I picked up this phone on my local craigslist late last week (at $15, I could not resist), unlocked it, and have been using it. When compared to my moto Z play, I have to hold the fingerprint scanner longer to turn the phone on or off which for some reason is very frustrating. I do not believe this is a hardware limitation as the fingerprint response is instant if I turn the device on to my lock screen and then touch the fingerprint scanner.
Does anyone know if it is possible to correct this? At the moment, I have to touch the scanner for ~1 second before it will turn on/off my phone. If it were possible to change this to ~0.5 seconds, I would be a happy camper.
skotseno said:
I picked up this phone on my local craigslist late last week (at $15, I could not resist), unlocked it, and have been using it. When compared to my moto Z play, I have to hold the fingerprint scanner longer to turn the phone on or off which for some reason is very frustrating. I do not believe this is a hardware limitation as the fingerprint response is instant if I turn the device on to my lock screen and then touch the fingerprint scanner.
Does anyone know if it is possible to correct this? At the moment, I have to touch the scanner for ~1 second before it will turn on/off my phone. If it were possible to change this to ~0.5 seconds, I would be a happy camper.
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Click to collapse
Are you running stock software? If so, I'd try erasing and re learning your finger prints. I got an E4 for my daughter to use on WiFi - FP sensor is snappier and more accurate than my MZP. If that doesn't do it, I'd be inclined to think hardware issue.
dandrumheller said:
Are you running stock software? If so, I'd try erasing and re learning your finger prints. I got an E4 for my daughter to use on WiFi - FP sensor is snappier and more accurate than my MZP. If that doesn't do it, I'd be inclined to think hardware issue.
Click to expand...
Click to collapse
Well here is the thing: when the phone is on the lock screen (screen turned on and asking for fingerprint or pattern/pin) the fingerprint sensor is instant and always accurate. The only time I am seeing lag is when I hold to turn the screen on (the screen is off but holding the fingerprint sensor turns it on) or off (phone is on and unlocked but holding the fingerprint sensor turns off the screen).
Can you confirm that your daughters phone has a faster response when turning on/off the screen?
i've read from a handful of reviews that the scanner is just simply not as fast as the MZP or even g5+. could be a limitation of the processor? i moved from a MZP to the e4, definitely a noticeable difference in speed.
skotseno said:
Well here is the thing: when the phone is on the lock screen (screen turned on and asking for fingerprint or pattern/pin) the fingerprint sensor is instant and always accurate. The only time I am seeing lag is when I hold to turn the screen on (the screen is off but holding the fingerprint sensor turns it on) or off (phone is on and unlocked but holding the fingerprint sensor turns off the screen).
Can you confirm that your daughters phone has a faster response when turning on/off the screen?
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Click to collapse
Yep, the times I use it, it's normally from screen off condition, or from in use to lock/turn off screen.
I'll try to do a side by side tonight with my MZP
dandrumheller said:
Yep, the times I use it, it's normally from screen off condition, or from in use to lock/turn off screen.
I'll try to do a side by side tonight with my MZP
Click to expand...
Click to collapse
here's a link to a quick head-to-head video. What is apparent is that the other poster is indeed correct - MZP is slightly faster from touch to screen on, and touch to screen off. The difference is slightly more pronounced when waking than going to sleep. What isn't apparent from the video is the timing of the haptic feedback. On the MZP the vibration is triggered almost instantly at touch, with the bulk of the delay from touch to screen on happening after the vibration triggers. On the E4, the vibration occurs around the middle of the span from touch contact to screen on. This gives the impression in use, at least to me, of slightly more laggy sensor (on the E4) but slightly faster unlock times (on the E4).
Guess I don't have to be jealous of my kid's phone anymore. Was a cool experiment.
Related
Sometimes I have to knock knock twice in a row to turn on the device. It works well turning off, but on half of the times it won't turn on. Gotta do it twice. Anyone else encounter this?
Sent from my LG-D803 using Tapatalk 4
Brava27 said:
Sometimes I have to knock knock twice in a row to turn on the device. It works well turning off, but on half of the times it won't turn on. Gotta do it twice. Anyone else encounter this?
Sent from my LG-D803 using Tapatalk 4
Click to expand...
Click to collapse
I do not have that issue, but I have read in a few posts that it can be dependent on where you are knocking on the screen.
hd-renegade said:
I do not have that issue, but I have read in a few posts that it can be dependent on where you are knocking on the screen.
