Redmi note 8 pro sensor issues - Android Q&A, Help & Troubleshooting

I just bought a new Redmi note 8 pro 7 days ago
Right now I am having an issue with my proximity sensor
Its not working properly..
Whenever I call someone my screen turns black.. No. Matter whatever i do it stays black...
Then i have to force restart my phone to cut the call..
Kindly help regarding this issue..
Tried each and every thing, changed glass protector, cleaning and tried different apps.. I did everything I could do..
I'll be grateful if anyone solves my issue..

Same issue here. Did you find a solution? Thanks.

I think some issues are there in the new updates itself.. i am also using the redmi note 8 pro and my proximity sensor also has some problem, however i don't have to force restart my phone. The thing with my phone is.. my proximity sensor does not work properly.... i believe the screen should be off when i am talking in the phone with the phone on my ear.

Related

Replaced display blinking on my Redmi Note 3 Pro

Hi. I've broken the display of my Redmi Note 3 Pro. I've bought a new one on Ebay and I've changed it but the new one blinking every 2 seconds. I've tried to reconnect the old broken one and it works without blinking.
The strange thing is that the new one blink only when start the system. It works well in recovery or on fastboot mode. I've tried hard reset, tried to change from global to china rom etc. but nothing changed.
I attach the video of my defective display: https://goo.gl/photos/PBCdbPYzfieruRtA8
And the broken one that not blink:
https://goo.gl/photos/DZLSSw3JjETyuJQr7
Anyone know why it happen and in what way can I fix the problem? Thank you
i have the same problem any solution yet?
i have got same problam
i recently changed the screen and problam was presist just remount finger print sensor flex restart phone and it works good this is a problam with latest miui if fingerprint is not mounted phone blinks

Redmi note 3 pro(kate) proximity sensor problem

Hello.i have a rn3p the Kate version and the proximity sensor has been buggy.sometimes it needs a restart to work.othertimes it needs calibration but after a restart it loses the calibration settings.anybody else experienced this problem?I am running 8.1.1.0 stable
I think its a bug with sensor driver or something, i have being doing what i saw somewhere as a suggestion to reduce the fail rate, which was to reboot the phone on a area with nice light (or point a light to the phone) and keep it until the phone finish rebooting, after you can calibrate it.. if you feel too, it still hangs a bit after calls (started to use power button to turn off the call) but pocket issues (when it is not in the pocket) are less frequent( tbh didn't had any after i started to do this)

Screen doesn't work when wake up after sleep, screen replaced

Hi guys,
I have a Redmi Note 4 Snapdragon with a screen replaced recently. The problem is the screen only works after the phone is booted, if I let the screen turn off, it can't be waken up again. There's still backlight, vibration and all and I still hear sound. Which means the touch does work, only the screen doesn't display anything, just black. What can be the cause of this? Thanks everyone!
I have exactly the same problem on a Redmi Note 2. And this problem is not so rare because i found a few posts with same symptoms but i cannot find a fix. If you please find, please let me know.
Can I ask you something cause I'm a technician and I face similar problem not exactly the same. Were your screens bought with frame already glued and you face that issue? Usually such issues occur when they is no duct tape (sorry for my English) at the lcd flex cable where it folds under the frame or where the backlight circuit (I don't know the correct explanation in English I hope you understand). So I needed at my phone to replace the frame as well that's why I bought a lcd with frame (that of course was terribly glued). My issue is blacklight flickering when it wakes from sleep and if I push the edges it's ok. I have replaced a lot of note 3 LCDs without frame and I know that in all of them I had to put duct tape to make them work properly and without issues, I had only one for note 3 pro SE that was properly made. So I believe both your issues as well as mine have to do with that. If you have the broken ones, take apart the new and check side by side the flex cables and if you find exposed connections compared to the original just put duct tape.
Sent from my Redmi Note 4 using Tapatalk
earthscaper said:
Hi guys,
I have a Redmi Note 4 Snapdragon with a screen replaced recently. The problem is the screen only works after the phone is booted, if I let the screen turn off, it can't be waken up again. There's still backlight, vibration and all and I still hear sound. Which means the touch does work, only the screen doesn't display anything, just black. What can be the cause of this? Thanks everyone!
Click to expand...
Click to collapse
Perhaps you might want to enlighten us as to which ROM are you using, and who is the manufacturer of the lcd display?
DarthJabba9 said:
Perhaps you might want to enlighten us as to which ROM are you using, and who is the manufacturer of the lcd display?
Click to expand...
Click to collapse
Hi, I'm using the Ressurection Remix ROM on Android 7.1.2, planning to update to Oreo soon with the Pixel Experience ROM. And the LCD manufacturer is Tralfagar.
earthscaper said:
Hi, I'm using the Ressurection Remix ROM on Android 7.1.2, planning to update to Oreo soon with the Pixel Experience ROM. And the LCD manufacturer is Tralfagar.
Click to expand...
Click to collapse
Well, I don't know about Trafalgar - but if the new display is has an ebbg chipset, then you may have problems. There have been issues with ebbg displays and TWRP (when using custom ROMs - see for example https://forum.xda-developers.com/re...redmi-note-t3716706/post74815338#post74815338). Does everything work properly when you reboot to TWRP recovery? If not, then this may be the problem - and you may need to change your ROM to the latest MIUI releases.
I am facing same problem
I have redmi note5/5+, using custom rom (ion), I am facing same problem, changed lcd two time, tried with other roms, but nothing improved, did you find any solution.

