Unable to use fingerprint sometimes on lock screen - Verizon LG V10

Hey so my v10 sometimes doesn't allow me to unlock my phone with my fingerprint and I have to manually enter my password. Is this a problem for anyone else or just me? I have changed the fingerprints and changed lock screen from knock code to pattern but neither helped.

Yes I get this too. I know it will force manual entry after reboot but I experience this throughout the day from time to time. Its inconsistent.

Do you use an app to put the phone to sleep? There is a known issue in Marshmallow where fingerprint unlock will not work if the phone is put to sleep via an app rather than the power button.

I do double tap the status sometimes to turn the screen off but I don't think it's that. And no I don't use an app to turn off the screen

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Horrible Work Around for Lock Screen PLZ Help

Hello everyone,
I found a big time glitch on the lock screen. If your screen is locked and you let it time out that top layer with the time on it appears when you cut it back on. Just move it out the way and your phone is unlocked without a pattern code needed. How do I stop this?!?!?
mtorre5 said:
Hello everyone,
I found a big time glitch on the lock screen. If your screen is locked and you let it time out that top layer with the time on it appears when you cut it back on. Just move it out the way and your phone is unlocked without a pattern code needed. How do I stop this?!?!?
Click to expand...
Click to collapse
DUDE, do you read any of tech blogs? This was reported over the weekend and ATT and Samsung are working on a fix. Just sayin its a known issue and I don't believe a fix has been issued.
Actually I dont, but thanks for the info
Go to
Settings/location and security/timeout
And set the lock screen to immediately
Sent from my SAMSUNG-SGH-I777 using XDA App
jank0023 said:
DUDE, do you read any of tech blogs? This was reported over the weekend and ATT and Samsung are working on a fix. Just sayin its a known issue and I don't believe a fix has been issued.
Click to expand...
Click to collapse
A fix has not been issued but a workaround has been.
I have a feeling none of you will like the actual fix. The work around more like a fix. The only bug here is the pattern unlock screen showed up when it shouldn't. And it has nothing to do with security breach or not.
mtorre5 said:
Hello everyone,
I found a big time glitch on the lock screen. If your screen is locked and you let it time out that top layer with the time on it appears when you cut it back on. Just move it out the way and your phone is unlocked without a pattern code needed. How do I stop this?!?!?
Click to expand...
Click to collapse
NO WAY! I'm so glad you pointed this out for all of the rest of us.
dayv said:
Go to
Settings/location and security/timeout
And set the lock screen to immediately
Sent from my SAMSUNG-SGH-I777 using XDA App
Click to expand...
Click to collapse
Working as intended ... This is the setting to make it work how you want!!!!
my personal fix was to use No Lock to turn off that stupid swipe thing, and added WidgetLocker.
moopile said:
Working as intended ... This is the setting to make it work how you want!!!!
Click to expand...
Click to collapse
No, still not working properly. I hope at&t gets a fix soon
Sent from my SAMSUNG-SGH-I777 using xda premium
Dxtra said:
No, still not working properly. I hope at&t gets a fix soon
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
I set my timeout to "Immediately", let the screen go off, and have to enter pattern to get back in.
Dxtra said:
No, still not working properly. I hope at&t gets a fix soon
Sent from my SAMSUNG-SGH-I777 using xda premium
Click to expand...
Click to collapse
Here is how is suppose to work (when you have the timeout in Lock settings, not display settings, set to anything other than immediately:
1. You power on the phone, you need enter the unlock pattern.
2. You hit power button or let the display time out, the phone screen goes off.
3a. If you wake up the phone within the timeout period you set above, you should be at a normal swipe screen without the need to enter your unlock pattern.
3b. If you wake up the phone after the timeout period, you should see a pattern unlock screen and you need to enter the unlock pattern to unlock your phone.
The bug is in 3a, it showed the pattern unlock screen instead of the normal swipe screen. That's what confuseed a lot ppl. There is no security risk here. It works as it is designed to do but Samsung made a mistake to display a wrong screen.
This timeout feature is designed to be a convience feature so that you don't have to pattern unlock your phone frequently if you're actively using it. You will only be asked for pattern unlock if the phone idles for certain amount of time you set. If you don't like this and like to be asked to unlock everytime, you should set the time out to immediately anyway.
foxbat121 said:
Here is how is suppose to work (when you have the timeout in Lock settings, not display settings, set to anything other than immediately:
1. You power on the phone, you need enter the unlock pattern.
2. You hit power button or let the display time out, the phone screen goes off.
3a. If you wake up the phone within the timeout period you set above, you should be at a normal swipe screen without the need to enter your unlock pattern.
3b. If you wake up the phone after the timeout period, you should see a pattern unlock screen and you need to enter the unlock pattern to unlock your phone.
The bug is in 3a, it showed the pattern unlock screen instead of the normal swipe screen. That's what confuseed a lot ppl. There is no security risk here. It works as it is designed to do but Samsung made a mistake to display a wrong screen.
This timeout feature is designed to be a convience feature so that you don't have to pattern unlock your phone frequently if you're actively using it. You will only be asked for pattern unlock if the phone idles for certain amount of time you set. If you don't like this and like to be asked to unlock everytime, you should set the time out to immediately anyway.
Click to expand...
Click to collapse
Have you actually gave this try. I completely understand how the time out period works and I guess we all do, but your not getting where the bugs are in plural because there's two I found.
Bug 1. No matter what's your time out, it's not supposed to let you in the phone without you actually putting the password. If you let the screen sleep in the lock screen next time you wake the phone there's no password to put in. It let's you in
Bug 2. If you set time out to immediately. The Password protection lockscreen disabled right after you unlock your phone.
Sent from my SAMSUNG-SGH-I777 using xda premium
Dxtra said:
Bug 1. No matter what's your time out, it's not supposed to let you in the phone without you actually putting the password. If you let the screen sleep in the lock screen next time you wake the phone there's no password to put in. It let's you in
Click to expand...
Click to collapse
That's the whole reason why you have a timeout setting in lock screen. If you wake up the phone within timeout (timeout of the lock screen, not timeout of the display), you don't have to unlock it. If you don't like this, set to immediately.
I don't use pattern lock (which is ridiculously easy to crack). I have exchange policy on my phone with PIN password. It does not suffer from any bugs like pattern lock.
Don't understand what your mean in bug #2.
foxbat121 said:
That's the whole reason why you have a timeout setting in lock screen. If you wake up the phone within timeout (timeout of the lock screen, not timeout of the display), you don't have to unlock it. If you don't like this, set to immediately.
I don't use pattern lock (which is ridiculously easy to crack). I have exchange policy on my phone with PIN password. It does not suffer from any bugs like pattern lock.
Don't understand what your mean in bug #2.
Click to expand...
Click to collapse
Dude, it's buggy period. Before you even go any further. Give the lock screen a try. It's all around the Internet.
http://www.youtube.com/watch?v=Jvbjr4tf_Nk&feature=youtube_gdata_player
Sent from my SAMSUNG-SGH-I777 using xda premium
I see, you're the one that refuse to listen/read.
foxbat121 said:
I see, you're the one that refuse to listen/read.
Click to expand...
Click to collapse
I like the feature; same as on Honeycomb.

