Question Proximity sensor problem or other - Redmi 9 Power / 9T

Hello everyone for a long time it happens to me on my Redmi 9, that as soon as I start a call or receive a Whatsapp message the screen remains black, to activate it I have to pass my hand over the proximity sensor, I tried to activate the function in touch but this creates another malfunction as to unlock the screen I check "Do not cover the area of the headset", has anyone ever tried how to solve?
Thank you

I have the same problem

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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] Nexus turns screen off when receiving a call CM12.1

Hi Everyone,
Whenever I'm on my phone, my screen turns off the moment before its starts vibrating for a phone call, and it takes approximately 6-7 seconds for it to turn back on. This did not happen on stock software, but has been happening since CM12 and still occurs on CM12.1. I don't think its my proximity sensor as this does not happen during a call, only when receiving a call.
HungrySage said:
Hi Everyone,
Whenever I'm on my phone, my screen turns off the moment before its starts vibrating for a phone call, and it takes approximately 6-7 seconds for it to turn back on. This did not happen on stock software, but has been happening since CM12 and still occurs on CM12.1. I don't think its my proximity sensor as this does not happen during a call, only when receiving a call.
Click to expand...
Click to collapse
I am having the exact same problem. I thought it was the proximity sensor due to the fact that I recently had my broken screen replaced. I can use the volume key mod to end a call but cannot pick up a call. Very discouraging..
Yes, can confirm on nightly 01052015, but apparently it's a stock issue as well: htt ps://product forums.google.com/forum/#!category-topic/nexus/nexus-6/mIRwBP4Hx_Y%5B1-25%5D
Do you have a screen protector on your screen as well? I found out that for me tapping on the proximity sensor wakes up the screen with a bit of luck.
souljack said:
Yes, can confirm on nightly 01052015, but apparently it's a stock issue as well: htt ps://product forums.google.com/forum/#!category-topic/nexus/nexus-6/mIRwBP4Hx_Y%5B1-25%5D
Do you have a screen protector on your screen as well? I found out that for me tapping on the proximity sensor wakes up the screen with a bit of luck.
Click to expand...
Click to collapse
I do have a screen protector on but its no where close to the sensors/camera. This issue only occurs when I'm in CM12/12.1. I have the double tap screen wake feature turned off. I gotta press the power button twice and wait for a few seconds for it to work.

Activate proximity sensor during call in my app

I'm developing app for WiFi calling.
I want to turn off screen when proximity sensor reports "near". It work fine on other phones but on S10 phone looks like proximity sensor is not even activated - there is no white dot blinking on top part of the screen.
If I make normal call or use WhatsApp dot starts blinking as soon as I start the call.
So what do I have to do in my app to make that white dot blink on Samsung S10 phone?
I'm not quite sure, but there seems some kind of known issue with the proximity sensor that dates back to at least March. Screen coming on while in your pocket, screen not lighting up when pulled back from your face during a call, screen randomly coming on while on a call, despite it being pressed against your ear/face. I've tried everything suggested and the issues remains, unfortunately I'll be returning my S10+ and going back to my S8+, pretty disappointing for a $1,000 phone.
It's always recommended to do a factory reset after an update, problems happen not only on Samsung, even on iPhones, not a big deal.
Try this?
https://forum.xda-developers.com/showthread.php?t=2568003
TheNurd said:
I'm not quite sure, but there seems some kind of known issue with the proximity sensor that dates back to at least March. Screen coming on while in your pocket, screen not lighting up when pulled back from your face during a call, screen randomly coming on while on a call, despite it being pressed against your ear/face. I've tried everything suggested and the issues remains, unfortunately I'll be returning my S10+ and going back to my S8+, pretty disappointing for a $1,000 phone.
Click to expand...
Click to collapse
During normal phone call my sensor works as it should.
I just don't know how to activate it in app that I'm developing.
On all other types of phones this is not a problem, since this sensor is always on. It is just S10 series that have some kind of special sensor which have to be activated. You can see white dot (left form the front camera) blinking during call... that means that the sensor is activated.
The only other app I saw apart from phone app that can activate this sensor is WhatsApp. It activates it during call or during listening to voice messages.
I also checked Google Duo, Messenger Lite and Linphone app and none of these doesn't activate sensor. So it must be something that WhatsApp knows and others don't.
I also asked this on WhatsApp support, but I was ignored of course.
Do you find how to activate it? I have the same problem in my app and it looks similar on new Samsungs (I find it out on Galaxy Note 10)
Thanks for replay.

Disable proximity sensor

Hi,
I own a Redmi Note 9 (MIUI 12.5.1.0 (RJOEUXM)) and I have a problem with the proximity sensor.
I can't tell if it's the same problem as everybody (due to MIUI) or it's due to some 50 cm fall on a wooden surface (phone inside original silicon cover).
My question is this:
How can I disable this sensor, if I don't have the option in the 'incoming calls' menu?
Is there another way? A key sequence or code or something?
Thanks for sharing info!
PS
Behavior of problem:
1. When phone ringing at incoming calls I don't get the full screen anymore. I have only the short version of incoming calls on the top of the screen.
2. When answering the phone, my screen goes dark and can't see anything, can't bring the light back on, double tap or main right button won't wake the screen up.
3. In the CIT tests, I get 0.0 reading on the sensor. Only in one position, with the front camera in full sun, I get 5.0
4. When the phone is locked, double tap on screen does only a quick flash to show the screen and then goes back dark.
Pocket mode is disabled.

Question Proximity sensor issue

Hi all,
I am facing serious issue on my redmi note 10 pro,
Whenever i make a call the proximity sensor ( idk whether it really has one or not) works fine and when i have to hang up the call my screen doesn't turn on . It goes all Black, no response from the buttons or fingerprint sensor ,
i sometimes need to force restart the device.
If anyone could help will be thankful.
I am having the same Problem here.
Try changing always on display theme or try disabling always on display completely. Doing that solved my issue.

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