Fingerprint sensor stops working

sometimes the indisplay Fingerprint sensor stops working at all.
The display wont recognize any touch and stays black.
If i push the Power button it starts working again.
This happens sporadically, 1 -3x a day
Did anyone had the same Problem?
Any suggestions?
Thanks for reading....
No one?
kamueone said:
No one?
Click to expand...
Click to collapse
I haven't seen this problem. I use face unlock along with it and it usually recognizes my face before I can even scan it.
When the screen is black, you can put your finger on the display and some glowing circle Appears. This does not appear to me at all. The screen just stays Black.
Thx for the information.
kamueone said:
When the screen is black, you can put your finger on the display and some glowing circle Appears. This does not appear to me at all. The screen just stays Black.
Thx for the information.
Click to expand...
Click to collapse
Maybe your fingerprints got erased somehow? Does your phone display a fingerpring icon on the screen a second after you turn the screen off?
Sent from my LYA-L29 using XDA Labs
Yes the second I turn if off it shows a fingerprint sensor. Just after a while it won't toggle the sensor if I touch the display. It's like the fingerprint sensor is deactivated. The second I turn the display on manually it appears again.
Hello! I've got the p20 pro and now I'm testing mate 20 pro. Sometimes I'm not able to unlock the mate with my fingerprints at all. Same finger. The p20 works perfect, just touch and unlock. Mate sometimes I have to touch it 3-4 times before it unlocks , sometimes it doesn't unlock at all? Is that normal? The display was exchanged already because of this issue.
I believe you guys are not the only one. This on screen finger print is not reliable. I guess because they are new and will improve over time. Personally I just use face recognition than finger print. They are a lot more faster and accurate to unlock.
I know it's an old thread but it's happening to my M20Pro right now! It's awful! The screen is protected by a tempered glass made by Spigen (maybe this glass has issues?). I reconfigured the fingerprint and I touched almost 50 times until the phone captured the fingerprint! What's wrong with that sensor?!
I had problems with glass protector, if you can get plastic film it is fine, glass you will have problems....this was my finding
Possible brightness/proximity sensor issue
kamueone said:
sometimes the indisplay Fingerprint sensor stops working at all.
The display wont recognize any touch and stays black.
If i push the Power button it starts working again.
This happens sporadically, 1 -3x a day
Did anyone had the same Problem?
Any suggestions?
Thanks for reading....
Click to expand...
Click to collapse
If you still have this phone and problem: I have a P30 Pro, and/but the reason I write here is because our phones share the fingerprint technology, and I didn't find anyone mentioning this problem regarding P30 Pro. So:
I have the same problem - seemingly sporadically the fingerprint sensor (or screen) wont react until I press the power button. Then I noticed that when the brightness/proximity sensor (located near the top right on the P30 Pro, and next (right) to the upper speaker on Mate 20 Pro) was covered, the screen would get unresponsive. I guess this is by design, to not accidently let your phone come to life in your pocket. The problem was/is that the proximity (?) sensor is way too sensitive - any obstruction at about 2 cm (0.8") above the sensor(s) will trigger this behaviour. I also think it can be triggered under other circumstances; I had som weird fingerprint/screen behaviour in a store with a high and very dark ceiling, but I have to test this again, so don't take my word for it.
Anyway - if anyone is having sporadic problems - see if this could be a reason.
Edit: Well, sometimes my screen is just totally unresponsive even without sensors blocked, so ... I noticed it a couple of times after digging my phone out of my pocket, suggesting it could still have something to do with the sensors turning the screen (functions) off. I'll try to see if I can make it behave the same way in other scenarios.
I have also been experiencing similar problems on my mate 20 pro, But mine is more of an accuracy problem. sometimes its on point and registers instantly. and other times it just doesnt at all.
However i have noticed that in extremely bright weather i have more issues, fingerprint doesnt read at all, and face ID is also doesn't. My finger print issues have started only after EMUI 10.1, so i suspect that it could possibly be a software related issue

Proximity sensor always on?

Hello friends
I wanted to ask something about proximity sensor in Mate 20 Pro. Are your sensors always on like my device.
There is a proximity sensor on front side of mate 20 pro. You cant see that sensors working with naked eye but you can see with another camera. When screen off and device is locked I cant see a difference on state of this sensor its not engaged. When I press power button and screen turned on I see red dot on top of screen (on notch) and it is always engaged while I using phone.
This is the question.
Isnt it consumpting battery and is it normal?
Everything is controlled from proximity sensor is turned of in settings.
What do you think about this is it a bug or is it a normal thing
assaritas said:
Hello friends
I wanted to ask something about proximity sensor in Mate 20 Pro. Are your sensors always on like my device.
There is a proximity sensor on front side of mate 20 pro. You cant see that sensors working with naked eye but you can see with another camera. When screen off and device is locked I cant see a difference on state of this sensor its not engaged. When I press power button and screen turned on I see red dot on top of screen (on notch) and it is always engaged while I using phone.
This is the question.
Isnt it consumpting battery and is it normal?
Everything is controlled from proximity sensor is turned of in settings.
What do you think about this is it a bug or is it a normal thing
Click to expand...
Click to collapse
This is happening to my Mate 20 Pro too. But I am not surprised neither worried as this was hapenning to my Galaxy S7 and my LG Optimus 4x.
It's perfectly Normal, minimal battery usage and prevents unnecessary screen activations in your pocket or while on a call, which results in ear touches.
Sent from my LYA-L29 using Tapatalk
Hi i finally found the solution and made a video of it on youtube. You gotta de-bloat the battery and performance from the manage app. check the video I've gone indepth regarding it.

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