Hi, today my phone refused to unlock with my face in direct harsh sunlight . This happened multiple times and finally had to use fingerprint/pattern to unlock.
This happened only in direct sunlight and no problems at all in regular and indoor lights even pitch dark.
Anybody who has tried in harsh sunlight can comment?
Attaching screenshot of the screen when it happened.
Haven't tried to replicate this after that, maybe will try again tomorrow and see.
sanjay0501 said:
Hi, today my phone refused to unlock with my face in direct harsh sunlight . This happened multiple times and finally had to use fingerprint/pattern to unlock.
This happened only in direct sunlight and no problems at all in regular and indoor lights even pitch dark.
Anybody who has tried in harsh sunlight can comment?
Attaching screenshot of the screen when it happened.
Haven't tried to replicate this after that, maybe will try again tomorrow and see.
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try again adding face in direct sunlight
Fahim Ferdoush said:
try again adding face in direct sunlight
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Thanks will try that.
Related
Mod edit: XDA is not the place to solicit reviews for merchandise. Try reading the site rules.
Is this screen protector correcting the problem of reverse polarization?
it can not cover the full screen.
Dilan49 said:
Is this screen protector correcting the problem of reverse polarization?
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Hello friend, can you please kindly clarify what problem exact it is for reverse polarization?
Flosmall.com said:
Hello friend, can you please kindly clarify what problem exact it is for reverse polarization?
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Put on polarized shades mate, you'll get it...
FlyingMachete said:
Put on polarized shades mate, you'll get it...
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We have honor 9 phone in our warehouse and the screen protectors in the warehouse also. We can test for everyone whether the problem of reverse polarized problem it is? Maybe you can give some more explanation?
FlyingMachete said:
Put on polarized shades mate, you'll get it...
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Can you explain more?! i still don't get it
PalakMi said:
Can you explain more?! i still don't get it
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I can't tell what technically happens, but try and watch the screen with polarized lenses sunglasses and the screen is plain black, you have to look very closely to barely see something, turn the phone in any directions even upside down and your display magically reappears... Pretty annoying while using the phone outdoors (with good sunglasses )
FlyingMachete said:
I can't tell what technically happens, but try and watch the screen with polarized lenses sunglasses and the screen is plain black, you have to look very closely to barely see something, turn the phone in any directions even upside down and your display magically reappears... Pretty annoying while using the phone outdoors (with good sunglasses )
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I got it, thanks
It's good to have a ir based face unlock especially it is helpful in dark conditions but it is giving me a hard time In unlocking the device in direct sunlight is anyone facing the same problemconfused:
NEON98 said:
It's good to have a ir based face unlock especially it is helpful in dark conditions but it is giving me a hard time In unlocking the device in direct sunlight is anyone facing the same problemconfused:
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Having the same issue too. I totally understand why it fails to recognize my face. Maybe it's just too bright for the camera to scan anything so I just use FP unlock when outside. Anyway, another user has raised this concern in Jai Mani's twitter account and said that he will look into it.
NEON98 said:
It's good to have a ir based face unlock especially it is helpful in dark conditions but it is giving me a hard time In unlocking the device in direct sunlight is anyone facing the same problemconfused:
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Well its not a problem.
Because sun also emits infrared radiation(lots of) , maybe it also interfere with our ir sensor,
For example :-
If your phone's front is directly facing sun and trying to unlock your device vise-vera. That ir sensor also picking up direct waves from sun and as well as incident waves from the face and unable to get proper data. I am definitely sure other phones with IR sensor also face this issue ( tested with galaxy s8+ it also doesn't work and iPhone will face this issue too).
P.S-If anyone find it wrong feel free to correct me and don't try to roast me with your incredible KNOWLEDGE!.
---------- Post added at 09:49 AM ---------- Previous post was at 09:43 AM ----------
chickentuna said:
Having the same issue too. I totally understand why it fails to recognize my face. Maybe it's just too bright for the camera to scan anything so I just use FP unlock when outside. Anyway, another user has raised this concern in Jai Mani's twitter account and said that he will look into it.
