Face unlock not working when screen off - Google Pixel 4 XL Questions & Answers

Anyone else having this issue? I have to either tap phone or tap power button to get screen to turn on, then face unlock will work. Previously I would be able to just hold it up to my face with screen off and it would just unlock. After most recent update it no longer does this. Very frustrating.

Check maybe lift to wake phone is turned off in the settings.

cwburns32 said:
Anyone else having this issue? I have to either tap phone or tap power button to get screen to turn on, then face unlock will work. Previously I would be able to just hold it up to my face with screen off and it would just unlock. After most recent update it no longer does this. Very frustrating.
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Click to collapse
Mine was doing that too...along with auto brightness stuck and the proximity sensor wasn't turning the screen on and off during calls. As a last resort before sending it back (since I had to wipe it anyway) I tried the first android 11 beta (not 1.5). It almost completely fixed everything but the proximity sensor. Still had to occasionally tap the phone or power it on to face unlock though. Google replaced it because of the proximity sensor. The replacement phone is working fine on latest update of 10

redskykiter said:
Mine was doing that too...along with auto brightness stuck and the proximity sensor wasn't turning the screen on and off during calls. As a last resort before sending it back (since I had to wipe it anyway) I tried the first android 11 beta (not 1.5). It almost completely fixed everything but the proximity sensor. Still had to occasionally tap the phone or power it on to face unlock though. Google replaced it because of the proximity sensor. The replacement phone is working fine on latest update of 10
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Click to collapse
Good to know. Haven't wiped just yet, may do what you did there.

cwburns32 said:
Good to know. Haven't wiped just yet, may do what you did there.
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Click to collapse
I really didn't have ANY bugs that I found with beta 1....read 1.5 has some issues. Is your proximity sensor working? I used androsensor to confirm
edit I did wipe face data before erasing

redskykiter said:
I really didn't have ANY bugs that I found with beta 1....read 1.5 has some issues. Is your proximity sensor working? I used androsensor to confirm
Click to expand...
Click to collapse
My prox sensor is working fine. It just won't face unlock with screen off. Turned on lift to check phone and now screen wakes without me having to do anything but still, there was a time where I had that feature off and face unlock would unlock with screen off

cwburns32 said:
My prox sensor is working fine. It just won't face unlock with screen off. Turned on lift to check phone and now screen wakes without me having to do anything but still, there was a time where I had that feature off and face unlock would unlock with screen off
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Click to collapse
I never had lift to wake off. That sounds like a solution to me

redskykiter said:
I never had lift to wake off. That sounds like a solution to me
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Click to collapse
Yah maybe I am just imaging things idk hahah lift to wake works, along with various other setting so not a huge issue. Thanks

Related

In call screen problem after JB .. i think..

Hello,
when i call, the screen became black because of proximity sensor. when i took of the phone from my ears.... the screen don't turn on. if i puh the sensor with my fingers.. many and many times sometime it turn on..
i've a protector on screen but isn't on the sensor..
gattobau said:
Hello,
when i call, the screen became black because of proximity sensor. when i took of the phone from my ears.... the screen don't turn on. if i puh the sensor with my fingers.. many and many times sometime it turn on..
i've a protector on screen but isn't on the sensor..
Click to expand...
Click to collapse
Yea this happens to me too. I just use Hardware Disabler to stop the proximity driver. So the screen never turns off in a call until the screen time out. And you can turn it back on by pressing the power button. Keep in mind though, that app makes the phone laggy...it's annoying at times, but less annoying then waiting on people to hang up or leaving them a long voicemail when they don't pick up
Turn on the proximity sensor
The proximity sensor on V20a is disabled by default. you can enable it by going into the secret menu and your problem will be solved.
Dial 3845#*880# ---->Device Test ---->All Auto Test Menu-Full --->ALC/Proximity Test --->Enable the proximity sensor here
Done
mahendrabiradar said:
The proximity sensor on V20a is disabled by default. you can enable it by going into the secret menu and your problem will be solved.
Dial 3845#*880# ---->Device Test ---->All Auto Test Menu-Full --->ALC/Proximity Test --->Enable the proximity sensor here
Done
Click to expand...
Click to collapse
Omg thank you!! lol i was doing it the hard way haha
let's try! thanks
Strange. It works properly in my case for JB. I never activated it in hidden menu. Anyways thanks for the info.
ynkamat said:
Strange. It works properly in my case for JB. I never activated it in hidden menu. Anyways thanks for the info.
Click to expand...
Click to collapse
Same ! and indeed really strange
i've had the same problem. it sometimes happens, sometimes doesn't. no change after i enabled it in secret menu, still unreliable.

