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.
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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
Related
Hi guys,
Ill start with saying that my english is veryy bad
But my problem is:
I quess my light sensor on my hd2 is almost defect.
why?
When i start a call (or got an incoming call) the screen turns black
(as its suppose to be when you hold it to your ear)
But it turns black all the time, no matter how i hold it.
So i did a quick test, i called a number, and took a very bright light (100w) just next to the sensor. and after that, it doenst turn black for the first time!
So the sensor isnt working correctly anymore?
It is since my telephone has gone back to the shop for a new screen.
Can i make it better with software? Cause it works.. But only with a very bright light.... Or do i need to get back to the shop?
thnx
try a soft reboot and then if needed a hard reboot/factory reset. don't forget to back up the phone first as it wipes the phone
Sorry, i was forgotten to say:
Ive tried different roms, and even Android. Results are always the same!
That is an odd problem. Especially since the ambient light sensor is not what is used to black out the screen during calls. That would be the proximity sensor.
If you look very carefully just to the left of the speaker at the top of the phone you will see the proximity sensor. Do you have a case on your phone that may be blocking/interfering with this sensor? Do you hold your phone in a way that your fingers or hand may be close to this sensor?
Another thing to try is put the call on speaker phone, this should disable the proximity sensor and keep the screen on. If it does not then you may potentially have a hardware issue.
I haven't got something blocking the sensor. But because my screen was broken, they placed another one. (And since then it happend)
Ok, i did some tests..
I cleaned the screen very proper. And i was sure there was no spat of dust or whatever. so i called again.. And it worked properly!
But.. When i put my finger on the sensor.. (So its not 100% clean anymore) it turns black again. So its veeeeery sensitive..
When i turn on the speaker.. It doesnt turn black..
So conclusion:
It turns back way to fast. Only when the screen is 100% clean, and there is enough light in the room.. It works properly..
Aren't there any settings for windows or android to change the sensitivity? Cause this is very annoying..
Aren't there any settings for windows or android to change the sensitivity? Cause this is very annoying..
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Click to collapse
Not that I'm aware of. It sounds like they didn't do a proper job of replacing the screen. The ammount of light in the room should have no impact on the screen turning on/off. Also, my screen is often quite filthy and I've never had that trip the proximity sensor. It is possible that the sensor was moved or misaligned during the repair.
Hi everyone,
funny thing happened to my Mozart. Whenever I make a call the screen shuts off like it should, but it doesn't turn on again when i remove it from my ear until the call has ended.
Which works fine if the other person hangs up, but it means I can't hang up. Whenever I reach a voicemail i have to take out the battery to hang up!
First i thought it was a rom issue, i had just gotten my hands on the mango beta when i first noticed it. I thought it might be buggy.
But the problem remains after hard reset and flashing with a different rom (pre-nodo & nodo).
I found out that the sensor still works. The screen is reactivated when i shine a bright light (halogen spot or so) onto it - but only for as long as the source shines onto the sensor, else the screen shuts off again. wierdly enough, direct sunlight doesnt seem to be enough to trigger it anymore.
since i upgraded my phone with a 32GB microSD I guess I'm not eligible for warranty, huh? but im pretty sure it happen long after and i didn't accidently break something while opening the phone.
very weird... any ideas?
I had this problem on the weekend.
I removed the matt screenGUARD, and the problem disapeared.
Also you can reactivate the screen by pressing the on/off button...
thanks for your comments.
unfortunately, I don't use a screen protector and the standby-button doesn't work during a call
I have this problem also, with stock 7392 rom. The sensor seems to work when dialing, but stops a short time after a call is connected.
The power button works for me to turn the screen back on however...
Where is the proximity sensor ?
where on the device is the proximity sensor located?
I have been having difficulty with the screen not switching on during phonecalls and I have to remove battery to end outgoing calls. Pressing the power button doesn't help either. I don't have a screenguard to remove.
The problem started not long after, but not immediately after my daughter dropped the phone down the toilet. It took a few days for the phone to gently dry out and it worked again except for some residual water between the screen and the glass.
Richard Fantom said:
where on the device is the proximity sensor located?
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The sensor is about 1 cm to the top and right of the htc logo. It's barely visible and it is dark violet. (Or something like that, I am not very good at naming colours.)
Anyway, I sometimes also experience problems with sensitivity with HTC Mozart, mostly during calls, especially when the proximity sensor has been activated. Sometimes the home button freezes after a call... It's a bit annoying.
Also, always on display turns completely off.
Not sure what's going on here, but it's extremely annoying. If I'm outside at night or in a dark room or area my phone thinks it's in my pocket so the fingerprint sensor, tap to wake, and always on display don't work. I have to press the power button extremely hard to get it to turn on.
Also, not sure if related but when I make a phone call, as soon as I dial the number my screen will turn off completely before I even bring the phone up to my ear.
Any ideas?
Make sure there's nothing in front of the proximity sensor. When that is triggered and it's dark, it disables the fingerprint reader and always on display. I use a Life proof case and when I had a screen protector on with that, it caused issues.
Definitely nothing on it. Not using a case or screen protector.
brian85 said:
Definitely nothing on it. Not using a case or screen protector.
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Click to collapse
Download a sensor test app, there are many of them on the play store, check the proximity sensor with one of that apps, if it doesn't work then your g5 is faulty
Sent from my LG G5 using XDA Labs
Also noticed when I cover up the sensor my brightness immediately jumps to 0%. It's no longer a slow and steady drop down to 0, it just immediately goes to 0. Like and on/off switch
Just downloaded a lightand proximity sensor test and it seems to work perfect. So I'm not sure what's up.
OK this is weird,there must be a setting I messed up. My auto brightness jumps from 0% to 51% to 100% depending on the lighting I'm in. Nothing in between and no more smooth transitions.
Looks like my proximity sensor is dead. Tested it through and app and it says "near" and never changes.
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
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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.
I have a problem. It's the Nova 5T. It was bought on the of this month and I was not able to follow the situation as it was on Android 9 / EMUI 9.1 or 10.0 because EMUI 10.1 arrived soon! It literally went uodate for an update! I don't even know how I noticed, but there is a problem with the proximity sensor. Namely, when the phone is in a horizontal position, for example on a desk, and a call is in progress, the proximity sensor does not respond, ie the phone turns on the screen regardless of the proximity sensor being covered and in that case it should keep the screen off. In a horizontal position and a little when the phone is lifted, a few millimeters, the sensor does not seem to be covered by a finger, it does not react but the screen is on, which should certainly not happen. I tried with a hard reset but everything is the same. Can you tell me, how is it with you who have this phone? I wonder, is this a possible bug in EMUI 10.1, is it a normal function in EMUI 10.1 or is the proximity sensor on the phone simply broken? In case I do the same only the other way around, then I turn the phone screen towards the floor, e.g. I cover the proximity sensor with my finger and hold the phone horizontally. The phone and sensor respond normally and the phone screen does not light up during a call. Let me note that the proximity sensor in the upright position of the phone, for example when the call takes place and the phone is on the ear, normally turns off the screen and everything is fine. The phone is not as agile as the carousel rotates in different slits, poses and angles to test its correctness, this problem was noticed quite by accident. If someone has this phone, it would be helpful for me to write if it is the same with him or if there is a problem in my phone! I would ask someone from Huawei to answer me. Sorry for my poor English. Thank you