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ir face unlock does not use camera. It use separate IR sensor which only pick up infrared wave(don't get confused with visible light. infrared is out of visible wave spectrum you can't see with naked eyes). Do a experiment hide your camera and try to unlock.
That left sensor is ir sensor and right is camera(which actually picks visible light).
Hey, have this phone from yesterday, europe dual sim version. How is for you the 3d face unlock?
I feel it's often inaccurate and in these cases it it does not unlock the phone.
Also, when i am in a dark room wit a good light behind me it's often inaccurate and, again, in these cases it it does not unlock the phone always.
In fact, if you try to register your face in this last condition you will see the face very very dark and this is a problem obviously for the face unlock.
I remember this last same "dark" problem also with the P20 Pro sensor.
What you think? Any solutions? Maybe in next updates?
Edit 1: https://www.reddit.com/r/Huawei/comments/9rnmpa/mate_20_pro_face_unlock_issues/
Edit 2:
I'm having similar issues here.. It will work perfectly sometimes and then just doesn't
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UP
https://www.reddit.com/r/Huawei/comments/9rnmpa/mate_20_pro_face_unlock_issues/
Edit 2:
I'm having similar issues here.. It will work perfectly sometimes and then just doesn't
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just dont register your face in bad lighting conditions where it cannot be registered properly. I dont understand your problem tbh. Face unlock is a combination of the infrared thing and the camera.... if you use your phone while sitting in front of a bright light you cannot expect it to work. its like having wet or dirty fingers and comlpaining fingerprint isnt working.
0alfred0 said:
just dont register your face in bad lighting conditions where it cannot be registered properly. I dont understand your problem tbh. Face unlock is a combination of the infrared thing and the camera.... if you use your phone while sitting in front of a bright light you cannot expect it to work. its like having wet or dirty fingers and comlpaining fingerprint isnt working.
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Conditions are good.
if you use your phone while sitting in front of a bright light
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.... behind of a bright light, as written in first post, in fact if i try to register face in this last condition face is almost dark, but in this case the infrared camera should not help anyway?
With my iphone x in the SAME condition the face unlock works ALWAYS instantly, so i can see the difference.
denzel09 said:
Conditions are good.
.... behind of a bright light, as written in first post, in fact if i try to register face in this last condition face is almost dark, but in this case the infrared camera should not help anyway?
With my iphone x in the SAME condition the face unlock works ALWAYS instantly, so i can see the difference.
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Well if you register your face in good lighting and the unlock does not work in good lighting then there is probably something wrong. You should contact huawei about that.
If you are trying to create a bad lighting condition on purpose and then it doesnt work I am not sure why you do this. There is no point. If you are in everyday live, like in a bar or pub and the lighting is bad you have to expect that face unlock is not going to be the most reliable. Its that simple. Sitting at home and trying to push it to its limits does not benefit you at all.
It is not as secure nor the same technology as face ID so there is no point in comparing them. If FaceID is better you have to accept it. No update can change the hardware.... maybe it will be optimized but it is not going to improve by 100%.
Surely ambient light has nothing to do with the face unlock method used here, as the camera is searching for an IR dot pattern. If anything, I'd expect it to work better in the dark.
0alfred0 said:
Well if you register your face in good lighting and the unlock does not work in good lighting then there is probably something wrong. You should contact huawei about that.
If you are trying to create a bad lighting condition on purpose and then it doesnt work I am not sure why you do this. There is no point. If you are in everyday live, like in a bar or pub and the lighting is bad you have to expect that face unlock is not going to be the most reliable. Its that simple. Sitting at home and trying to push it to its limits does not benefit you at all.
It is not as secure nor the same technology as face ID so there is no point in comparing them. If FaceID is better you have to accept it. No update can change the hardware.... maybe it will be optimized but it is not going to improve by 100%.
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It works in good light but it's not accurate like FaceID or also other 2D unlock tried until now. It's not accurate, for example, when I'm sitting in an armchair often it wants certain angles to unlock, etc..
I can understand your point about create "bad light condition". Until few days ago i had a One Plus 6 with 2D face unlock, but not only it, and in the same Mate 20 conditions i had no one single problem with angles or light behind me! Maybe it's a bit hard to explain..
