Double Tap Wake Up - Knock On incompatibility - G4 Q&A, Help & Troubleshooting

Hi guys, first time poster here. I have an LG G4 running GiffGaff in the UK.
I love the Knock Code-to-unlock option on this phone, but I am annoyed by the fact that quite often my phone would wake up to the Lock Screen when I tried to enter my Knock Code with the screen off (instead of unlocking), and then entering the Knock Code then would just turn the screen off. I assumed this was because my Knock Code featured a double tap in it, and it was being detected before the Knock Code.
I found some instructions on the web to turn off the Double Tap to Wake Up option using QuickShortcutMaker (i.e. like this [EDIT Can't post a link yet] but I can't guarantee that is the exact link I originally found). However, the phone still wakes up to the Lock Screen with a double tap and I still have the same issue with the Knock Code only getting as far as the lock screen. This happens probably 50% of the time, and anecdotally seems more likely to happen if I have something on my lock screen, such as Whatsapp notifications or music controls. Once on the Lock Screen though, no combination of taps does anything, i.e. it doesn't turn back off on a double tap nor unlock with a Knock Code (no red LED flash either).
What I really want is to go from a screen off straight to unlocked using the Knock Code, and never use the Double Tap to wake or sleep (I have a power button and a shortcut on my Nova Launcher to do that). Has anyone got any solutions?
Thank you
Mark

Related

[Q] Swipe Screen Lock Behaviour

I have my Screen lock set to "Swipe" (the default) but I feel it's too easy to unlock the phone. As well as swiping where it says "Swipe up or down to unlock", you can also pull down the notifications menu and then go into Settings and press the Back button (which unlocks the phone rather than going back to the lock screen, which is the behaviour I would expect and want). Also, if I swipe across to the camera and press the Back button, this also unlocks the phone (again, I expect it to go back to the lock screen).
However, if I change the Screen lock to Pattern or PIN, the lock screen actually functions as expected and I cannot pull down the notifications menu or leave the lock screen via the camera.
Is there any way of replicating this behaviour with the Screen lock set to "Swipe"? In other words, I want to swipe to unlock, but I don't want to be able to pull down the notifications menu or leave the lockscreen unless I have actually swiped to unlock.
Well I think this is the standard and right behavior for all phones. It was the case with the GS2 too. There's no point in disabling accessing the notifications menu when there aren't any locks. It's only makes sense when you lock your device with pattern or pin.
Unfortunately I don't know any apps or modification that can help.
Rototti said:
Well I think this is the standard and right behavior for all phones. It was the case with the GS2 too. There's no point in disabling accessing the notifications menu when there aren't any locks. It's only makes sense when you lock your device with pattern or pin.
Unfortunately I don't know any apps or modification that can help.
Click to expand...
Click to collapse
Hmm, OK - thanks for the information. The point is that it is too easy to accidentally unlock the phone - the lock screen should, well, lock the phone. I guess I could have a pattern or PIN unlock but it should be an option to have the same behaviour with swipe.
alex_hk90 said:
I have my Screen lock set to "Swipe" (the default) but I feel it's too easy to unlock the phone. As well as swiping where it says "Swipe up or down to unlock", you can also pull down the notifications menu and then go into Settings and press the Back button (which unlocks the phone rather than going back to the lock screen, which is the behaviour I would expect and want). Also, if I swipe across to the camera and press the Back button, this also unlocks the phone (again, I expect it to go back to the lock screen).
However, if I change the Screen lock to Pattern or PIN, the lock screen actually functions as expected and I cannot pull down the notifications menu or leave the lock screen via the camera.
Is there any way of replicating this behaviour with the Screen lock set to "Swipe"? In other words, I want to swipe to unlock, but I don't want to be able to pull down the notifications menu or leave the lockscreen unless I have actually swiped to unlock.
Click to expand...
Click to collapse
widget locker has pretty fine control over that sort of thing, including a disable notification bar toggle. i'm not sure if that actually works, though: i'm using delayed lock as well and that overrides some things.

