screen doesn't come back on after call (proximity sensor issue) - Galaxy Note GT-N7000 Q&A, Help & Troubleshooting

Hi. my UK note (baseband N7000XXKK5, 2.6.35.7.N7000XXKKA, CF-root, stock ROM) has recently stopped turning the screen back on after a call (or during a call when I take the phone away from my ear to use the dial pad, go on speaker, etc.).
Normally the only way I can get the screen back is to hold the power key in until the phone reboots (though I've randomly managed to get it back sometimes, possibly when the other party hangs up and/or I'm pressing the power or home keys to try and get it back).
I've turned off the proximity sensor in settings meantime, and calls are fine in that state - but I don't want to waste battery and/or risk pressing stuff on screen with my head/cheek so I'm looking for a fix. Anyone else got this problem or suggestions for a solution?
I used the *#0*# test menu and chose "sensor". This gives a value of 0.0 for proximity until I put my hand within a few cm's of the sensor, at which point the screen goes green, the phone vibrates constantly and the reading changes to 1.0. Once in that state it stays that way when I remove my hand and doesn't change until I hit the back key.
Is the proximity sensor test intended to be a one-shot affair, or should it register 0.0 once I remove my hand?

My galaxy note is having a similar issue, however when I run the sensor test from *#0*#, I observed a different behaviour, where the proximity output says "1.0" and constantly vibrates all the time (which would explain the screen went black when a call comes in even if I put it on the table, as the phone constantly detects something)

sounds like yours is likely a hardware fault then. I ended up just leaving the proximity sensor disabled for calls and I don't really miss it. The only other thought I had was that my front cam has a load of dust built up under the display glass and it's adjacent to the sensor. I wonder if a layer of dust could trigger it?

actually I just re-ran the sensor test and it now toggles between 0.0 and 1.0 each time I move my hand over the sensor - so looks like in my case I have an intermittant problem. At least now I know how that test is designed to work. I will run it periodically to see whether anything specific is triggering my sensor to stop working.

OK, the following steps resolved my problem:
1. Remove microSD card and turn on the unit
2. Goto *#0*#, sensor test and verify that the issue is resolved
3. Put back in the microSD card
4. Repeat step to and now everything should be back to normal
Just rebooting the unit does not help (as I tried this before), but the above steps have fixed my problem.

Related

Screen lighting issue.

XDA-Dev:
I hope this finds you in high spirits and good health. Just a day ago my phone started acting peculiar regarding the lighting of the touchscreen.
Firmware: 1.6 // Build: DRC83 // Rooted: No
Damage: Slightly scratched hard plastic from dropping 2-3 times. Otherwise, outwardly pristine
Upon purchasing the phone, I immediately noticed that the screen would creak if it was pressed on the bottom right hand side (by the send button). The right side of the screen also protrudes slightly higher than the left when in the open position. I have owned the device for about 7-8 months now and have noticed that on the rear, when in open position, there is a scratch where the sliding mechanism moves. The paint is stripped and the underlying metal is displayed in those areas. And now on to the issue at hand:
When the phone is closed (touchscreen only):
- When pressing MENU, or any key that would normally illuminate the screen, this does not happen. The screen stays dim, yet the lights on the buttons bellow it brighten.
- If I slide out the keyboard while the screen is supposed to be on (meaning the buttons are lit up), nothing happens.
When the phone is open (keyboard presented):
- And the screen is off, if I press MENU, the screen comes right up with no brightness issues.
- At this point, if I close the keyboard, the backlight disables itself. The screen is NOT completely blank. If I reflect the light of the room off of it, I can just barely make out that it is indeed displaying whatever task it was that was open, but if I were in a dark room, there would be no chance of recognising what is being presented.
- Continuing from above, once the screen's backlight is disabled and I reopen the keyboard, it does not turn back on. I must turn off the screen and turn it back on for the backlight to resume normal functioning.
One would think that if the issue lies in a loose wire that once the keyboard is extended that the backlight would regain normal functioning. Because this is not happening and that it is only working under certain circumstances, I cannot accurately ascertain whether this is a software or hardware problem.
Attempted remedies:
- Soft reset (both rebooting the phone by powering off and on and by going into the reset menu)
- Hard reset (by going into the reset menu and hitting ALT+W, etc)
Neither of these attempts succeeded in restoring functionality of the backlight. I've also search high and low through the settings, but see nothing other than 'Brightness' under 'Sound & Display.'
It may be noteworthy that I have the paid application 'Power Manager' installed. Though, perhaps not since this issue was still occurring AFTER the factory reset when no foreign applications were installed.
If you require any additional details, feel free to give a reply with any questions. I'm sincerely hoping I don't have to deal with T-Mobile or HTC to have this repaired. Any tips, ideas or possible solutions would be greatly appreciated!
Regards,
Ian
Update on issue:
On the way home from work, as the battery was on it's last leg (less than 10%), I turned off the screen while the device was in the open position after finishing a text. Upon attempting to re-activate the screen, it would not do so. As always, the side buttons lit up, but the screen was blank no matter what I did. I could hear the vibration from receiving texts and the red 'omg I\'m dying LED' was still flashing, so the device had not died.
Returning home, I gave it a reboot by removing and replacing the battery. I've kept it in the open position since it has been plugged in and am quite afraid of manipulating the slide mechanism any further.
I'll be calling t-mobile to get their opinion on any further troubleshooting momentarily and report back.
Sorry for opening an older thread. do you remember what t-mobile said was the problem? i am having the same issue.
simplewhite said:
Sorry for opening an older thread. do you remember what t-mobile said was the problem? i am having the same issue.
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Click to collapse
The ribbon wire in the slide mechanism is either broken or pulled out of socket.

