Bug with fingerprint combined with double press for camera - Xiaomi Mi A2 Lite Questions & Answers

Hey, I've found about a bug on our cute little phone. If you did already setup the fingerprint and you have enabled double tap to jump to camera you'll have this bug, at least I have. While the screen is off, if you jump to camera with double tap option on power button and immediately place your scanned finger on scanner you will darken your screen except in nav. bar in status bar, the screen is not interactive at all except upper and lower part of screen. If you lock and unlock your phone, it's back to normal, or sometimes it would fix it if you would just lower the status bar. Am I the only one who has this bug, or is there somebody else as well?

I don't have it. Feb update Pie.
Sent from my Mi A2 Lite using Tapatalk

Yup, I tried it with the latest update (March) and indeed it happens what you say. It's not a very important bug since you need to be pretty fast and can get solved just by locking and unlocking again but it's there.

bookerds said:
Hey, I've found about a bug on our cute little phone. If you did already setup the fingerprint and you have enabled double tap to jump to camera you'll have this bug, at least I have. While the screen is off, if you jump to camera with double tap option on power button and immediately place your scanned finger on scanner you will darken your screen except in nav. bar in status bar, the screen is not interactive at all except upper and lower part of screen. If you lock and unlock your phone, it's back to normal, or sometimes it would fix it if you would just lower the status bar. Am I the only one who has this bug, or is there somebody else as well?
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Good find...I just try it and it happened to me just like you.

Related

[Q] Double tap to lock screen inside apps.

Hey there. I was wondering if it's possible to double tap to lock screen inside apps? For instance - I'm in a gallery and when I double tap it locks the screen.
The double tap lock screen function works fine when you're on the home screen, but not in any app.
Not that I know of since with Android, the app (activity) that has the focus on the screen accepts all the taps.
You could try swiping down near where the status bar would be to make it appear and then double tap that. That's how I get it to work with Nova launcher. Well, I don't have to swipe down since the status bar is there. I just double tap the status bar to turn off the phone.
I use knock to turn on the phone.
Use it with Nova as well.
Sent from my LG-D850 using Tapatalk
iBolski said:
Not that I know of since with Android, the app (activity) that has the focus on the screen accepts all the taps.
You could try swiping down near where the status bar would be to make it appear and then double tap that. That's how I get it to work with Nova launcher. Well, I don't have to swipe down since the status bar is there. I just double tap the status bar to turn off the phone.
I use knock to turn on the phone.
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Didn't even thought about it, I'll stick to this method for now. Thanks
Danielsbee said:
Didn't even thought about it, I'll stick to this method for now. Thanks
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There's also a reason they don't have this feature added. What if you were trying to play a game and everytime you tapped the screen too quickly it turned off? Or you were going through some menu fast enough that it registered you tapping two different options as a double-tap. There would have to be some sort of per-app filter like the stock rom has for hiding the nav buttons in certain apps. Not saying this idea couldn't work, because if you or someone else ever gets it working I'd be glad to use it!
acparker18 said:
There's also a reason they don't have this feature added. What if you were trying to play a game and everytime you tapped the screen too quickly it turned off? Or you were going through some menu fast enough that it registered you tapping two different options as a double-tap. There would have to be some sort of per-app filter like the stock rom has for hiding the nav buttons in certain apps. Not saying this idea couldn't work, because if you or someone else ever gets it working I'd be glad to use it!
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That's true, but I was asking the question because when my phone is flat on the table or something with gallery opened, it's uncomfortable to slide your finder to the back of the phone to lock the screen so I wanted to know if there's a chance to lock it with tapping. But when I'm playing games, it's different story - I already have my fingers on the back of the case so it's no longer uncomfortable to lock it.
Danielsbee said:
That's true, but I was asking the question because when my phone is flat on the table or something with gallery opened, it's uncomfortable to slide your finder to the back of the phone to lock the screen so I wanted to know if there's a chance to lock it with tapping. But when I'm playing games, it's different story - I already have my fingers on the back of the case so it's no longer uncomfortable to lock it.
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That's where I'd say swipe down to show the notif bar and then double tap the notif bar. That's what I do so I don't have to pick up the phone to turn off the screen. Then, using a knock pattern, I can turn on and unlock the phone via the knock pattern. Don't have to double tap the phone to wake it up and then unlock it (either via pattern or pin). Instead, with knock, just knock the pattern and it turns on and unlocks all at once. Love it!
iBolski said:
That's where I'd say swipe down to show the notif bar and then double tap the notif bar. That's what I do so I don't have to pick up the phone to turn off the screen. Then, using a knock pattern, I can turn on and unlock the phone via the knock pattern. Don't have to double tap the phone to wake it up and then unlock it (either via pattern or pin). Instead, with knock, just knock the pattern and it turns on and unlocks all at once. Love it!
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Yeah. Like I said previously, I'll be using this method
If you use Xposed and G3 tweakbox, there is an option to double tap the nav bar to lock the screen as well.
This will give you a place at the top and bottom of the display to lock the screen when in an app (or using a launcher replacement).
Artimis said:
If you use Xposed and G3 tweakbox, there is an option to double tap the nav bar to lock the screen as well.
This will give you a place at the top and bottom of the display to lock the screen when in an app (or using a launcher replacement).
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I don't see why to use that option to 'enable' it when it is already enabled and working in default.
Danielsbee said:
I don't see why to use that option to 'enable' it when it is already enabled and working in default.
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By default it works on the status bar (top of the screen). The option in G3 tweaksbox allows it to work on the Nav bar (bottom of screen) as well which is not enabled by default.
Artimis said:
By default it works on the status bar (top of the screen). The option in G3 tweaksbox allows it to work on the Nav bar (bottom of screen) as well which is not enabled by default.
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Oh then it's a nice option to enable then.
I got confused about the nav bar, I thought it was the status bar.
But the tweaksbox requires root which I don't want to do :s.
You don't need to pull down the notification bar at all to double tap to turn the screen off.
You just double tap the very top of the screen where your notification bar would be.