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Click to collapse
Yes! Excellent advice
Sent from my LG-D803 using Tapatalk 4
Brava27 said:
Yes! Excellent advice
Sent from my LG-D803 using Tapatalk 4
Click to expand...
Click to collapse
I think the biggest issue is knock speed.... mine works damn near 100% when I slowed down some, and knock slower like it showes at the end of the G2 commercials....
I think it's partially related to the proximity sensor. There are times when I can't get the knock on to work at all and when I hit the power button the screen shuts right back off.
Usually a few swipes over the sensor makes it work again. Sometimes I'll go in and turn the Knock On gesture off and back on and then it seems to work great for a while too.
csmith8507 said:
I think it's partially related to the proximity sensor. There are times when I can't get the knock on to work at all and when I hit the power button the screen shuts right back off.
Usually a few swipes over the sensor makes it work again. Sometimes I'll go in and turn the Knock On gesture off and back on and then it seems to work great for a while too.
Click to expand...
Click to collapse
This is my exact problem. The phone just decides it doesn't want to wake up with knock-on...but after I press the power button, it only turns on for half a second and it's out again. I never tried swiping over the sensor, but hopefully it works because it's mighty annoying when it does it during a call!
I wonder if there's a fix for this?
canecbr600 said:
I think the biggest issue is knock speed.... mine works damn near 100% when I slowed down some, and knock slower like it showes at the end of the G2 commercials....
Click to expand...
Click to collapse
this, if you are trying to do it like you did on the nokia n9 or nokia 8800 then it won't work
slow deliberate knocks are the only way
waiting on the g2 to arrive, but on my review unit, knock knock wouldn't respond correctly if i left the phone on the table, but if i picked it up, it would work nothing scientific here just an experience of one person and one prototype
I had the same issue... What fixed it is: 1. I found that the screen protector was hindering it somewhat. 2. Go to settings->display->screen-off effect-> and change it to simple. This REALLY seemed to help. Let us know!
in_dmand said:
I had the same issue... What fixed it is: 1. I found that the screen protector was hindering it somewhat. 2. Go to settings->display->screen-off effect-> and change it to simple. This REALLY seemed to help. Let us know!
Click to expand...
Click to collapse
I did notice it does seem to behave better when set to simple for the screen off animation.
My screen protector does have a cutout around the sensors. Keeping the sensor area clean enough to qualify as having OCD does seem to make it work properly the first time, every time. Maybe it's overly sensitive?
Edit: Scratch that. 30 seconds later it's behaving erratically again. Maybe it's not the fact that it's clean, but the swiping over the sensor that temporarily resolves it.
it also seems to work much better when knocking at the top of the screen where the statusbar would be.
So I ended up swapping the phone out over the weekend for a new one and now everything seems to work just fine. Seems to indicate that it's not a software problem, but rather a hardware issue with the proximity sensor.
Guys if your covering the sensors when turing the device screen on it will turn right back of on you. It's a feature LG implemented so the device wouldnt wake up in your pockets. Don't cover the sensors.
Need a little example? Grab your phone and cover the sensors and knock knock knock.You can knock till the cows come home but it will not turn on. Same thing goes for the power button but its a little delayed and will turn the screen on for half a sec and turn right back off. Practice not to do this because your phone isn't broken. There is actually a thread on this deep in the forums somewhere but its been forgotten now.
Walter21026 said:
Guys if your covering the sensors when turing the device screen on it will turn right back of on you. It's a feature LG implemented so the device wouldnt wake up in your pockets. Don't cover the sensors.
Need a little example? Grab your phone and cover the sensors and knock knock knock.You can knock till the cows come home but it will not turn on. Same thing goes for the power button but its a little delayed and will turn the screen on for half a sec and turn right back off. Practice not to do this because your phone isn't broken. There is actually a thread on this deep in the forums somewhere but its been forgotten now.
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Click to collapse
This is true however there are indications of problems with the proximity sensor as well. Some of the devices are behaving as if tree sensor is covered even when it's not.
Walter21026 said:
Guys if your covering the sensors when turing the device screen on it will turn right back of on you. It's a feature LG implemented so the device wouldnt wake up in your pockets. Don't cover the sensors.
Need a little example? Grab your phone and cover the sensors and knock knock knock.You can knock till the cows come home but it will not turn on. Same thing goes for the power button but its a little delayed and will turn the screen on for half a sec and turn right back off. Practice not to do this because your phone isn't broken. There is actually a thread on this deep in the forums somewhere but its been forgotten now.
Click to expand...
