about to take it in, in 2 hours time, until I saw your post. And yup, I have the magnetic case too. Same problem.
Didn't have that issue with my S6 though. Same magnetic case.
Thanks for the post.
S8 phone case magnet fix - Auto-brightness [SOLVED]
This has been bugging me for weeks ever since I got my case from Wish. Restart the phone and it all works for a moment, then the sensors fail again. Thanks to this post I took my case off and all is good.
I found my particular case has 6 small magnets in the back cover to hold it in my wallet. I removed the lower right magnet (as you look at the back) and both my phone and case are now working properly.
Hope this helps
Same issue, although mine comes from a magnetic car mount (diy).
I was just thinking of getting a magnetic wireless-charging car mount (with the metal ring that goes into the phone case)...
Apart from the auto-brightness issue, did you notice anything else behaving quirky? Was the phone getting hot, or the screen misbehaving, etc... Also, where were the mount's magnets in relation to the phone; I suppose vertically centered?
I'd call Samsung and ask, they should know best, but since it's not the engineers on the phone, but just tech support people, they'll probably just repeat the "only buy our stuff" nonsense instead of giving any useful reply
When my wife first showed it to me it only showed the clock and notification icons in the upper middle of the screen. Pressing the power button only made it brighter or dimmer, but if you held the power button the shutdown menu would come up and you could interact with the menu fine. If you shut it down and restarted it the lock screen would show for a second at which point you could tap and get it to acknowledge a swipe giving you the PIN screen, but you couldn't enter a PIN. After pulling it's SD card and verifying her pictures were on there I factory reset it thinking a software problem, or a run away app eating CPU.
While setting itself up after the reset, around 90% I watched the screen "shrink" to a inch or so square in the upper middle of the screen. What I mean by shrink is, inside the square I could still see a bit of "Android is starting up" and the white background, but outside that was black. That's when I started thinking it thought it was in a case with the cover closed, it doesn't have a screen protector ATM so I cleaned the glass over the proximity sensor, even opened it up and cleaned the inside of the glass for giggles. That didn't help, now when it boots up I get nothing but the backlight of the LCD, I assume because it's waiting for me to finish the setup process, it still will bring up the power off menu and I can shut it down or reboot it fine.
So now I'm trying to figure out, does it have a reed switch somewhere and a magnet in a case cover, or does it use the proximity sensor to see if the cover is closed? If I can figure out how it tells there's a cover over the glass I'll just remove that sensor and be done with it
Thanks,
Beta2K
there's magnet sensor somewhere around front camera
RolF2 said:
there's magnet sensor somewhere around front camera
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Any guesses on which side of the board? I've run across a couple candidate IC's, looking for my loupe's now to see if I can read anything off them.