David Horn said:
Surely ambient light has nothing to do with the face unlock method used here, as the camera is searching for an IR dot pattern. If anything, I'd expect it to work better in the dark.
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In fact it is the same thing that I thought! "Better in the dark", but in the evening when there is an artificial light behind me, sitting in an armchair, the unlock starts to have a bit of difficulty. And instead it should be the opposite, it should work better.
In this situation if i try to register my face in fact i see my face really dark cause the light behind me goes exactly on the sensor. Same thing with P20 Pro sensor. Only with Huawei i have seen this "problem". Nor with Samsung, nor with One Plus nor with Pocophone, etc..
It's really strange.
Check the software/EMUI problem thread, see if anyone else is reporting it. Otherwise, it's news to me.
roosta said:
Check the software/EMUI problem thread, see if anyone else is reporting it. Otherwise, it's news to me.
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I think no one until now. Like no one with P20 Pro. Surely it's not fast like Apple Face ID. In same conditions. Sure about this because i have both with me so...
denzel09 said:
In fact it is the same thing that I thought! "Better in the dark", but in the evening when there is an artificial light behind me, sitting in an armchair, the unlock starts to have a bit of difficulty. And instead it should be the opposite, it should work better.
In this situation if i try to register my face in fact i see my face really dark cause the light behind me goes exactly on the sensor. Same thing with P20 Pro sensor. Only with Huawei i have seen this "problem". Nor with Samsung, nor with One Plus nor with Pocophone, etc..
It's really strange.
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for comparison. I just tested bad lighting with my mate 10 pro... worked just fine... immediate unlock
i am not sure about the IR thing. it should definately work with no light but i am not sure if it is able to "work against" light. if your light sends out inrared wavelengths it will definately interfere with the IR projector. I am pretty sure though it sends out infrared wavelengths since it gets hot.... heat=infrared light (that how heat cameras work).
denzel09 said:
I think no one until now. Like no one with P20 Pro. Surely it's not fast like Apple Face ID. In same conditions. Sure about this because i have both with me so...
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Apple were the first to introduce dot-mapping (or whatever they call the technology) to scan all areas, from left to right, of the face. The android versions on phones is more watered down...but it seems Huawei are using their own software of facial mapping which I imagine is designed to work the same as Face ID on Apple...but as there's some bugs with the pre-releases, I'd potentially wait and update the phone in 3-4 weeks to see if it resolve the issue.
RoOSTA
0alfred0 said:
for comparison. I just tested bad lighting with my mate 10 pro... worked just fine... immediate unlock
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It was perfect in my "condition" with mate 10 pro with light behind me and against the cam. Because it used only the frontal cam! When i tried to register my face with Mate 10 in "my condition" my face was no dark and clearly visible!
This IS a big difference and here there is an "error" starting from P20 Pro to Mate 20 Pro.
0alfred0 said:
i am not sure about the IR thing. it should definately work with no light but i am not sure if it is able to "work against" light. if your light sends out inrared wavelengths it will definately interfere with the IR projector. I am pretty sure though it sends out infrared wavelengths since it gets hot.... heat=infrared light (that how heat cameras work).
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Perfect point of view. Problem is: with iPhone X the IR "thing" works PERFECT against light, etc..
roosta said:
Apple were the first to introduce dot-mapping (or whatever they call the technology) to scan all areas, from left to right, of the face. The android versions on phones is more watered down...but it seems Huawei are using their own software of facial mapping which I imagine is designed to work the same as Face ID on Apple...but as there's some bugs with the pre-releases, I'd potentially wait and update the phone in 3-4 weeks to see if it resolve the issue.
RoOSTA
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Yes, completely agree with you.
But i have a little doubt, this last comes from P20 PRO, also this with light behind me and against the sensor shows me my face all "dark" and obviously no update "fixed" this. I remember with this phone in my situation was IMPOSSIBLE use the 2D face unlock.
Idk honestly if an update here can improve this kind of sensor. I hope!
https://forum.xda-developers.com/showpost.php?p=77998095&postcount=83
Facial recognition evidently hates sunlight. If your face is side on to the sun it won't work, you have to either be in shadow or directly in the sun. The fingerprint scanner I'm also finding to be very hit and miss. I have just been out using it to take some photos, lost count of the number of times both methods of unlocking didn't work.