Click to collapse
Thanks for this.. Very insightful.. I tried it immediately LOL
I had the same issue. I have no case or screen protector on, and was not covering the sensor when trying to wake the phone. For some reason though, knocking wouldn't wake the phone, and pressing the power button would only turn the screen on for a few seconds. I want even given enough time to get past the unlock screen. I went into the store and they are sending me a replacement that should come in later this week. It doesn't happen all the time. It is much more noticeable after receiving a call though.
Sent from my VS980 4G using Tapatalk
Definitely is dependent on the proximity sensor. If i just have my thumb on the edge of the phone by the sensor it will display this problem. Even with my finger a half to one inch above it will do this. I will be paying close attention to the proximity sensor from now on when it doesn't work. Still have a few days to return and thought i had an issue but maybe not.
Sent from my VS980 4G using xda app-developers app
sometimes its also greasy fingers, at least in my case, rarely though
As long as you tap twice the same place it's working fine. If distance between first and second tap is greater than 1 - 1.5 cm it won't work.
Got the same problem on my d802...when i left the phone on my table for 2-3min it wont wake up on first knock knock even power key wake it up for 1sec after auto turn off again....even with no screen protector....i noticed that sometimes there is a delay about 5-10sec after knock knock and screen turns on....other thing i noticed when i knock on immediently after turning off it works 100%....BUT i also noticed when i knock on after a while it turns on and i can unlock got vibration and sound of the unlock but i cant see anything. Screen looks like its off but when i look closely i can hardly see widgets and when i set effect to tv out i can see the effect by pressing the power button...when i press the power button again screen turns on like normal...i noticed sometimes on a rerboot the lg bootlogo disapears the led is working an showing all colors but the boot animation is gone like the screen is off at the bootup...dont know why after the bootup the pin lock screen is showing up normal....sorry for my english^^
Hi,
I need to know something. I hope you'd help me.
On the g4 plus, how fingerprint scanning is working? the sensor is excited for finger's sense at all times or only when the phone's held in the hand ie when the phone detects a motion? Asking this 'cause I'm having some weird problem. My sensor doesn't sense my finger at all when I don't hold it in my hand. I just put a finger on the sensor when phone's absolutely still on the ground in sleep mode, not moving. But the sensor was unable to respond. I have to press it harder to make it detect my fingers. Quite irritating.
But the sensor properly detects and senses my fingers when the phone's in my hand. What could be the problem? Is the sensor defective or it's perfectly normal ?
It doesn't work when is horizontal on a table. If you press slightly harder, the phone moves (tilts "up" the top part a little) and it works.
Weird for me to test since I have registered only my thumbs. I never use it like that. On table I see the notifications and if I need to do something about them, I always lift the phone up from the table.
Mine (UK model) works just the same on the desk or in the hand. no added pressure required. maybe try re-doing the finger registration
Are you sure that the phone's in sleep mode when you touch the sensor? Just put the phone on table for 2-3 minutes and then try to touch the sensor without touching anything other than it. Could you please check it again... Can you unlock the phone?
SP1Viffer said:
Mine (UK model) works just the same on the desk or in the hand. no added pressure required. maybe try re-doing the finger registration
Click to expand...
Click to collapse
Mine (IN model) works perfectly in both situations...
jack_04 said:
Mine (IN model) works perfectly in both situations...
Click to expand...
Click to collapse
In that case, my replacement for the phone isn't unnecessary.
What I feel like when we move the phone a little then it activate s the FPS and it works fine.
But if the phone is stationary for some time and touching the FPS doesn't unlock.
So I think it's not a problem.
Mine works fine also... but I can't use the finger print sensor to sign in apps or remember passwords on the browser (I use chrome) ... I used to have a Galaxy S6 and it automaticaly asked me If I'd like to use the sensor for this ... but G4 don't.. can anybody help me with that? thanks
I bought a used V20 with a defective screen. I change it, everything work for fine, but i notice a strange behaviour with the second screen.
The second screen is always on and i can unlock it by only touching the finger print sensor. BUT at night (or in the dark), the second screen turn off and i need to press 2 times on the power button to wake the phone.
The Knock On feature doesn't work too in the dark.
The light sensor seems to work correctly.
I would love to post a video but i can't......
This is an issue or it is normal ??
Thanks for your help !
Sounds like Doze.
I don't find anything related to Doze or "standby" about this screen.
check "daily timeout" on Show when main screen off. Seem u turn this function on at night
David_26 said:
I bought a used V20 with a defective screen. I change it, everything work for fine, but i notice a strange behaviour with the second screen.