[Q] sometimes screen won't turn on when I double tap to wake.

Hello,
I just bought LG G4 for a week . It perfect in every way, I love camera so much.
But I have one problem ,sometimes double tap to wake is not work properly no matter I try to knock ( knock slow or fast)
Until I need to press the button at the back, and then screen is turn on and I can use knock on again.
Is my G4 is normal ?
Thank you for your answer
Jo
It happens. For many it's rare and others it's more common. Mainly it's because of the touchscreen issues the g4 has.
Happens occasionally for me. Just tap a little harder.
ange1us said:
Hello,
I just bought LG G4 for a week . It perfect in every way, I love camera so much.
But I have one problem ,sometimes double tap to wake is not work properly no matter I try to knock ( knock slow or fast)
Until I need to press the button at the back, and then screen is turn on and I can use knock on again.
Is my G4 is normal ?
Thank you for your answer
Jo
Click to expand...
Click to collapse
If you have a knock code set up, try tapping the knock code instead of double tap. Occasionally, even when the phone should be unlocked, it'll wake up from the knock code but not the double tap. I discovered this when I got frustrated and double tapped repeatedly, then the screen came on and said if I entered the knock code incorrectly one more time I would be locked out.
ange1us said:
But I have one problem ,sometimes double tap to wake is not work properly no matter I try to knock ( knock slow or fast)
Jo
Click to expand...
Click to collapse
Same problem here, my phone looks like is deeply sleeping
i have to try tapping at least 3-4 times in order to wake it up,
it begins to be frustrating! If it helps i have a 10B fw
Mine can work even with a very light touch, almost like a normal finger press to select an icon when the phone is on. Usually I would tap somewhat harder, but out of curiosity I tried a very light touch and it still worked to wake the phone.
Try tapping on the upper half of the screen. Sometimes the Smart lock is activated after 4 hours of un use.
Sent from my LG G4 H815 USA 4G LTE TMO
KingFatty said:
Mine can work even with a very light touch, almost like a normal finger press to select an icon when the phone is on. Usually I would tap somewhat harder, but out of curiosity I tried a very light touch and it still worked to wake the phone.
Click to expand...
Click to collapse
it doesn't matter if you tap lightly or harder
this is not a resistive type of screen (like in the old days where you have to tap harder for the screen to register touches), but capactive
capactive screens don't differentiate between taps - every tap is the same
the issue is with LG - this is a known bug where some taps do not register and thats why double tap to wake doesn't work properly
this has been a number 1 problem for me with this phone
I have to tap like a maniac most of the time, before phone will wake up..
For awhile the G2 had a similar issue. One trick that helped me: on your last tap, hold it for a bit longer. So if you you have it set to unlock when you double tap, instead of a quick tap, tap you would go tap, taaap. I know that sounds weird, but by holding the last tap it seemed to register the code better, for whatever reason.
Good luck! As always, YMMV.
Mine does this, especially when charging. Tapping on the top left works almost always.
Sent from my VS986 using Tapatalk
I have found that if you have any type of security lock on the phone it doesn't work when tapping in the area of the lock (knock code area or pin). Even when smart lock is enabled I have noticed only tapping in the upper third of the screen will the phone wake up.
I have more success with knock code when screen is off than double tap, but I don't like having the code so I deal with the missed taps. Can anybody with the latest firmwares chime in here? I haven't updated ls991 to zv5 yet cause I don't want to deal with the "1" bootloader thing
Guys its not a bug dont double tap the corners of your phone it will not work just tap middle of the screen. Always work for me
Sent from my LG-H815 using Tapatalk
phineous said:
If you have a knock code set up, try tapping the knock code instead of double tap. Occasionally, even when the phone should be unlocked, it'll wake up from the knock code but not the double tap. I discovered this when I got frustrated and double tapped repeatedly, then the screen came on and said if I entered the knock code incorrectly one more time I would be locked out.
Click to expand...
Click to collapse
Thanks, I had no idea I could tap the unlock code with the screen off! Works flawlessly, fast or slow!! Thanks again for this!!!
DylanTheVillian said:
Thanks, I had no idea I could tap the unlock code with the screen off! Works flawlessly, fast or slow!! Thanks again for this!!!
Click to expand...
Click to collapse
Glad this helped!
I've discovered that Smart Lock doesn't always unlock the phone when connected to a trusted bluetooth device (especially if the device isn't in use but just connected), or when using a trusted place but not enabling High Accuracy for location. In these cases, the knock screen is waiting on the blank screen and it won't take double tap to unlock.
I turned on High Accuracy locations and double tap almost always works at home. If the bluetooth device is in use (streaming media, etc.) double tap also almost always works too.
Hi all, i also have a tap issue on my lg g4, the lg service repairman said they would replace my front cover, is this the proper way to solve the tap/touchscreen issue? Please help me as i am really frustrated with my g4. Thanks and God Bless! John Aleta
johnaleta said:
Hi all, i also have a tap issue on my lg g4, the lg service repairman said they would replace my front cover, is this the proper way to solve the tap/touchscreen issue? Please help me as i am really frustrated with my g4. Thanks and God Bless! John Aleta
Click to expand...
Click to collapse
FWIW, If you are on Verizon, a new update has been released which is supposed to help with the touch issues.
Is this covered by the new LG warranty announcement?
phineous said:
If you have a knock code set up, try tapping the knock code instead of double tap. Occasionally, even when the phone should be unlocked, it'll wake up from the knock code but not the double tap. I discovered this when I got frustrated and double tapped repeatedly, then the screen came on and said if I entered the knock code incorrectly one more time I would be locked out.
Click to expand...
Click to collapse
My wake up double tap became intermittent a couple of weeks ago after flawlessly working for months.
Thanks for the tip :good:
Mine's worked great for 2 years. Just started being tempermental with no clear pattern of usage differences between when it does work and when it does not work. argggggggggggg