help me please, i have a trouble with my proximity sensor

the proximity sensor not working right for me
when i take a call if i put my phone into my face the screen is off (this is ok) and if i put my phone away from my face the screen should goes back on but it is not. the screen is off for a long time until the people i call with is hang up the screen just on. some time the screen is off for a short time.
Has anyone had any issues with the proximity sensor on the Nexus doing the same thing?
please help me what should i do, now i can't hang up my phone or pick up my waiting call or adding the number etc. because the screen is off while i having a call
i have try to wipe my phone and flash my phone many times but it still the same
Strange. Try checking to see if the proximity infrared led is still flashing after it goes off. Check by starting a call and looking at your phone through a webcam. You should see the proximity light flashing. Then hold it up to your face so it goes off, then check it in the webcam again to see if the proximity light is still flashing.
There could be a hardware problem with the light not coming back on, or not being bright enough or something...
Thank you very much
so what did you do?how did you fix this becouse i have the same problem?

[Q] Call Issues

Hello. I've had this device for awhile now and it's probably the best phone I've ever had.. except I started to have problems with regards to calls just recently. I actually rooted the device about 2 months ago and am currently using the Rombie mod v2 (JPC), if that helps. Anyway, the problem happens in the middle of a conversation, where the proximity sensor somehow disappears and the speaker mode is activated on its own (or maybe it gets in contact to my skin, I'm not sure, since the screen is supposed to remain blank). After that, the device becomes unresponsive: the touch sensitive menu and back keys don't work, and neither does the screen itself..but the hard key home button works and I could still hear the other caller via loudspeaker. I force a reset and everything goes back to normal (I mean this call issue doesn't happen all the time). I don't have any screen protector to affect the performance of the sensor. Anyone can help me out with this? Thanks!

Strange Proximity Sensor Behavior

There seem to be several proximity sensor threads but I've done a search and have not found anyone that is having this same problem.
When I make a phone call, my screen turns off right away. I can only get it to come on by pressing the power button or tilting the phone so that a bright light or glare is on the proximity sensor or light sensor. This is a pain. I use my power button to end calls but I have to disable that option. Otherwise, any time I need to use touch tones for an in-call menu, I hang up or spend a minute tilting my phone or holding it up to a light bulb. I know there are workarounds that I could be using but I am wondering if my proximity sensor or light sensor is malfunctioning or if it is a software issue.
Also, when using the visual voice mail app, my screen goes black but not off. I can still see the status bar. It happens as soon as I tap the play button and works just fine after my voice mail stops. This is likely unrelated but I can't be sure.
Thanks in advance to anyone that helps!
Running stock and unrooted with no physical damage or obstruction of sensors. I have tried a factory reset... twice.
I'm having a weird issue with mine as well. Mine is a little different though. If I need to make a call that requires to enter # prompts and as soon as I move the phone away from my face the keypad will start beeping on the other end so the prompts will always get invalid responses. While on the phone and I move the phone away from my face for any reason, the person on the other end will hear the beeping.
mokash34 said:
There seem to be several proximity sensor threads but I've done a search and have not found anyone that is having this same problem.
When I make a phone call, my screen turns off right away. I can only get it to come on by pressing the power button or tilting the phone so that a bright light or glare is on the proximity sensor or light sensor. This is a pain. I use my power button to end calls but I have to disable that option. Otherwise, any time I need to use touch tones for an in-call menu, I hang up or spend a minute tilting my phone or holding it up to a light bulb. I know there are workarounds that I could be using but I am wondering if my proximity sensor or light sensor is malfunctioning or if it is a software issue.
Also, when using the visual voice mail app, my screen goes black but not off. I can still see the status bar. It happens as soon as I tap the play button and works just fine after my voice mail stops. This is likely unrelated but I can't be sure.
Thanks in advance to anyone that helps!
Running stock and unrooted with no physical damage or obstruction of sensors. I have tried a factory reset... twice.
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Click to collapse
It sounds like your issue is hardware related. Take it to a sprint repair store and have it exchanged.
mrwicked said:
I'm having a weird issue with mine as well. Mine is a little different though. If I need to make a call that requires to enter # prompts and as soon as I move the phone away from my face the keypad will start beeping on the other end so the prompts will always get invalid responses. While on the phone and I move the phone away from my face for any reason, the person on the other end will hear the beeping.
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Click to collapse
You issue also sounds hardware related. The touchscreen sounds like it is going out. It might be the dialer app but I doubt it. Speaking from experience of course.
I went to Sprint store yesterday and they gave me a replacement for mine.
insuusvenerati said:
It sounds like your issue is hardware related. Take it to a sprint repair store and have it exchanged.
You issue also sounds hardware related. The touchscreen sounds like it is going out. It might be the dialer app but I doubt it. Speaking from experience of course.
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Click to collapse
Thanks I will head to a store and follow up here for anyone else. Thanks again.
I would check the sensor settings and play around before trying the store. But if that doesnt work it prob is hardware issues