The second screen is always on and i can unlock it by only touching the finger print sensor. BUT at night (or in the dark), the second screen turn off and i need to press 2 times on the power button to wake the phone.
The Knock On feature doesn't work too in the dark.
The light sensor seems to work correctly.
I would love to post a video but i can't......
This is an issue or it is normal ??
Thanks for your help !
Click to expand...
Click to collapse
thophan1975 said:
check "daily timeout" on Show when main screen off. Seem u turn this function on at night
Click to expand...
Click to collapse
Don't seems to change anything
Could it me the last security update ??
I reset the phone today and same "issue"
David_26 said:
Don't seems to change anything
Could it me the last security update ??
I reset the phone today and same "issue"
Click to expand...
Click to collapse
Sounds like there is an issue with the proximity sensor (not light sensor).
It's setup to turn the second screen off as well as disable knock on if the phone is in your pocket. Even during daylight hours if you put your finger within an inch of the sensor when the main screen is off, it should trigger it.
It seems your sensor may just be messed up.
David_26 said:
Don't seems to change anything
Could it me the last security update ??
I reset the phone today and same "issue"
Click to expand...
Click to collapse
There are a few apps on the play store you can try to fix it if you are rooted. You could also try a sensor app to see if the proximity sensor is showing feedback properly although you might need to be rooted for the apps to show the proximity sensor properly (not sure). My note 4 had a hardware test in the service menu not sure how to do it on V20 though.
Same Issue
Edit: Resolved the issue. Please read this post. There is a small rubber gasket-type thing that sits in the hole of the phone's frame where the proximity sensor is positioned. That rubber gasket was not included with my replacement screen. I pulled the rubber piece out of my original, broken screen, and installed it into my replacement screen. I am no longer having issues with the phone in the dark.
I am experiencing the same issue. I have a T-Mobile LG v20 (H918) and I cracked the screen last week. I ordered a replacement LCD assembly and installed it myself. Everything works fine during the day or in a well lit room, but at night, in a dark room, I experience all of the issues you are reporting. I am finding other posts online with our same issue, but as of yet, no resolution.
Even though the second screen is set to always be on, at night, in a dark room, it turns off almost immediately after locking the phone. It is almost as if the phone is in a "deep sleep" or something, because the following also occurs:
Knock On will not wake the phone
Fingerprint sensor will not wake the phone
Even connecting to the phone via AirDroid / AirMirror the phone doesn't wake
Need to press the power button multiple times to wake phone
Providing a light source immediately turns on second screen and resolves all issues
I am having this slight delay in the fingerprint unlock when the device is off. There is a momentarily black screen. It is fine when I use the fingerprint to unlock the device when it is on. Please gimme some solution to this problem.
It makes sense to have a moment delay. I'd your phone is asleep, the device needs to recognize the touch, wake up the sensor, then wake up some of the CPU to compare the read vs. stored fingerprint, as well as get the stored from memory. There will be a short delay in there.
Is anyone having issues with either/both the touchscreen or the fingerprint scanner?
Regarding the screen, I went out last night and the phone remained inside my jeans pocket. Was looking through it this morning to find I have 6 sets of 30 burst photos (of the inside of my pocket), a load of single photos (of the inside of my pocket) and a 10 minute video taken inside my pocket! It looks as though the shortcuts on the lock screen have been activated to open the camera but the phone never left my pocket, I never touched the screen so its a little worrying how easy it is to do that!
And on the fingerprint scanner, I'm finding it really slow to unlock the phone on occasion, and many times it will take several attempts to recognise my print - this is especially true if I have any kind of small "contaminant" on my fingers. Slightest bit of sweat or moisture and it won't work. In fact, its really hard to use unless you have completely clean and 100% dry hands. My GF had a Nexus 5X (before it developed bootloop problems and had to be returned) and the scanner on that was pretty much flawless and would recognise prints in whatever conditions.
Anyone else finding these kinds of issues?
kingdave82 said:
Is anyone having issues with either/both the touchscreen or the fingerprint scanner?
Regarding the screen, I went out last night and the phone remained inside my jeans pocket. Was looking through it this morning to find I have 6 sets of 30 burst photos (of the inside of my pocket), a load of single photos (of the inside of my pocket) and a 10 minute video taken inside my pocket! It looks as though the shortcuts on the lock screen have been activated to open the camera but the phone never left my pocket, I never touched the screen so its a little worrying how easy it is to do that!
