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?
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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
Two issues:
1. Anyone has similar encounters with the fingerprint sensor generally not being cooperative when you first wake up the phone?
Went into the option to identify my fingerprint by applying my thumb in various angles and position and it works with 100% accuracy.
But 7 out of 10 times the first one or two unlocking attempts will fail whenever the screen is off.
2. Is 45 degrees considered too hot for fast charging (two lightning icon, NOT supercharge) using the Huawei wireless charger?
Note: checked out the Battery temp under ccleaner > system info > battery. Not too sure how accurate the number is but phone felt hot to the touch with an acrylic casing on.
Thanks.
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.
Has anyone else faced with the issue of display not working properly in K20 Pro?
I started facing few problems from day 1, though the problems were minor like
.
[Problem 1] When using the phone with dark mode on or with absolute black background with 0-25% brightness the screen didnt respond well to on screen movements. Like when scrolling, the items on the screen produced a blue shadow on black backgrounds.
I thought this was due to Xiaomi's usage of cheap & low quality Super Amoled displays. Im not sure if it is as i thought it is or due to some other reasons.
[Problem 2] after 25-27 days of usage the ambient disolay started to switch of automatically after a few seconds of locking the screen. And when i tries to unlock the screen by fingerprint, te scanner didnt work. I had to push the lock button and then the screen switched on after 4-5 seconds of pressing the button(i was pressing the button only once and not holding it).
I still dont know why did this happen (I'll update soon)
[Problem 3] after 2-3 days of the problem 2 one fine morning my screen went dark.... Like completely blank, although i tried switching on and off multiple times but the screen didnt show a single hope to turn on.
So i took iit to the service centre and found out that there were many people with the same problem. Most of them being the first launch sale buyers(including me).
SERVICE CRNTRE told me that there was instructions from the comoany(Xiaomi) to collect all the Faulty screen K20 Pro's and provide a new sealed box within 1 week. Providing that there are no signs of external damage to the handset. Peoole will have to suubmit the box and its contents with the phone.
So Yaaay! For that but Naaay! For xiaomi for producing soo many faulty handsets out of the factory.
I'm writing this post as there are no posts regarding this issue on the internet and i was shocked when my phone went dark.
i’m facing problem 1 too
but no touch issue or burning for me
mine is China 6/128gb variant
1st batch
Hi all,
First post here! So I replaced the screen on my honor 10 lite the other day, as well as the charging/headphone jack pcb and battery - all working fine aside from now none of the sensors work. So accelerometer, gyro, screen brightness (auto option no longer there in phone brightness settings) and proximity are not working. I know underneath the main motherboard there's a 'sensor board' small pcb - does this handle the function of all the sensors? A new board looks inexpensive enough - i don't see how I could have possibly damaged the board but if replacing it will fix it that would be easy, just don't want to spend more money on repairing this phone if I don't need to.
Appreciate if anyone with any insight could help! Thanks!