Question OnePlus BlackScreen after PhoneCall - OnePlus 9 Pro

Hi,
I have a problem with my OP 9Pro.
After a phone call, the display sometimes stays black and it takes a while before you can use the device again.
Does anyone else have that and, above all, how can I solve the problem?
Many greetings and thanks
Mars

Are you on OOS12? I only experienced that bug in the short time I ran OOS12. One of the main reasons I reverted to OOS11 actually.

Yeah I get this too. From what I can tell, it seems to have something to do with the proximity sensor killing the screen when you put it up to your ear, then hanging when the call ends.
OOS11

Me too. On 11. Thinking it may be from Nova or Adguard. Until I figured out that I could hit the "screen on" button to regain control I would wait till the other person hung up. So, as a workaround that's what I do, hit the button.

That happens when the proximity sensor it's being blocked. If you have any screen protector over the camera notch (where the proximity sensor is) then that's why it's turning the screen off.
If you don't have anything covering the sensor then try making a call on another app (like WhatsApp) to see if the issue persists there too. If not then it might be the dial app, try restarting your phone.
If it happens on many messaging apps, and there's nothing covering the sensor, try downloading a sensor tester app to see if the proximity sensor is being triggered all the time. If it is then it's a hardware issue and you'll have to return your phone a get a new one.

chetqwerty said:
Me too. On 11. Thinking it may be from Nova or Adguard. Until I figured out that I could hit the "screen on" button to regain control I would wait till the other person hung up. So, as a workaround that's what I do, hit the button.
Click to expand...
Click to collapse
Power button is unresponsive when the phone goes pitch black. Even switching the alert slider to something different doesn't trigger the fingerprint sensor on.
I'll try disabling pocket mode. I also found positive feedback about this when you enable the "Override force-dark" setting in Developer Options. See if that helps.

Has been happening to me from time to time since A12. I just hold volume up, volume down and power button at same time and reboot to recovery and restart from there. That fixes it really quick for me.

Yes, I'm on A12 because I thought it would get better here. But I had the same problem with the A11.
I haven't managed to solve the problem yet.
It also happens on Android 11 but it's not quite as bad here. The display turns on after a little while.
Where is the sensor actually? It's not the camera. It's to the right of the speaker. or?

Hi, Guess!
I got a solution from the Oneplus team. (1800 202 8888) / general phone tech support team helped me with these steps:
1- under setting search reset
2- click on Reset all settings
3- Reset all settings. click it.
As this is a normal reset will not lose your data.
The last option is if this doesn't work then we have to backup all data from the phone and do a factory reset.
or it's a hardware issue.
e-regards!
Piyush Sahni

Related

Possible SOD issue...

Hey guys so my Tilt 2 has been having an issue when I put it to sleep. It goes to sleep fine, but when I wake it up the screen remains black. The actual device turns on, but the screen stays black. I can still make calls, receive calls, play music, etc. but I have to soft reset the device if I want to be able to see what I am doing.
From what I can tell my problem is different from the normal Sleep of Death issue where the device simply won't wake up.
I've searched through the forums looking for solutions and have tried pretty much everything from doing a hard reset, using different roms, formatting the internal memory, etc. Even after doing all of this, my device still suffers from this issue.
Any insight into my problem would be greatly appreciated!
I assume you've tried a simple reset using the reset button or pulling the battery out and putting it back in?
Aaron McCarthy said:
I assume you've tried a simple reset using the reset button or pulling the battery out and putting it back in?
Click to expand...
Click to collapse
Yeah every time I the screen goes black I soft reset it in order to get the screen to turn back on. The problem is that the issue persists through soft resets. I currently can't suspend my device because I can't get the screen to turn back on...
hold down the volume down button and then press the reset button (the physical reset button) this should bring you into your bootscreen the multicoloured screen.. if you can get there then you can flash a new rom on your phone... and thats a whole other ball game. It gets a lot of hype as being hard but its really super easy to do if you just follow the directions.
Tilt 2 dark screen solved
With the tilt 2, if the screen does not wakeup, but you can answer the phone, hear music, etc..., it is a malfunctioning light sensor, maybe hardware, or software related (drivers), but it is fixable. Just eliminate all calls for use of the light sensor.
I had this problem and took quite a while to figure it out, as there are several apps that poll the light sensor that cause problems.
First, go to start/settings/system/power/backlight and uncheck the auto adjust backlight option
Second, go to start/settings/personal/buttons/backlight and uncheck the enable keyboard auto backlight sensor.
Last, open advanced config (need to download and install from touchxperience.com, if you do not have it), tab to light sensor and set light sensor polling to disabled.
Now, my phone works normal and will wake up properly from standby like it should. this all seems hardware dependant, as I have in my family 3 of these things and I dropped and broke mine, so bought a new one (4th in the series) and it had the SOD issues, but could restart with softrest. Took me the better part of the day to find a reliable fix, but now all is well again.
Hope this helps other Tilt 2 and similar issues.