And on the fingerprint scanner, I'm finding it really slow to unlock the phone on occasion, and many times it will take several attempts to recognise my print - this is especially true if I have any kind of small "contaminant" on my fingers. Slightest bit of sweat or moisture and it won't work. In fact, its really hard to use unless you have completely clean and 100% dry hands. My GF had a Nexus 5X (before it developed bootloop problems and had to be returned) and the scanner on that was pretty much flawless and would recognise prints in whatever conditions.
Anyone else finding these kinds of issues?
Click to expand...
Click to collapse
Among the other problems, I have one with AOD that tends to disappear even if active.
I also have issue with the fingerprint reader.
Nothing, unfortunately, has changed with the 10L update.
I hope they will do a better work with the next big update promised with the G6 + presentation.
MuttleyMB said:
Among the other problems, I have one with AOD that tends to disappear even if active.
I also have issue with the fingerprint reader.
Nothing, unfortunately, has changed with the 10L update.
I hope they will do a better work with the next big update promised with the G6 + presentation.
Click to expand...
Click to collapse
The problem with AOD could be related to the fact that something is covering the proximity sensor. If the sensor is covered AOD won't display.
My fingerprint has no problem, and my screen never unlocked inadvertently.
Inviato dal mio LG-H870 utilizzando Tapatalk
Erpinoob said:
The problem with AOD could be related to the fact that something is covering the proximity sensor. If the sensor is covered AOD won't display.
My fingerprint has no problem, and my screen never unlocked inadvertently.
Inviato dal mio LG-H870 utilizzando Tapatalk
Click to expand...
Click to collapse
No, the device stays always on the table with nothing on/near it. This issue is relatively new.
The fingerprint reader for some reason in unable to read nothing so I have to unlock with PIN and restart the device.
I think it's more likely that you accidentally managed to double-press the volume down button and activated the camera that way.
At least you can disable those shortcuts. One of my pet peeves is front-facing home buttons that can turn on the screen, that stick out and are easy to activate in your pocket.
The fingerprint reader seems pretty good to me although I've definitely noticed it doesn't work if my finger is wet. Maybe I'm just happy it works a million times better than my old phone.
jdock said:
I think it's more likely that you accidentally managed to double-press the volume down button and activated the camera that way.
At least you can disable those shortcuts. One of my pet peeves is front-facing home buttons that can turn on the screen, that stick out and are easy to activate in your pocket.
The fingerprint reader seems pretty good to me although I've definitely noticed it doesn't work if my finger is wet. Maybe I'm just happy it works a million times better than my old phone.
Click to expand...
Click to collapse
Nope, first thing I did when I got the phone was to turn the shortcut keys off - I previously had the G4 and dislike these on that, so turned them off here for the same reason
kingdave82 said:
Is anyone having issues with either/both the touchscreen or the fingerprint scanner?
Regarding the screen, I went out last night and the phone remained inside my jeans pocket. Was looking through it this morning to find I have 6 sets of 30 burst photos (of the inside of my pocket), a load of single photos (of the inside of my pocket) and a 10 minute video taken inside my pocket! It looks as though the shortcuts on the lock screen have been activated to open the camera but the phone never left my pocket, I never touched the screen so its a little worrying how easy it is to do that!
And on the fingerprint scanner, I'm finding it really slow to unlock the phone on occasion, and many times it will take several attempts to recognise my print - this is especially true if I have any kind of small "contaminant" on my fingers. Slightest bit of sweat or moisture and it won't work. In fact, its really hard to use unless you have completely clean and 100% dry hands. My GF had a Nexus 5X (before it developed bootloop problems and had to be returned) and the scanner on that was pretty much flawless and would recognise prints in whatever conditions.
Anyone else finding these kinds of issues?
Click to expand...
Click to collapse
I have had the camera seem to turn on by itself a few times, but not to the extent that you are describing. My finger print scanner works fine in terms of recognizing my print and unlocking my phone. I have a completely different issue with my finger print scanner though. When I try to clean my fingerprint scanner with a cloth, it triggers the phone to dial 911! It has done it many times from my pocket too. When it did it in my pocket, I could not for the life of me figure out what was triggering the 911 calls. The first few times I didn't even know that it had dialed 911 until 911 dispatch called me back. I finally figured it out one day when I was purposely rubbing the fingerprint scanner with a cloth to clean it, and sure enough, it dialed 911. Sometimes if I just rub it with my bare finger it will dial 911. It's VERY annoying, for me and the 911 operators both I imagine!