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Edit...
It seems to me like a directional or sensor spread issue,
If i hold the phone level with my eyes and head straight (straight neck) it works perfectly, if i'm at my desk with it in my hand looking down at it then it doesn't. If i raise my head and phone vertical as its giving me the 'recognising face' message then it unlocks just as i hit vertical/straight neck.
Problem is i look a t**t raising my phone every time i want to unlock it (looks like i'm checking myself out in a vanity mirror!!)
Had the iPhone XS before this and it worked flawlessly head down or not.
Can someone else who is having issues test this theory?
Edit......
I have noticed that face unlock doesnot work properly when you register the face without glasses and then try to unlock it with glasses on ad vice-versa.
Anyone else having the issue please confirm.
Any help would be really appreciated!! ??
Haven't faced this issue
Even I registered my face without glasses and even with my glasses on the face unlock works just as fast.
No such issue mate. Had mine on when i registered. its still accurate(10 out of 10) without them. Have you tried deleting the preexisting one and capturing a new one?
Works fine with or without glasses. Works also with my sun glasses on, flawlessly.
My face unlock still work fast when without or with glasses.
Maybe your front camera lens is dirty, because some cheap screen guard covered the lens but dust can entered the lens part.
abdispotiify said:
No such issue mate. Had mine on when i registered. its still accurate(10 out of 10) without them. Have you tried deleting the preexisting one and capturing a new one?
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Tried several times mate but no positive results
manuks said:
My face unlock still work fast when without or with glasses.
Maybe your front camera lens is dirty, because some cheap screen guard covered the lens but dust can entered the lens part.
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But my screen guard leaves the notch area. So no chance of dust. Maybe it's just my device misbehaving
I'm also having the similar issue! My phone is also not unlocks when with the glasses!! Looks need to register face without specs!
atrirocks said:
I have noticed that face unlock doesnot work properly when you register the face without glasses and then try to unlock it with glasses on ad vice-versa.
Anyone else having the issue please confirm.
Any help would be really appreciated!!
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1. Sunglasses it is no problem and very fast
2. With prescription eye glasses it is slightly delayed if face is registered without eye glasses.
In all probability it is due to eye detection mode of the face unlock. If Ur eyes are closed it won't unlock.
Btw u should try the pie based beta 8.10.30, face unlock ia insanely fast.
When the phone is in direct sunlight, the phone changes the screen brightness. Somehow a slightly tilted square appears where the fingerprint sensor is located. It's not visible when manually setting brightness to the max. I hadn't noticed this before. When pressing the lock button, the square immediately disappears even though the screen off animation is still running, so it's probably a software thing.
Are there others who also have this (possibly on the February update as well)?
Whoops should've looked on reddit
Migush said:
Whoops should've looked on reddit
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Sounds like you found the answer on Reddit? If so, could you please post the answer here so other users can also have that knowledge? Thanks.
Lughnasadh said:
Sounds like you found the answer on Reddit? If so, could you please post the answer here so other users can also have that knowledge? Thanks.
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I meant that someone had already noticed it before.
Now that the sunlight is even brighter I actually see another rectangle (proximity/light sensor?) just below the front camera. I get the feeling it's not actually a software thing but just the transparency of the screen that's making it possible to look inside the phone in bright sunlight.
Lughnasadh said:
Sounds like you found the answer on Reddit? If so, could you please post the answer here so other users can also have that knowledge? Thanks.
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Are you saying there is knowledge on social media? Wink, wink..
Migush said:
When the phone is in direct sunlight, the phone changes the screen brightness. Somehow a slightly tilted square appears where the fingerprint sensor is located. It's not visible when manually setting brightness to the max. I hadn't noticed this before. When pressing the lock button, the square immediately disappears even though the screen off animation is still running, so it's probably a software thing.
Are there others who also have this (possibly on the February update as well)?
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That's the optical fingerprint scanner bud
opz187 said:
That's the optical fingerprint scanner bud
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Yeah I get that it has to do with the sensor. I just thought that somehow they had limited brightness in that area or something, but i.g. it's just the transparency of the screen that's causing it to be visible