Black screen lg g4 - G4 Q&A, Help & Troubleshooting

So, here is a situation: When the phone is locked and i try to unlock it, sometimes, the screen stay off even if it's working. To unlock the device i have to wait or i have to remove the battery.
The same thing occur when sensor prossimity it's on during the calling, and the screen come back to work when the call it's finished.
How can i resolve this problem?

Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.*
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.*
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.*
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.*
5. Find "Back to the MainList", enter.*
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.
---------- Post added at 08:34 PM ---------- Previous post was at 08:33 PM ----------
sampathkumar2811 said:
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.*
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.*
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.*
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.*
5. Find "Back to the MainList", enter.*
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.
Click to expand...
Click to collapse
dialer code is *#546368#*815# for marshamallow

Related

How Do You Acvtivate the Slide-to-Unlock Feature in 6.5

I'm running the latest nfsfan 6.5 rom
I'm not talking about S2U2, I'm talking about what everybody with 6.5 seems to have when they turn their phone screen on. A lock slider near the top of the screen located in the center that you can slide either right or left to unlock.
I've looked around my setting but see no mention of it so I'm using S2U2 in the meantime.
Start button, then "Lock" at the bottom of the screen?
scirio said:
I'm running the latest nfsfan 6.5 rom
I'm not talking about S2U2, I'm talking about what everybody with 6.5 seems to have when they turn their phone screen on. A lock slider near the top of the screen located in the center that you can slide either right or left to unlock.
I've looked around my setting but see no mention of it so I'm using S2U2 in the meantime.
Click to expand...
Click to collapse
start>setting>system>lock> put any kinda lock you want.. >lock in 0 min.> ok> turn off screen> turn it on
You could also try csdevctrl. It locks the phone when after the device has waken up.
http://forum.xda-developers.com/showthread.php?t=386451
You can also hold down the end key which will bring up a quick menu.
My friend installed 6.5 and his lock screen pops up everytime he turn the screen on. He said it was a very basic instal, no extra cabs or customization.
When I do
start>setting>system>lock> put any kinda lock you want.. >lock in 0 min.> ok> turn off screen> turn it on
Click to expand...
Click to collapse
it forces me to put in a password. That is not what i want and it's time consuming.
Start > Lock - works but i wish it would just require a slide whenever i turn the screen on
wtf
the way i use it is to hold the End button and automatically locks the screen, that is the best way i have found to use it without having to input a password to unlock, plus i dislike to have 3rd party software to do stuff that the OS should be capable of doing in first place.
http://forum.xda-developers.com/showthread.php?t=505032
Download the WWE-Chobit Company SmartLock 1.7E.cab and install. This will show up in your settings and give you some check boxes that will make life easy.
I tired Cho's app, it messed up my touch keypad.
Had to remove to be able to type letters instead of symbols.
No joy here.
WR
How to activate slide to unlock in winmo 6.5
You can have the screen lock and unlock it with or without a password. Having it with a password lets the phone lock automatically after a specified amount of time. Conversely, without a password you must lock it manually to display the lock screen with only slide to unlock to access the phone.
Just try de-selecting the "Prompt if unused for" box in the lock screen settings:
Step 1: Start menu/settings/lock [Then clear the checkbox]
The password "type" grays out and the "password" and "confirm" boxes clear. Hit OK and it will allow you to unlock without a password by sliding to unlock. The only thing missing is automatically locking after a certain period of time; so you have to manually lock each time by pressing Start, and the Left soft-key at the bottom of the screen (Lock).
You can also change your power settings to make this process a little more automatic. You can have the screen turn off automatically without having to press the power button after you do the start/lock maneuver.
Once you manually lock the phone, the screen will then turn off automatically. The next time you're ready to use the phone; press the power button-screen turns on-slide to unlock. Or if you get a call, you get the winmo 6.5 slide to answer screen (by changing the power setting this way, the phone doesn't power off, it goes into standby.
(This way you don't have to install anything, have conflicts with the ROM, and can prevent premature hardware button failure)
Step 2: Start/settings/system/power [Advanced tab: under "On battery power" select checkbox-turn off device if not used for and choose shortest time interval]
It won't turn off the phone, it'll just turn off the screen after the time you specify and you don't have to worry about accidental dials or button presses. Turn off backlight just dims the screen.
No need to press the power button to turn off the screen (changing the power settings makes it automatic), so once it's locked you can put it right in your pocket. When you're ready to use the phone again, press power and slide to unlock.
Start -> Settings -> Personal -> Buttons -> "End Key" Tab -> Select "Automatically execute the selected action:" -> Select "Lock device" -> OK
Hold the "End" button to lock device.
BustVZW said:
Start -> Settings -> Personal -> Buttons -> "End Key" Tab -> Select "Automatically execute the selected action:" -> Select "Lock device" -> OK
Hold the "End" button to lock device.
Click to expand...
Click to collapse
Lots of solutions to one problem that should not have occured in the first place. Why didn't you copy the iPhone/S2U2's behavior, MS?
Alreading mentioned here but install CSDevCtrl and in its settings
check box "lock when device wakes"