[Q] Screen stays off during call no matter what I do!

When I am in a call, putting the phone to my face turns the screen off using the proximity sensor. However, removing the phone from my face does not turn the screen back on. Nothing turns it back on even if I push all the buttons or hold them or do anything unless the other person hangs up. I cannot remember when it started....before or after the recent update.....but it did start very recently. Any ideas? If I turn off the proximity sensor during calls it works fine by locking and unlocking the screen with the buttons.
MNDZA said:
When I am in a call, putting the phone to my face turns the screen off using the proximity sensor. However, removing the phone from my face does not turn the screen back on. Nothing turns it back on even if I push all the buttons or hold them or do anything unless the other person hangs up. I cannot remember when it started....before or after the recent update.....but it did start very recently. Any ideas? If I turn off the proximity sensor during calls it works fine by locking and unlocking the screen with the buttons.
Click to expand...
Click to collapse
Is anything covering the front facing camera, or light sensor? Like a case, bad screen protector, etc....
Does your front facing camera work just fine as a camera?
How about air gestures? Do they work?
I'm asking these things because it seems your proximity sensors aren't working properly. Your phone thinks it's next to your head all the time, so it's not waking the screen until the other person ends call. We need to find out which one is acting up and why.
The front camera works, but in my office it seems VERY sensitive to light. The lights are glaring heavily. I never use the front camera so I don't know if that's normally how it was. Air gestures work when the screen is on (swiping left and right to view my photos), but the quick glance won't work when the phone is locked. The weird thing is that quick glance works when I do the "try it" tutorial only.
440bro said:
Is anything covering the front facing camera, or light sensor? Like a case, bad screen protector, etc....
Does your front facing camera work just fine as a camera?
How about air gestures? Do they work?
I'm asking these things because it seems your proximity sensors aren't working properly. Your phone thinks it's next to your head all the time, so it's not waking the screen until the other person ends call. We need to find out which one is acting up and why.
Click to expand...
Click to collapse
Ok now it seems quick glance DOES work when the phone is off....I just couldn't do it correctly.
Main problem still exists though.
What rom are you using
Sent from my SAMSUNG-SM-N900A using Tapatalk
My note 2 started like this also. I don't know what's wrong with it.
Sent from iNew V3 using Tapatalk
My phone is completely stock and not rooted.
MNDZA said:
My phone is completely stock and not rooted.
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Click to collapse
then i would contact att and get a warrenty replacement
jerrycoffman45 said:
then i would contact att and get a warrenty replacement
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Click to collapse
I was thinking that, but I'm tempted on resetting my phone and seeing if that helps. The problem is that I would lose all my app data and I'd hate to deal with that.
MNDZA said:
I was thinking that, but I'm tempted on resetting my phone and seeing if that helps. The problem is that I would lose all my app data and I'd hate to deal with that.
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Click to collapse
att will ask you to do that when you call
MNDZA said:
When I am in a call, putting the phone to my face turns the screen off using the proximity sensor. However, removing the phone from my face does not turn the screen back on. Nothing turns it back on even if I push all the buttons or hold them or do anything unless the other person hangs up. I cannot remember when it started....before or after the recent update.....but it did start very recently. Any ideas? If I turn off the proximity sensor during calls it works fine by locking and unlocking the screen with the buttons.
Click to expand...
Click to collapse
Unfortunately this sounds like a bad proximity sensor. This can be verified by testing the sensor by dialing *#0*#
I had this happen to my last Note 3. The only difference was I could turn the screen back on with the home button.
done12many2 said:
Unfortunately this sounds like a bad proximity sensor. This can be verified by testing the sensor by dialing *#0*#
I had this happen to my last Note 3. The only difference was I could turn the screen back on with the home button.
Click to expand...
Click to collapse
I tried that *#0*# test and I can activate the proximity sensor, but it seems to stay on after that.
This is a known issue with our phone. I had this issue myself. Plenty of times. Just call ATT and ask for a replacement.
Yeah I just found this:
http://forums.androidcentral.com/sa...-3-proximity-sensor-issue-during-calls-5.html
It's not a software issue use canned air and blow by the speaker and the headphone jack als o press on the back of the phone . This has happened to me
Sent from my SAMSUNG-SM-N900A using xda app-developers app
i stumbled upon this thread and took my phone apart and sure enough there was lint in it. in the dial pad using the *#0*# method, when i covered the sensor the screen would light green, vibrate, and stay that way after i moved my hand away. i cleaned it and everything is perfect!!!
Try this
https://www.youtube.com/watch?v=fls4NIRJ1IQ&feature=youtube_gdata_player
Sent from my Note 3 SM-N900A rooted by Designgears