Please Help: When making call screen wont come back on

Note 2 Verizon Rooted. Two weeks ago my phone started this. When ever I make a phone call, the screen cuts off. The problem is it wont come back on until the call has ended. Now if i reach someone this isnt a huge issue, but if I have to deal with an automated system, or get someones voice mail i Have to do a battery pull. Does anyone know what is going on? Please help.
Try to clear data of phone app.
Sent from my GT-N7100 using xda app-developers app
Same Problem
I had the same problem, I found it was the cover I had on my phone that prevented the phone to go back on during a call.
This is a problem related to the proximity sensor. It's something very hard to clean so I just disabled turn off screen during calls option. Just go to your dialer press menu button then click call settings you should see turn of screen calls option, disable it.
Your cheek probably touch to screen and press random buttons when you're on the phone so remember to turn off your screen by on off button so you dont touch buttons with your cheek.
Hope that solves your problem
edit: I found that sometimes blowing through the speaker makes proximity sensor work correctly for a while. It's not a practical solution though.
Equal1zer said:
This is a problem related to the proximity sensor. It's something very hard to clean so I just disabled turn off screen during calls option. Just go to your dialer press menu button then click call settings you should see turn of screen calls option, disable it.
Your cheek probably touch to screen and press random buttons when you're on the phone so remember to turn off your screen by on off button so you dont touch buttons with your cheek.
Hope that solves your problem
edit: I found that sometimes blowing through the speaker makes proximity sensor work correctly for a while. It's not a practical solution though.
Click to expand...
Click to collapse
Thanks for the information everyone! I busted the screen a few months ago and assume that's whats causing it. I just didn't think that was it because it hadn't been a problem until well after I busted it. Ill disable this option and that will take care of it for my needs.

Screen Goes Black When Using Phone in N Dev 3 Preview

I'm having an issue when making or receiving a call. The screen goes black. Same thing happens if I use Hangouts to make a call. Maybe it's my phone. Never had this problem on MM. And no issues when I use the S7.
It's has something to do with the proximity sensor. When you end a call or want to end the call, lock the phone then unlock it. That should let you unlock the phone with the screen on and end the call. There's no real fix besides not being on the dev preview. Actually you might be able to turn off the screen turning off during the call but I'm not sure.
jhtfarquhar said:
It's has something to do with the proximity sensor. When you end a call or want to end the call, lock the phone then unlock it. That should let you unlock the phone with the screen on and end the call. There's no real fix besides not being on the dev preview. Actually you might be able to turn off the screen turning off during the call but I'm not sure.
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Click to collapse
Tried that with no luck. Only way to get out of the black screen is to double click power to get the camera app to appear, then close it.
bostonirishguy13 said:
Tried that with no luck. Only way to get out of the black screen is to double click power to get the camera app to appear, then close it.
Click to expand...
Click to collapse
That's weird. I've never had it where I had to go to camera. Check to see if you can turn off the proximity sensor. Honestly that issue was why I stopped using the dev preview and swapped back to purenexus.
Ended up flashing back to MM. Tried everything possible to get it to work.
Downloaded the N Dev 3 preview twice (in case of a bad DL).
Tried flashing manually via fastboot twice.
Clean flashed MM then flashed N Dev 3.
Clean flashed MM then took the OTA.
Every time, the same issue happened. Screen went blank when making/receiving a call. Locking the phone by hitting power button didn't work. Sometimes the double click to camera would. Usually needed to power off.
I was having the same issue, I hope in the next release the issue get fixed
I mas with this problem and I just change the screen protetor film

