Black screen on calls / proximity sensor not working ??? - Atrix 4G Q&A, Help & Troubleshooting

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:

Related

Typing with phone on flat service fault?

Wow. Just noticed something really odd with the keyboard/screen, but then it could be my phone!
If put your phone on a flat surface (ie table) - try type some letters on the right/left/bottom edge - i find it not as responsive as if you typed in the middle part of the screen. But if you hold the phone in your hands, its perfectly fine!
Anyone else getting that weird problem?
Yep
Noticed the problem to.
I'm guessing there is some screen sensitivity changes when it knows its flat on a surface.
I guess its another on the list of things to fix when the release a new build (or some devs release soem cooked ROMs).
I wonder if this is related to the capacitive nature of the touchscreen? I can replicate the effect if the phone is flat on the surface and I'm only touching it with my typing finger. However, if I rest another finger on the device, or hold it lightly by the edges (still sitting flat on the surface) it works fine.
If this is the case, I doubt any rom will be able to fix it since it is likely to be the capacitive touch screen technology and not a software "fault" per se.
Regards,
Dave
I have seen this too. I wondered if it was a perspective thing - are you pressing the right part of the screen?
are you pressing the right part of the screen?
Click to expand...
Click to collapse
Oh yeah, looks like I am pressing the right part. It just have to be more firmer pressing those edge buttons. It doesn't matter which way the keyboard layout is.
Anyway, thanks to everyone confirming that you got the same problem. I would have thought it was hardware related, but it could be software related I suppose. Perhaps whatever software is trying to rotate the keyboard is having a hard time to work out what direction to show the keyboard is causing that weird problem
Try holding the phone between thumb and forefinger whilst it is on a flat surface and then typing. If I do this, I have no issues, but the second I remove my fingers, I then get the lack of response for the keys on the bottom row of the device.
Regards,
Dave
mines the same may be to avoid key presses in your pocket?
I have the same problem too. It isn't a problem with all capacitive screens as the iphone never used to do this (l know, I know)
So far I've found no solution, let's hope it gets a quick fix
wow, and I thought it was only me, when I put the phone on the desk, and try use my fingers it becomes really unresponsive but when I'v got it in my hand and I'm using my thumb its all fine, hmmm really weird
it's not really a fault, but more of the nature of the capacitive screen and/or software. In comparison with the iPhone, the iPhone's capacitive screen lets you type/navigate with the phone lying on a flat surface. I find that the Hero's screen requires you to apply a tiny bit more pressure and more surface-area of your finger/thumb, for it to respond. I hope HTC somehow tweak the software for this to be more responsive with less pressure/surface-area contact required so it is usable on a flat surface - don't always want to be picking my phone up to use it at work.
i confrim, using hero without touch the metal edge result in less responsivity and difficult on multitouch operation
hope new firmware can solve this, too many errors using it like a normal keyboard on a table!
Noticed the same problem when using the Hero in my In Car Holder. Makes data input into CoPilot very difficult indeed.
A couple of observations...
I actually have mine in one of those Silicon Covers - the new style 'Gel' ones (work really well and looks good too, unlike old Silicon ones). So it's not actually about having contact with metal as such.
Problem does not occure when plugged into USB.
Now this bit could just be perception rather than reality, but I tried typing while flat (USB disconnected) when touching the coated surface around the trackball and it did not seem to improve things. Trying to do the same while touching the metal area around the speaker grill did seem to improve things. You guys observing similar ?
Anyway, I'm hoping that when I have my car charger, it will fix my CoPilot problem since this should be the same as having the USB plugged in.
Zuber

[Q] Screen turns off when i dial someone

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.
Click to expand...
Click to collapse
cbadk said:
Thanks!
I will return it tomorrow, since im not ready to open it after 20 days of use
Click to expand...
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.

How I fixed my problem of the unresponsive black screen during calls.

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
Click to expand...
Click to collapse
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.

Galaxy S8 Auto Brightness problem [solved] and proximity sensor

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

is it possible to reattach glass screen coming loose?

So the other day when I attempted to fix my G5 (a double failure as replacing the powerbutton didn't fix the fingerprint issue and the GPS hack didn't work either) I ****ed up in the part where when you are opening it up and you are using picks to separate the back from the front and on the lower left I managed to partially separate the glass from the screen a little. The screen itself is still working fine but in the dark you can see light bleeding from the edge where it got separated and upon closer inspection you can tell its sticking up a little. I was going to give the phone to my kid, but since I'm sure even a little drop of rain on the phone will now ruin it, I'm wondering if there's a way to restick the screen without replacing the whole screen/digitizer assembly.
Sure buds my brother is having the same issue. Watch this video (https://www.youtube.com/watch?v=xi3YD9SN4aM) and it should give you an idea of how to fix it. I'd personally pull it up a little and dab a tiny amount of glue around the edge of the lose area.

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