Unresponsive fingerprint sensor

Hey guys,
Recently, I've been having issues with my fingerprint sensor/unlock screen. Sometimes when I pull my phone out of my pocket and attempt to unlock the phone witht he fingerprint sensor, it won't respond. I then press the power button, which turns the screen on and when I use the fingerprint sensor, i can feel the vibration from the button but the screen does not unlock. There is also no fingerprint icon at the bottom. I can't unlock by swiping and putting in my password either. This eventually fixes itself after 30-45 seconds, but its really annoying when I want to use my phone. I've tried switching launchers, thinking that this might have been the problem, but this did not fix it.
I'm running stock OxygenOS 4.1.6, kernel [email protected] #1. I'm using the google launcher currently.
Its something to do with the light sensor cause i have it happen at night time when i am listening to podcasts in bed, it comes up to press one of the volume buttons and back to bypass it - but after 10 seconds it lets you unlock it anyway?
Pocket mode, try turning that off. Pocket mode uses the proximity sensor (I think) to detect whether it's in a pocket or not. If it is, then the fingerprint scanner will refuse to work so as to prevent accidental touches in the pocket
Turned it off last night. It's still happening. And it happens even when the phone is sitting on my desk. I go to try and unlock it and it won't respond.3
Delete and reset them. I find it happens after a month or so of use. I'm on Sultans marshmallow.
Originally when it happened I thought the ROM had gone bonkers and flashed back to stock. I missed the battery life too much on the CM13 build so I tried his marshmallow again. And guess what? It happed again. So I just deleted them and reset my fingerprints and voila! Snappy again.
Let me know if it works for you!
Just delete your current fingerprints and reset them. Should become snappy once again.
Happened to one of my friends and that's how I fixed it for him.
Cheers.
Never had issues with. Maybe you use it wrong side of finger, i mean you must unlock with you finger horizontally and not vertically finger
moSess said:
Delete and reset them. I find it happens after a month or so of use. I'm on Sultans marshmallow.
Originally when it happened I thought the ROM had gone bonkers and flashed back to stock. I missed the battery life too much on the CM13 build so I tried his marshmallow again. And guess what? It happed again. So I just deleted them and reset my fingerprints and voila! Snappy again.
Let me know if it works for you!
Click to expand...
Click to collapse
My phone has started acting wonky, not only with the finger print sensor but sometimes the touchscreen will become unresponsive, but I'll be able to turn the screen on or off. I'll have to try resetting tonight.