Navbar touch issue

Hello,
Sorry if this has been covered else where. I found stuff that was similar but not quite the same.
I am having an issue with Pixel 2 XL where the touches will not track over the navigation bar. If you tap on the navbar, the touch is forced to the top or bottom depending on if you tap is closer to the top or bottom respectively. If it's pushed to the bottom, it works OK, but taps forced to the top trigger the search bar.
When dragging down, the navbar essentially blocks the drag, then a second tap registers below the bar as you pass over it. Since you're at the end of your drag at this point, you lift your finger and the second tap registers as a button press. This results in accidentally tapping the nav bar buttons when you are just dragging down.
I played with it so much that I found if you get just the right spot you'll, end up with two active tap-spots. If I drag rapidly across the nav bar for like 10-30 seconds, it will return to normal, but the phone gets a bit freezy, and seizes up randomly for 3 to 10 seconds at time. After a while it seems to return to normal.
I have also experienced the "screen freezes for a bit, then suddenly registers 100 taps" issue. I'm not sure if they are related. If anyone has insight into this issue as well, i'd love to hear it.
Is anyone else having these issues? I have a video but I'm not allowed to post outside links.
Thanks very much
marshle said:
Hello,
Sorry if this has been covered else where. I found stuff that was similar but not quite the same.
I am having an issue with Pixel 2 XL where the touches will not track over the navigation bar. If you tap on the navbar, the touch is forced to the top or bottom depending on if you tap is closer to the top or bottom respectively. If it's pushed to the bottom, it works OK, but taps forced to the top trigger the search bar.
When dragging down, the navbar essentially blocks the drag, then a second tap registers below the bar as you pass over it. Since you're at the end of your drag at this point, you lift your finger and the second tap registers as a button press. This results in accidentally tapping the nav bar buttons when you are just dragging down.
I played with it so much that I found if you get just the right spot you'll, end up with two active tap-spots. If I drag rapidly across the nav bar for like 10-30 seconds, it will return to normal, but the phone gets a bit freezy, and seizes up randomly for 3 to 10 seconds at time. After a while it seems to return to normal.
I have also experienced the "screen freezes for a bit, then suddenly registers 100 taps" issue. I'm not sure if they are related. If anyone has insight into this issue as well, i'd love to hear it.
Is anyone else having these issues? I have a video but I'm not allowed to post outside links.
Thanks very much
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I tried to replicate what your talking about. However, I couldn't do it. Maybe because I'm using Nova launcher, which may be a viable option for you. A factory reset might be helpful, however, we all know how much fun that ISN'T! Definitely an interesting issue your having. Then again, I think these devices have a mind of their own at times ?
Thanks for your reply. Forgot to mention, I have tried safe mode and done a factory reset and it did not remove the issue. It seems after a factory reset you are still on Oreo 8.1, so I'm not able to confirm it the issue exists in 8.0. I also have tried Nova Launcher.

Does your pulldown randomly stop working?