Proximity Sensor Re calibration?

I have an issue with the proximity sensor on a LG G4 H810 (AT&T).
Out of a batch of 5 devices, all using the same Verizon branded tempered glass screen protectors (on AT&T devices), one of them refuses to work with the glass protector installed.
It's crystal clear, but when its on there and you dial a number, the screen immediately turns off (black), and you cannot force it back unless the call is ended by the other person.
Taking the glass screen protector off, immediately resolves the issue. So i know this proximity sensor must be out of whack.
Any way to re calibrate that bugger?
The glass is reflecting back. The proximity sensor should not be covered up.
To re-calibrate proximity sensor in LG G4.
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Mine is H815.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.
Tried and waiting for results
I have tried the below steps.It seems fine for now.Will confirm after proper checking.
cym1124 said:
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277364#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After beboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will auto be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the the problem should be solved.
Click to expand...
Click to collapse
cym1124 said:
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277364#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After beboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the the problem should be solved.
Click to expand...
Click to collapse
This worked like a charm. I had installed a new tempered glass protector and the problem started. But after this working fine! Thanks a ton
Do you know happen the code for Tmobile version?
I want to prevent the phone from turning off because of the proximity sensor completely.
Sorry for my typo
Sorry for my typo, “277364#*#” should be corrected as “277634#*#” to enter hidden menu.
cym1124 said:
Sorry for my typo, “277364#*#” should be corrected as “277634#*#” to enter hidden menu.
Click to expand...
Click to collapse
Thanks, I got to hidden menu but I don't see device test. Could be disabled by tmobile.
The proximity sensor uses infrared (IR). IR doesn't go through glass. So probably no way to fix it other than getting a glass cutter and removing that section of glass.
is there a way to do this on verizon model?
Spookymyo said:
The proximity sensor uses infrared (IR). IR doesn't go through glass. So probably no way to fix it other than getting a glass cutter and removing that section of glass.
Click to expand...
Click to collapse
The proximity sensor can be re-calibrated.
Dont forget the phone screen is also covered with glass.
I know it can be recalibrated. I've done it on mine. I was just referring to the glass screen protector. The normal screen is directly touching the proximity sensor the glass screen protector isn't. It's a problem that's been mentioned before with the glass screen protectors that don't have a cut out for the proximity sensor.
cym1124 said:
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Mine is H815.
Click to expand...
Click to collapse
Thanks man, re-calibration of proximity sensor solved the problem...kudos...I have the same model, problem started after putting tempered glass protector.
crisra said:
is there a way to do this on verizon model?
Click to expand...
Click to collapse
Enter the codes using the dialer. Use the Verizon Diagnostics code to get into the MiniOS.
Verizon Diagnostics
Uses: Various Sensor tests, GENESIS MiniOS,
##228378
Verizon Hidden Menu
##PROGRAMxxx where xxx would be 986 for the VS986 model.
Location and MMS Debug Menu
##DEBUG
Feature Enable/Disable Menu
##FEATURE
EDIT:
Realized I did not include the service code. If asked for one enter six zeros: 000000
I went to do the sensor test, however after entering it I got an error message which read along the lines of 'proximity calibration fail' and it wouldn't do anything from there, and I still have the same issues. Any ideas?
cym1124 said:
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Mine is H815.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.
Click to expand...
Click to collapse
@cym1124 Pease add this code to your original post.
Just thought I would add a little to this thread since it is the first one that pops up during a google search and a LG representative just gave me instructions from it word for word. Even the typo (unless theres a typo in the manual or something).
I don't know why, but that code (277634) doesn't work on my phone. I think It may be an earlier beta or something.
Its att but it had an early software on it, 810 09e.
Here is the one that works. *#546368#*810# , I would assume that you could replace the 810 with whatever your model number is.
The code I found actually had 815 at the end.
I found this code at the bottom of the comments on a youtube video. So thanks to whoever that person is.
The second problem I had was I could not get into MT mode. Whenever it prompted me to restart, I chose ok and it did nothing.
Im not sure why it would work, but I just tried it about 5 times in a row finally (after 2 weeks of trying other soloutions) and it finally booted into genesis.
After that the normal instructions worked.
Side note. Apparently the software for 810 09e might not have its qfuse blown. meaning it could've been the only ATT phone g4 with an unlockable bootloader. But I thought that an update would fix my proximity issue. WORNG. well now we'll never know.
Anyways hope this helps someone out there. Even you LG tech reps.
Thank you @myphonesbetter, with your code, I was finally able to access the service menu. Sadly, everything but the first touch screen test option doesn't seem to be selectable.
coredump said:
Thank you @myphonesbetter, with your code, I was finally able to access the service menu. Sadly, everything but the first touch screen test option doesn't seem to be selectable.
Click to expand...
Click to collapse
Thought this might help..... press and hold the power button before selecting a option on screen.....
cym1124 said:
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Mine is H815.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.
...
Click to expand...
Click to collapse
@cym1124
For me, to access the Hidden Service Menu I needed to use: *#546368#*815#*
Apparently for Taiwanese model.
issue not resolved
it is showing proximity cal fail after sensor test