Serious practical problem lock screen

Strange thing is happening recent to me...
Namely, while using headphones while talking on the phone, the unit gets unlocked while in pocket and problems arise with spontaneous keys getting activated.
If even cannot be explicitly locked by pressing the power button.
Have not found a solution to this problem, and it's strange why the proximity sensor does not work in pocket.
Cannot remember whether this was previously, or is it since last ROM upgrade.
Anyone having same problem?
tomsag said:
Strange thing is happening recent to me...
Namely, while using headphones while talking on the phone, the unit gets unlocked while in pocket and problems arise with spontaneous keys getting activated.
If even cannot be explicitly locked by pressing the power button.
Have not found a solution to this problem, and it's strange why the proximity sensor does not work in pocket.
Cannot remember whether this was previously, or is it since last ROM upgrade.
Anyone having same problem?
Click to expand...
Click to collapse
Yep I have the same thing... Today my pocket took 9599295 pictures and movies.. also when I'm a bit sweat my pocket dial random numbers. I've noticed that when screen is touched and disnt recognize fingerprint then whole lockscreen shows up and its easy way to random open dial or camera... Its rly anoying, because I dont want to hide phone screen outside of the skin. (Its easier to break screen if I hit something with my leg.)
Dunno why it doesnt use proximity sensor to recognize that phone is in the pocket like every other brand... :/
Do you have the double tap to wake up activated?
I had this problem a while ago and it was the double tap that played all kinds of tricks calling emergency and taking pictures in my pocket! Disable double tap to wake up screen and the problem goes away.
Disable the fingerprint icon on when the screen if off.
Gokh said:
Disable the fingerprint icon on when the screen if off.
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Click to collapse
Tried everything but the problem is eventually still there. Actually I've found a bug, namely the display will wake up once touched several times near the center of the fingerprint reader. Try it yourself.
Not nice - cannot avoid to happen it sometimes even if all options are disabled.
tomsag said:
Tried everything but the problem is eventually still there. Actually I've found a bug, namely the display will wake up once touched several times near the center of the fingerprint reader. Try it yourself.
Not nice - cannot avoid to happen it sometimes even if all options are disabled.
Click to expand...
Click to collapse
I didn't have this problem. If I try now and touch the part with the scanner, doesn’t have to be just the centre of the scanner, rapidly around ten times the lock screen will turn on, but nothing happens when I touch the shortcuts. Perhaps they are disabled, so the only thing that happens if the scanner is touched again is that the numpad to unlock with pin appears.
This is not good as it may severely affect battery life if it happens a lot. This clearly must be a bug!
gerhard_wa said:
I didn't have this problem. If I try now and touch the part with the scanner, doesn’t have to be just the centre of the scanner, rapidly around ten times the lock screen will turn on, but nothing happens when I touch the shortcuts. Perhaps they are disabled, so the only thing that happens if the scanner is touched again is that the numpad to unlock with pin appears.
This is not good as it may severely affect battery life if it happens a lot. This clearly must be a bug!
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Click to collapse
Even worse, since it is happening all the time while on a call via BT and my phone is in the pocket. I am now thinking about to switch over to my old MI8...
Cannot understand why the keyboard is not disabled in the pocket. Seems so easy to do it but it's as it seems on.
tomsag said:
Even worse, since it is happening all the time while on a call via BT and my phone is in the pocket. I am now thinking about to switch over to my old MI8...
Cannot understand why the keyboard is not disabled in the pocket. Seems so easy to do it but it's as it seems on.
Click to expand...
Click to collapse
My only solution was to buy a flip case. At first, I disabled the fingerprint reader by removing all fingerprints and setting up face recognition, but this didn’t fix the problem you are talking about. I don’t really like flip cases, but the Nillkin QIN Smartcase is rather good.
So now I ‘m eagerly awaiting a fix from Xiaomi so I can strip the Mi9 again!
Gokh said:
Disable the fingerprint icon on when the screen if off.
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Click to collapse
Where can the fingerprint icon be disabled? Thank's.
j4dotcc said:
Where can the fingerprint icon be disabled? Thank's.
Click to expand...
Click to collapse
Disabling the fingerprint icon has no effect on the problem we are talking about here. The only way to make the problem go away is to remove all the stored fingerprints thus disabling the use of fingerprints all together. This will shut off the fingerprint sensor doing away with this problem in a crude way.
If you really are looking for a setting, please use the search function at the top of the settings.
gerhard_wa said:
Disabling the fingerprint icon has no effect on the problem we are talking about here. The only way to make the problem go away is to remove all the stored fingerprints thus disabling the use of fingerprints all together. This will shut off the fingerprint sensor doing away with this problem in a crude way.
If you really are looking for a setting, please use the search function at the top of the settings.
Click to expand...
Click to collapse
Thanks for the prompt reply. I don't have the problem and just wanted to know where I can disable the fingerprint icon. Thanks again.
New uppdate out that include Pocket Mode. MIUI-V10.2.27.0PFAEUXM EEA version.

How to turn off fingerprint scanner activating on lift after new update?

Anyone know if there's a way to disable the fingerprint scanner activating any time I pick up the phone now? Never did that before the update, it's pretty annoying. Already have lift to wake turned off, but that doesn't fix it. Went through every setting and didn't see a way to fix it. And it's not the lift to wake option, the whole screen doesn't turn on, just the fingerprint scanner and icon. Seems to be making my battery life way worse.
paulson64 said:
Anyone know if there's a way to disable the fingerprint scanner activating any time I pick up the phone now? Never did that before the update, it's pretty annoying. Already have lift to wake turned off, but that doesn't fix it. Went through every setting and didn't see a way to fix it. And it's not the lift to wake option, the whole screen doesn't turn on, just the fingerprint scanner and icon. Seems to be making my battery life way worse.
Click to expand...
Click to collapse
Because Blu cust support has not duplicated it, others with update didn't duplicate it.
Makes it seem like just your phone.
Did you try to factory reset it.
Fully. Remove saved fingerprint remove accounts,
Reboot to recovery and do factory reset. Setup phone again
paulson64 said:
Anyone know if there's a way to disable the fingerprint scanner activating any time I pick up the phone now? Never did that before the update, it's pretty annoying. Already have lift to wake turned off, but that doesn't fix it. Went through every setting and didn't see a way to fix it. And it's not the lift to wake option, the whole screen doesn't turn on, just the fingerprint scanner and icon. Seems to be making my battery life way worse.
Click to expand...
Click to collapse
Late reply I know but I found out how to disable this option.
In the settings go to:
Display->Ambient Display
Turn off the option for New Notifications.
I have no idea why it is called this as new notifications (SMS at least from my quick test) still wake the screen,but the fingerprint sensor no longer shows when you lift or move your phone. Completely mislabeled but hey at least you can turn it off.

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