Black screen after call - growing tired of this phone

Does anyone else have this issue? It's really driving me crazy to the point where I feel like ditching the Nexus 6. It's not even every call, but it is enough to annoy me. Pull the phone away from my head and the screen wont wake up. All I can do is long hold power to force a reset. It's really annoying. I've tried the proximity fix for 5.1 but it still happens. I can't set "power to end call" because also sometimes the phone doesn't wake the screen when there is an incoming call so I have to press power to wake the screen to see who it is.
Does anyone have any idea how to get around this other than the two solutions above? This has happened on both my devices (Original and RMA) and I just can't take it any more.
I sounds like a faulty proximity sensor. And I've observed intermittent behavior like this on previous phones (but not my N6). You can test this with a number of apps. I've used "Sensor Box for Android", but there are several more. Prox sensor is located near the top LH corner. With the app open and on prox sensor, passing your hand over it should register on the app.
You are so active on this forum that I won't even ask about a screen protector....
The proximity sensor seems to work fine under all tests that I have done. I actually use Tasker to utilise the proximity sensor to set ringer volume based on whether it is activated or not (eg in my pocket, proximity sensor CLOSE, set ringer high).
Its not every call either and multiple Nexus 6 devices have had this issue for me too. Proximity sensor works in every test
That's weird. I've had no issues at all. I assume you have the issue on the stock ROM too.....
I suppose I'll have to test though I don't really want to run stock.
What about disabling Tasker and trying it out.
Happens with or without tasker. It's pretty much always done it since 5.1
There are known issues with the prox being flaky on this device. I just need to find a way to overcome this.
Remember, we need to separate problem solving from the idea of how we want our phone to look and perform. Once you've identified the root cause, you can then decide what steps you want to take to solve it.
*Sigh* Yes I know. But it's so intermittent I won't know if it solves it for a looooong time. It would be quicker to return to stock, sell it and buy something else
I've literally never ran stock on the nexus 6.
Like Camera indicated, I'd try removing the screen protector if you have one and see if it's better.
It's not a protector issue.
Let's assume I've done all the obvious things except flash stock
Edit. I'm going to try and use power button ends call. Just to see of its an active call that causes it.
Hopefully it will happen when I can take a log cat but inise the phone very rarely.
Try this app in the Playstore.
https://play.google.com/store/apps/details?id=com.vorlan.screenoncall.free
I had a similar issue where the screen would time out while I was on a call and wouldn't wake when I moved the phone away from my face. I had to hit power button to wake phone and enter pin just to end a call. I make/recieve over 100 calls per day and it was getting old til I found this app. Works perfectly every time.
Thanks but that's not the same issue. Mine will not wake at all. I have to force a reboot to get display
You might give the app a try just to see. It keeps the screen on during a call but the proximity sensor still shuts the screen off unless you are on speaker phone. It may not work, but worth a try to keep your N6!
I've seen the same thing with my N6, display goes black (randomly, not even related to a call) and the only thing I can do is reboot. Haven't wasted any time looking for a solution, 'cause I don't think there is an easy one and there is no way to know if something you try is even going to work! I just reboot and move on.
Just posting to let you know you are not crazy and there is someone else out there with the same problem!!!
I'm not sure what you mean. I've been recommended this app before but I don't like the idea of mybscreen being on.
What do you mean it keeps the screen on but proximity still shuts it off? .
Thanks for confirming
Basically it doesn't let the screen timeout. Proximity sensor still functions like normal.
I would try it and see.
If it helps good, if not no harm. It definitely fixed my issue, even if my issue wasn't exactly what you're experiencing.
Well power button end call didn't help. I don't think it is a proximity sensor issue. Let's hope it happens when I can get a logcat. Unlikely. Maybe a job for tasker.
I had this issue too. I eventually thought it was tied to UV, but then I installed all stock and didnt change anything and it still happened. Maybe a bug in lollipop.

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