Tempered Glass and Move Sensor Problem

When I put Tempered glass to my G4 , move sensor is covered . Now when somebody call me and I Answer, my screen is black and I dont do anything until this person who called disconnect call. This is very big problem because when I Call to somebody and this person dont responisble i must restart phone through remove battery. In My opinion the best option is the off move sensor but i cant find how do this.. Please help me i dont know what to do :crying:
Domol™ said:
When I put Tempered glass to my G4 , move sensor is covered . Now when somebody call me and I Answer, my screen is black and I dont do anything until this person who called disconnect call. This is very big problem because when I Call to somebody and this person dont responisble i must restart phone through remove battery. In My opinion the best option is the off move sensor but i cant find how do this.. Please help me i dont know what to do :crying:
Click to expand...
Click to collapse
Seriously......remove, return or replace that cheap tempered glass of yours. And the problem solved XDDDDDDDD
내 LG G4 H815 USA사용 tapatalk에서 전송
This issue can be solved, try my solution.
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the the problem should be solved.
cym1124 said:
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the the problem should be solved.
Click to expand...
Click to collapse
WORKS !!! Thanks a lot !!

Lock screen issue

I recently bought a new lg g4. Sometimes when i try to switch on my device using pattern lock or swipe unlock, the screen gets timed out automatically before i can finish the pattern. Can somebody please help me?
You are blocking your light sensor, either with one hand, or with a screen protector.
info
dont cover light/proximity sensor(upper part of phone).if issue not resolved then you need to recalibrate proximity sensor.
Thanks a lot people. Currently I have removed my tempered glass screen protection, that has solved the problem which I was facing. Can you suggest the best tempered glass screen protector for this phone, which is not covering the sensors. I am currently living in UAE.
chowdhuryrohan247 said:
Thanks a lot people. Currently I have removed my tempered glass screen protection, that has solved the problem which I was facing. Can you suggest the best tempered glass screen protector for this phone, which is not covering the sensors. I am currently living in UAE.
Click to expand...
Click to collapse
After applying any tempered glass, you need to recalibrate sensor.
sampathkumar2811 said:
After applying any tempered glass, you need to recalibrate sensor.
Click to expand...
Click to collapse
Can you please help me how to do it? So that I can use a tempered glass without having any issues with any sensors. Also I would like to inform you that my screen was going black while on call. Once I removed the tempered glass, this issue has been resolved as well.
o re-calibrate proximity sensor in LG G4.
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Mine is H815.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.
sampathkumar2811 said:
o re-calibrate proximity sensor in LG G4.
This issue can be solved by re-calibration proximity sensor, you still can use screen protector with sensor covered up.
Mine is H815.
Follow steps below to re-calibrate proximity sensor(must with the glass protector is installed and which is sensor covered up)