[Q] Unlocking your phone in different ways

I was wondering if there was a way to do this. You wake up your phone, it's locked. You hold the sleep button and the phone goes straight to the home screen.
Or even better, you wake the phone up by holding the sleep button and the phone idles on the lock screen for a second and then jumps to the home screen (similar to iPhone's new fingerprint scanner, but without the scanner). Maybe the lock screen can have a fake pin lock to mislead people using my phone.
I've been waiting for this for years but I don't think anyone's developed it. Would there be a way I could do it with Tasker? Or maybe there's something on xda that I can download for it to work? I am rooted with a Note 3.
Also, if there are any other revolutionary new lockscreen's out there, let me know! I'm not into the whole typing a password to unlock because everyone sees the password anyway. Plus it's tedious. Any ideas?

CM 12.1 Lock screen woes

Help! In trying to get my swipe lock screen to self-actvate when the screen turns off, I've managed to make the problem worse.
I made it PIN lock, intending to return to Swipe after testing. Now there are NO options for locking except PIN and no obvious way to clear it. I've read all kinds of suggestions, none of which worked. Surely this is not a "feature"?
Edit: Oh, duh. I can't believe this isn't documented somewhere. So you just go to the settings menu under Lock Screen and it says PIN. You touch that and it asks you to confirm your PIN. When you do you are presented with all the options again (including Swipe). Whew! Now if only the #%@#$ thing would engage when the screen turns off like it should!

Fingerprint sensor acts like unlock button

Hi guys,
I have received an update lately (MIUI Gloval 8.1 Stable - 8.1.1.0) and my struggle began. My problem is that now every time if I touch the fingerprint sensor the phone unlocks. It's REALLY annoying guys. Sometimes I lock my phone and put it down and the screen unlocks because accidently I touched it. Fingerprint is disabled, furthermore I have no lockscreen whatsoever have enabled. The fingerprint sensor at the back acts exactly like the unlock button on the side. How the hell can I disable this annoying function?
Thanks !!!
Settings - Lock Screen & Password - Manage Fingerprints - Enter Password if you have one - Apply Fingerprint to Lock Screen - choose disable?
Fingerprint wakes up the device if u haven't added any fingerprints.
That's a thing in marshmallow MIUI (even on the beta builds), it's not a bug, tapping on fp without any registered FPs wakes up the screen.
Furthermore, u said that there's 'NO LOCKSCREEN' you kept(so i assume there's neither swipe to unlock screen) so fp is waking your device everytime,and consequently,screen gets unlocked.
I see. Any way to completely disable this function? I dont want that sensor to work at all.
Me too, I have the same problem, the fp sensor wakes up the screen when I'm touching it accidentally most of the time. How can we disable this annoying "feature"?

[Q] Screen Lock/Off without Root

Hi All,
i have an unrooted Pixel XL (Damn Verizon...)
i want to be able to turn the screen off with a gesture, and use the fingerprint to turn it on. however, if i turn it off without the button, pressing the fingerprint says the device is "locked by admin" and i need to insert the pattern.
the only way around this is to use an app that makes the screen go black for 10 seconds.
any way to shorten that time or even better, do it for real without root?
thanks guys.
IIRC, one will be forced to enter the code/pattern every 48 hours or so if fingerscanner is enabled. Probably to increase security and prevent you from forgetting the code after one year of never having to input it.
This behaviour will also be invoked if the fingerprint is misread 4-5 times in a row, or if the phone is locked/turned off with any other means than the power button or screen timeout.
So if an app locks the phone, you will have to enter the code to unlock it regardless if fingerprint is enabled or not.
Some roms support turning the phone off when tapping 2 or 3 times on the home button.

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