Screen not turning on sometimes

Has anyone has an issue where the screen won't turn on after using the fingerprint sensor? I can feel it unlock but I sometimes have to hold the power button until the power off/reboot menu comes up which then starts the display up from being all black. Have Magisk beta and Xposed installed so maybe that's the issue?
Not So Pro said:
Has anyone has an issue where the screen won't turn on after using the fingerprint sensor? I can feel it unlock but I sometimes have to hold the power button until the power off/reboot menu comes up which then starts the display up from being all black. Have Magisk beta and Xposed installed so maybe that's the issue?
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Click to collapse
Is AOD on or off? What happens when it's on?
Badger50 said:
Is AOD on or off? What happens when it's on?
Click to expand...
Click to collapse
AOD is on. So what happens is if the phone is on my desk and AOD is showing time, it'll show the notification briefly then just go black(nothing is covering proximity sensor and notification light is blinking). I then usually have to either do the power menu trick I mentioned or just restart the phone. If it's in my pocket on the other hand I'll pull it out and it'll be black with a notification light.
Oddly enough it usually only occurs with Snapchat so I think it may have to do with having snaptools installed?
Not So Pro said:
AOD is on. So what happens is if the phone is on my desk and AOD is showing time, it'll show the notification briefly then just go black(nothing is covering proximity sensor and notification light is blinking). I then usually have to either do the power menu trick I mentioned or just restart the phone. If it's in my pocket on the other hand I'll pull it out and it'll be black with a notification light.
Oddly enough it usually only occurs with Snapchat so I think it may have to do with having snaptools installed?
Click to expand...
Click to collapse
Quite possibly so. I know nothing about snap face, snap chat, or whatever these social media apps do. Although, you may try clearing the app data and cache on said app to see if it helps. No guarantees though. As is the case with many things android! ??
I've had the same issue ever since I installed, I believe, the nav bar immersive mod. Not sure, around same time. I was able to hurt power button twice for camera and that would pull it up and u could switch back to screen. I don't have xposed or Snapchat, so I don't think either of those are it. It's random when it happens to me.
I've had similar issues. I'm not rooted and have never used Snapchat or AOD. I do use immersive mode for some apps so I've thought that might be causing it. Like stated above, I can get the screen to come on my double tap to open the camera or just holding the phone face down and tap the back a couple times then flip back over and the screen comes on.
I'm also having this issue. Ambient display seems to prevent the issue for me. If I reboot the issue is gone for a period as well. Not rooted but have immersive mode acrive via nav bar hider.
shmity said:
I'm also having this issue. Ambient display seems to prevent the issue for me. If I reboot the issue is gone for a period as well. Not rooted but have immersive mode acrive via nav bar hider.
Click to expand...
Click to collapse
Ok so a little more testing. When Ambient display is set to always on, I have no issue, maybe a slight lag when waking/unlocking. When ambient is set to tap or pick up i get issues, when ambient display is set to off at all times, i have no issue. Plugging the phone in to charge seems to force the issue to happen.
Edit: Seems that even with ambient display off totally the issue pops up. Strange thing is if i unlock the phone and take a screen shot, its totally black.
I to have this happen and like sportytony I use camera to wake device. Sometimes that too takes a bit. Most of the time when it finally does wake there will be a notification that systemui isn't responding. So I wonder if it's related.
Ok, I've been having this issue happen multiple times a day. I use this immersive app: https://play.google.com/store/apps/details?id=in.tsdo.elw
Since I have turned all ambient display options off and made sure that System UI is unchecked in the immersive app i haven't had an issue at all.
Its definitely related to system UI, com.android.systemui to be precise
i used to try to set up Power Nap on this device, but it can't find System UI in app list, make me unable to whitelist it, thus causing same issue like yours,
Screen wont turn on after sleep, since System UI wake up is blocked
I was using hide navbars and had this issue
I uninstalled and never had that problem again
Sent from my Google Pixel 2 XL using XDA Labs
Didn't expect all these replies but I'm going to try to untick system UI and see what happens. Thank you all!