Screen off and lock - Without button?

I'm used to switch off the phone tap (or swipe) of the screen, without using the power button. But this method for HTC 10 is not working.. I tried to put different applications (for example Screen off and lock), but they are in conflict with the scanner - scanner is not working . Does anyone have any ideas?
Custm rom will give you this feature but you'll have to unlock your BL
The only app that can do this is screen lock pro by Prahallad, but it's a paid app.
It's achieves this via a workaround, which has a side effect that the screen is not actually locked until about 10 seconds after u initiate the lock.
Gestures in Nova Launcher can do this. I have it set to lock when I swipe down on the homescreen. The one catch to this (or any other third party solution) is that fingerprint unlock will be disabled until the device is locked with the power button.
chong81 said:
The only app that can do this is screen lock pro by Prahallad, but it's a paid app.
It's achieves this via a workaround, which has a side effect that the screen is not actually locked until about 10 seconds after u initiate the lock.
Click to expand...
Click to collapse
Thanx, u method is working...:good: ( Screen lock pro by Prahallad)
I discovered this behavior with the A9 and 6.0.1. What happens with a lock screen app, most will actually lock the phone, then when you try to use something like a double tap to wake, the phone acts as if it did a reboot, and requires a PIN to unlock. You can't use a fingerprint/face etc..upon a reboot...a PIN is always required. All the apps did this I tried.
The way I use a lock screen/wake is to 1) Root the phone, 2) Install Xposed, 3) install Gravity Box for MM, 4) Navigation buttons, 5) then use the Home button and set the double tap to Sleep.
Have to reboot after activating Gravity etc. You need to be familiar with Xposed and the modules/activating them.
Then if you double tap home to slepp. Then, also put your finger on the Fingerprint for example, and it unlocks and goes right to the screen. You can use the PIN/Face etc as well...but the lock programs always fooled the phone into thinking it rebooted, and only a PIN would unlock it..annoying. This method stops that, so you can still have security, and simply double tap to lock the screen, and easily wake the phone/unlock it with a variety of options.
Not sure if this is how you are using it, but none of the Lock screen apps will work. I've tried them all on the A9 6.0.1 MM. Only Rooting and Gravity Box will give you an ability to do something like a double-tap to sleep, without the reboot PIN always prompting you when you do unlock the phone.
wake On gesture
Miha2e said:
I'm used to switch off the phone tap (or swipe) of the screen, without using the power button. But this method for HTC 10 is not working.. I tried to put different applications (for example Screen off and lock), but they are in conflict with the scanner - scanner is not working . Does anyone have any ideas?
Click to expand...
Click to collapse
You can fine in app store
Tks giovanni
Is possible to lock the screen with power bottom, and one screen time out how to lock. nougat ,how, Tks giovanni.
Newby on HTC...Stock.
Miha2e said:
I'm used to switch off the phone tap (or swipe) of the screen, without using the power button. But this method for HTC 10 is not working.. I tried to put different applications (for example Screen off and lock), but they are in conflict with the scanner - scanner is not working . Does anyone have any ideas?
Click to expand...
Click to collapse
I personally use the double tap home on venom rom.. Works well.
Double tap screen will be kernel based, not sure how efficient it'll be on battery so I'd avoid it and use the double tap home key, not a massive difference.