Every once in awhile, my notifications pull-down won't pull down.
If I lock the phone, then unlock it, the pull-down starts working again.
It's been like this through multiple clean OS re-installs.
Am on Magisk 17.3.
I've had more software bugs on the PXL3 than any other phone before, including the PXL1.
I have the same damn problem. It just doesn't work all the time. I also had the issue of bright white screen on double tap to wake. So, I called Google Support for this, and the guy on the other said made me clear the cache of the phone app, force stop it, turn the phone off for 2 mins and then restart for both issues. I even asked him how this relates to the fingerprint sensor not detecting, he replied some stuff that, phone app controls the vibration and the display waking up.
Of course both problems does not occur for me frequently, so after that procedure I did not encounter the white screen problem, but fingerprint gestures were still kinda hit and miss. Although they work pretty good now, less miss count. For me they work when I swipe just the edge of index finger lightly, also if finger is very dry, it doesn't detect.
I tried the pulldown five times while this logcat was running.
I'm on Nova Launcher but think it happened on stock launcher too.

Q: Fingerprint while on phone call

This has been bugging the ISH out of me....
On my OP6.. if i was on a call and i touched my FP sensor it unlocks the phone for me to access anything i want.
When on my P3XL doing the same doesn't produce the same results at all, i have to bring down notification window press settings and then it asks for FP.
I also have my navbar hidden, which can be affecting how this entire thing functions too, not sure.
Has someone figured out a way around this?
I just called my phone from my work number and the fingerprint sensor unlocked. Phone was locked when I called it, I called my phone, swiped up to answer. While in the call I tapped the home button and was taken to the lock screen. Touching fingerprint sensor brought me to home screen. With the screen off, touching fingerprint sensor also unlocked and brought me to the home screen.
fury683 said:
I just called my phone from my work number and the fingerprint sensor unlocked. Phone was locked when I called it, I called my phone, swiped up to answer. While in the call I tapped the home button and was taken to the lock screen. Touching fingerprint sensor brought me to home screen. With the screen off, touching fingerprint sensor also unlocked and brought me to the home screen.
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well that's because you still have your home button..
I suppose this is more relative to those using gestures and hid their navbar...
I also did it with screen off, as I said, and it worked both ways.
fury683 said:
I also did it with screen off, as I said, and it worked both ways.
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wth , so i have a phone call ongoing, i place my finger on theFP sensor .
i swipe up to go home, nothing happens. , doesn't even ask me for a FP
masri1987 said:
wth , so i have a phone call ongoing, i place my finger on theFP sensor .
i swipe up to go home, nothing happens. , doesn't even ask me for a FP
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Try shutting the screen off first. I just tried again and with phone locked got a call and pressed sensor with screen on and nothing happened. Tap power first then touch sensor and it should unlock. I don't have gesture nav so I can't rest that part.
masri1987 said:
wth , so i have a phone call ongoing, i place my finger on theFP sensor .
i swipe up to go home, nothing happens. , doesn't even ask me for a FP
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What gesture app are you using. Some will pause themselves when the phone is locked. When you answer the phone while it's locked the app may have paused it's self so it's not really running. That's why your swipe up to go home is not working
hatdrc said:
What gesture app are you using. Some will pause themselves when the phone is locked. When you answer the phone while it's locked the app may have paused it's self so it's not really running. That's why your swipe up to go home is not working
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Oneplus gestures app..
Also noticed it not working when google assistant is up either

Fingerprint icon - No tap to show?

So on my s10 i can tap the screen to reveal the fingerprint icon so that i know where i need to place my finger but this setting is missing from the note 10?
This means i have to double tap to wake the screen and then use the fingerprint scanner! Its much quicker the other way and enables me to bypass the lock screen altogether!
Anyone else know what iam talking about and do you have the setting on your note 10 plus ?
I can single tap the screen to get the sensor location. AOD is set to "tap to show". Hope that helps
cliffr39 said:
I can single tap the screen to get the sensor location. AOD is set to "tap to show". Hope that helps
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Oh interesting! Maybe AOD needs to be on so! AOD is off on my S10 but i can still tap to show the indicator. The settings on my S10 that give me that option are not available on my Note 10 +
cliffr39 said:
I can single tap the screen to get the sensor location. AOD is set to "tap to show". Hope that helps
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I tried that and it works but then the clock is displayed too which i dont want! Basically i can unlock the phone from sleep using my fingerprint and bypass the lockscreen but have no idea where to place my thumb! On the S10 you could tap to see an indicator but you cant on the Note 10 for some reason! You have to guess or else your forced to use the always on display
Blaalad12 said:
I tried that and it works but then the clock is displayed too which i dont want! Basically i can unlock the phone from sleep using my fingerprint and bypass the lockscreen but have no idea where to place my thumb! On the S10 you could tap to see an indicator but you cant on the Note 10 for some reason! You have to guess or else your forced to use the always on display
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If youre just unlocking it right after tapping it, why does it matter if the clock shows for a split second?
I turned off my AOD and tapping the screen brings up the place to touch without anything else...
Don't know why software experiences can be so different, I'm in Oz if that helps with a stock Exynos variant...

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