1. TYPE "277634#*#" in phone dialer. Hidden Menu screen will show up.
2. Select "Device Test"->"MT", it will show "system will be restarted", then choose OK.
3. After reboot, GENESIS MiniOS 3.1 screen will show up, press "individual item+power" while power button is pressed.
4. Next, find "sensor test", enter it(do not block the proximity sensor), the proximity sensor will be automatically calibrated. Then block proximity sensor two times to exit.
5. Find "Back to the MainList", enter.
6. Press "Normal boot+power" while power butten is pressed to reboot system, done.
Now the problem should be solved.
Click to expand...
Click to collapse
Can you please tell me what could be causing the problem with the lockscreen issue that was posted before. Because once I removed the tempered glass, the lock screen issue and the screen going black while on call, both has been solved. Was it only that the proximity sensor was not working properly or was there any other sensors which was getting affected due to the tempered glass.
after applying tempered glass do the recalibrate as mentioned above.

possible device lock bug

Hi,
Can anyone confirm if they have the same issue. I have set up the lock with either code or finger print, but i have notice that i can sometimes get into the device without either.
Tap power button - slide screen up (to access code screen) - Hit Emergency - when emergency dial screen shows, hit the back button.
this has worked on my device a number of times, but i'm wondering if its a common fault, so something specific to settings i have.
newwave19 said:
Hi,
Can anyone confirm if they have the same issue. I have set up the lock with either code or finger print, but i have notice that i can sometimes get into the device without either.
Tap power button - slide screen up (to access code screen) - Hit Emergency - when emergency dial screen shows, hit the back button.
this has worked on my device a number of times, but i'm wondering if its a common fault, so something specific to settings i have.
Click to expand...
Click to collapse
possibly it's not a bug, i think your fingerprint was verified after pressing the power button.
you can wake the phone by double clicking the screen and don't touch the power button, if you can still unlock the phone without inputting code then it may be a bug
xda_shinyda said:
possibly it's not a bug, i think your fingerprint was verified after pressing the power button.
you can wake the phone by double clicking the screen and don't touch the power button, if you can still unlock the phone without inputting code then it may be a bug
Click to expand...
Click to collapse
thought that with the finger print myself, so i used a finger that wasn't linked to it. Double tapping the screen didn't work. Again, it was still happening intermitantly.
Phil
I don't think it's a bug as my z5 is connected to my Microsoft band 2 via Bluetooth and after I paired it with my phone I was given an option to add the Microsoft band 2 as authorised device or something.. I did not bother to read the rest and chose OK, so now when ever I am wearing my Microsoft band 2 my z5 do not ask for password or finger print. I also thought that when I power up my z5 with power button it unlocked automatically with my finger print so I woke my z5 with double tap on the screen and slide up the lock screen and it did not ask for any password...
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