Using Gravity Screen to wake phone when you pick it up

I was searching for a way to make Tasker wake phone when I pick it up, so I just have to at it to unlock it. In looking into this, I discovered Gravity Screen, which amongst other things, can wake your phone when you pick it up, straight to Face Unlock. It seems to work well but I'm not sure of the impact on battery. I'm not using it to lock the screen... Really only using it for the one thing.
https://play.google.com/store/apps/details?id=com.plexnor.gravityscreenofffree
What do you all think?
saccentekennedy said:
I was searching for a way to make Tasker wake phone when I pick it up, so I just have to at it to unlock it. In looking into this, I discovered Gravity Screen, which amongst other things, can wake your phone when you pick it up, straight to Face Unlock. It seems to work well but I'm not sure of the impact on battery. I'm not using it to lock the screen... Really only using it for the one thing.
https://play.google.com/store/apps/details?id=com.plexnor.gravityscreenofffree
What do you all think?
Click to expand...
Click to collapse
I've been using this app on my last two phones in order to be able to double tap the home screen on my launcher (Action Launcher) to turn off the screen, WITHOUT locking the phone. For some reason though, this no longer works on the OP5T, double tapping just simply won't trigger the screen off shortcut. Really disappointed in this, are you able to get this to work on yours?
I do also use its proximity sensor feature so that it automatically turns the screen on upon removal from my pocket, and it turns the screen back off once I put the phone back into my pocket, which triggers the angle needed to turn the screen off. That feature still works as intended, and better yet, preps the screen for the face unlock. And as far as I can tell, hardly uses any extra battery.
Elsydeon said:
I've been using this app on my last two phones in order to be able to double tap the home screen on my launcher (Action Launcher) to turn off the screen, WITHOUT locking the phone. For some reason though, this no longer works on the OP5T, double tapping just simply won't trigger the screen off shortcut. Really disappointed in this, are you able to get this to work on yours?
I do also use its proximity sensor feature so that it automatically turns the screen on upon removal from my pocket, and it turns the screen back off once I put the phone back into my pocket, which triggers the angle needed to turn the screen off. That feature still works as intended, and better yet, preps the screen for the face unlock. And as far as I can tell, hardly uses any extra battery.
Click to expand...
Click to collapse
Hmmm... I use Nova Launcher and I use the double tap to lock the phone. I've never wanted it to not lock. I wasn't aware that there is a double tap action in Gravity Screen? I'll have a look.
saccentekennedy said:
Hmmm... I use Nova Launcher and I use the double tap to lock the phone. I've never wanted it to not lock. I wasn't aware that there is a double tap action in Gravity Screen? I'll have a look.
Click to expand...
Click to collapse
It's not really within Gravity Screen itself, you'd have to use the launcher to set up the double tap on home screen to a shortcut. From there, you can pick one of Gravity Screen's shortcuts that allow you to either just turn off the screen, or do a persistent off screen, where you have to use the power button to bring it back on. I believe the problem I had with using the double tap to lock screen feature built into the launchers is that it forces you to have to enter in a password afterwards...face unlock or fingerprint do not work.
Elsydeon said:
It's not really within Gravity Screen itself, you'd have to use the launcher to set up the double tap on home screen to a shortcut. From there, you can pick one of Gravity Screen's shortcuts that allow you to either just turn off the screen, or do a persistent off screen, where you have to use the power button to bring it back on. I believe the problem I had with using the double tap to lock screen feature built into the launchers is that it forces you to have to enter in a password afterwards...face unlock or fingerprint do not work.
Click to expand...
Click to collapse
Hmmm. Not true with Nova. I double tap to lock and I can use fingerprint to unlock. However, I believe that I requires root for this lock method. Do you have root?
saccentekennedy said:
Hmmm. Not true with Nova. I double tap to lock and I can use fingerprint to unlock. However, I believe that I requires root for this lock method. Do you have root?
Click to expand...
Click to collapse
Nope, I don't have root. I did try the same shortcuts with Nova, and it didn't work there either.
have used the app on my old OPO.. now on 5T it's just perfect.. just pick up the phone.. and prepare for landing on homescreen without any tap or button press
does not consume a lot of battery
I've used this in the past as a way to turn on the screen when it comes out of my pocket
https://play.google.com/store/apps/details?id=com.tf.wakeongesture
This application wakes up your phone, and it works well on my OP5T, it's called "Always on AMOLED"you can download it from F-Droid open source apps, Yalp Store and Google Play. I like that it is low on resources, double tap wake up screen option, lock screen clock, date, battery, custom message and notifications.