Is anyone facing an issue with the proximity sensor in OnePlus7T

Ever since I've bought OnePlus 7T, the proximity sensor is giving me a lot of problems. Sometimes the screen lights up while I'm speaking on the phone and the speaker is activated. Sometimes the call gets recorded. Sometimes if the phone is in my pocket and I try to unlock it, it says too many attempts.
Yes it very annoying, when removing it from pocket accidently my fingerprint matches and something something happens.
vinay3190 said:
Ever since I've bought OnePlus 7T, the proximity sensor is giving me a lot of problems. Sometimes the screen lights up while I'm speaking on the phone and the speaker is activated. Sometimes the call gets recorded. Sometimes if the phone is in my pocket and I try to unlock it, it says too many attempts.
Click to expand...
Click to collapse
It's issue on most OnePlus phones.. I had the issue on 6T, 7 Pro.. annoying
1rahul1996 said:
Yes it very annoying, when removing it from pocket accidently my fingerprint matches and something something happens.
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Click to collapse
This is the biggest reason I may be going Pixel 4...
Yes I too have this issue with my OP7T
Yup, same issue here.
Another thread about it here - https://forums.oneplus.com/threads/proximity-sensor-doesnt-work.1147600/
Also issue present on OP7Pro forums.
Seems to be related to this "Virtual Sensor":
https://www.ellipticlabs.com/2019/0...eaner-design-to-oneplus-7-series-smartphones/
So we have to wait and hope (could be this same as Never Settle? :d) that can be fixed with a software update.
It seems to get worse the more I use my phone. Anyone else notice this? Brand New it never did it
Josh McGrath said:
It seems to get worse the more I use my phone. Anyone else notice this? Brand New it never did it
Click to expand...
Click to collapse
Someone on the OP7T forum suggested it may be Tap the Screen to Show (let's call it TSS) feature.
I enabled DTW. This will trigger Ambient Display -> "Tap the Screen to Show" to be disabled.
Tried and the screen still won't turn off when on a call with the phone on my ear.
Both options disabled (no DTW and no TSS), still won't turn off.
What did work though, was to turn off screen once with the power button:
- I was in a call and the screen was on,
- turned off the screen using power button,
- I took the phone off my ear -> Screen on
- put the phone back on my ear -> Screen off
Maybe someone can make more sense of it.
trveller72 said:
Someone on the OP7T forum suggested it may be Tap the Screen to Show (let's call it TSS) feature.
I enabled DTW. This will trigger Ambient Display -> "Tap the Screen to Show" to be disabled.
Tried and the screen still won't turn off when on a call with the phone on my ear.
Both options disabled (no DTW and no TSS), still won't turn off.
What did work though, was to turn off screen once with the power button:
- I was in a call and the screen was on,
- turned off the screen using power button,
- I took the phone off my ear -> Screen on
- put the phone back on my ear -> Screen off
Maybe someone can make more sense of it.
Click to expand...
Click to collapse
I tried the above also same thing. I am tired of this BS. I am constantly pressing hold or dialing with my face unless I have the phone shoved in my ear. I almost didn't buy the 7t cause of this issue coming from the 6t with the same issue
Josh McGrath said:
I tried the above also same thing. I am tired of this BS. I am constantly pressing hold or dialing with my face unless I have the phone shoved in my ear. I almost didn't buy the 7t cause of this issue coming from the 6t with the same issue
Click to expand...
Click to collapse
Yeah, I am starting to remember good ol' days with the OPX. Every OTA was fixing one thing and breaking 3 other.
At that time I said no OP again, but still, this one seems to be be a good phone. Time will tell.
Coming back to our issue, I am puzzled that only a few people reported this.
Are you guys are on stock kernel or something custom?
I don't think I have this issue, but the sensor seems to function a bit differently from what I'm used to. When the phone is horizontal, covering the sensor does not turn off the display. But now do the motion of raising the phone to one's ear, and the display turns off. Just an observation, yet to experiment properly.
Does anyone know where the sensors are located on this phone? Is there a picture on the internet that points out the different sensors?
Edit: Yep. This one has a virtual sensor. It works differently.
roofrider said:
Are you guys are on stock kernel or something custom?
I don't think I have this issue, but the sensor seems to function a bit differently from what I'm used to. When the phone is horizontal, covering the sensor does not turn off the display. But now do the motion of raising the phone to one's ear, and the display turns off. Just an observation, yet to experiment properly.
Does anyone know where the sensors are located on this phone? Is there a picture on the internet that points out the different sensors?
Edit: Yep. This one has a virtual sensor. It works differently.
Click to expand...
Click to collapse
Not rooted, but using a custom dialer as the default Phone app (True Phone).
When I switched the default Phone app to Oneplus App, I could not reproduce the issue.
Testing for a few days to see if this works. Would be such a pity if the app is the problem because I really like it.
Also I just sent a log to OP support (they contacted me after I logged the issue on the feedback).
Yes, it is using the virtual sensor as you said (link in my previous post).
How does the virtual sensor work?
Sent from my [device_name] using XDA-Developers Legacy app
I couldn't find anything concrete on how this software-based proximity sensor, Elliptic Labs INNER BEAUTY, works. The keywords are: ultrasound, sensor fusion, and machine learning. A hardware-software I guess.
The 7T does have an IR sensor under the display, but I think this is only used for DT2W and Tap to Show to prevent the display from accidentally turning on when the phone is in the pocket and so on. Not for calls.
Fully Unmodified phone - same issue here. Phone regularly turns on airplane mode while I’m on a call cause it is registering face touches. Screen regularly flickers while on calls as if rapidly moving away from my face....
This was not a problem on my 3t a while ago and the issue is driving me to switch phones alongside some software instability (random lag and keyboard jitter) (animation issues after launcher swap) (soft-lock on navbar or gestures but not a play store replacement)I usually fix by rom swapping on one plus phones andddddd twrp is dead (for now) and no ones working on a valid replacement.
Will be keeping this phone in hopes of twrp eventual return, but need that stability
igotlostintampa said:
Fully Unmodified phone - same issue here. Phone regularly turns on airplane mode while I’m on a call cause it is registering face touches. Screen regularly flickers while on calls as if rapidly moving away from my face....
This was not a problem on my 3t a while ago and the issue is driving me to switch phones alongside some software instability (random lag and keyboard jitter) (animation issues after launcher swap) (soft-lock on navbar or gestures but not a play store replacement)I usually fix by rom swapping on one plus phones andddddd twrp is dead (for now) and no ones working on a valid replacement.
Will be keeping this phone in hopes of twrp eventual return, but need that stability
Click to expand...
Click to collapse
Twrp is out for the 7t. It's not flashable last I checked but it is bootable and usable for what I used it for which was a backup of stock rom

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