Is there a way to pass the lock screen and go directly to home screen?

Hi All,
New to Samsung phones and upgrading from a Motorola X Pure Edition. The Samsung is an upgrade in many, many ways. It's sophisticated and will make the user feel sophisticated. But it has a few downsides too (camera) but I'm working to get the phone to how I think it should be.
I have Always On Display enabled. But when the phone is not locked, I can double tap on the screen and then instead of going to the home screen, it just goes to the lock screen which I then have to swipe up again for.
This is like passing through two locked gates in order to get to the home screen and this can be annoying. I need to open my phone quick or minimize distractions.
Is there a way to bypass the lockscreen? The fingerprint sensor is not very good and if I have Smart Lock enabled and the phone was turned off but is not locked, it would be great to just double tap on the screen and go directly to the home screen.
Thanks.
I think this is the only way. But keep in mind it will completely disable any kind of lockscreen security.
Yeah, I'm not trying to disable security. Thanks anyway.
I just want to go directly to my home screen when the phone is off but unlocked due to smart unlock.
I had the same problem. Instead of having AOD on all the time I set it to 'tap once' to open AOD, but I realised it's basically a secondary lock screen, so I disabled the AOD completely and just use the lock screen instead, it not only provides more info than the AOD but it's also a lock screen where the AOD is just a novelty and an extra gate. I just double tap to wake the lock screen instead of single tap to open AOD.
Vicxx said:
I had the same problem. Instead of having AOD on all the time I set it to 'tap once' to open AOD, but I realised it's basically a secondary lock screen, so I disabled the AOD completely and just use the lock screen instead, it not only provides more info than the AOD but it's also a lock screen where the AOD is just a novelty and an extra gate. I just double tap to wake the lock screen instead of single tap to open AOD.
Click to expand...
Click to collapse
I took your advice and turned off AOD. Phone is better this way, and I'm not missing much with the AOD off.
Thanks.

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