LG G2 black screen - G2 Q&A, Help & Troubleshooting

I have an LG G2 in stock lollipop. In the recent days i noticed that the screen flickers at low brightness and if the brightness is below 20% the screen goes completely black (cant see anything sort of black). Is there anyway i could fix it ? Is it a software or hardware issue? Please help

paul369741 said:
I have an LG G2 in stock lollipop. In the recent days i noticed that the screen flickers at low brightness and if the brightness is below 20% the screen goes completely black (cant see anything sort of black). Is there anyway i could fix it ? Is it a software or hardware issue? Please help
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Click to collapse
i think its a hardware problem .and no doble posting..

Related

Screen flickering

hi!
I recently bought a xperia and noticed that the screen is flickering when you turn off the automatic adjustment and turn the screen to maximum. Is this normal or should i return it? its very innoying. It's the light in the bottom of the screen that flickers.
I would return it. Mine does not do this, so I wouldnt consider this "normal"
seems that you have a defective retroillumination led... return it
yeah, definately not normal - mine doesn't have this issue
I also recently received my X1. I also note that the light of my screen flickers but only with certain software. It vibrates on the left when loading windows, and on the black bar in touchflo3d between the start menu and the clock ... I can't see if it is a hardware problem and therefore if I should get the guarantee

Auto-brightness problem, anyone experience it ?

Hi,
I have an auto-brightness issue, when I turn the auto mod on the screen turn all black. I can still heard clicking sounds and when I put the N7 under a strong light ( white leds ) it turn on. So it is definitely a brightness problem. I just fix the level on 25% and everything go right, until I start the YouTube app who magically change the brightness and in the first 5sec of the video the screen turn black again I have to fix the value at 50% for avoiding that.
Anyone experience this issue ?
Any fixe ?
Do you think it's an ardware or software problem?
Thanks

Brightness issue

Hi!
Yesterday I've got a secondhand LG G2 (D805) and noticed that the brightness doesn't change if I move the slider above 40%. The screen brightness flickers sometimes too, as if a more annoying adaptive brightness thing.
I've already tried to go all the way back to jelly bean stock rom, but still no deal.
Someone know what is goin on with this phone? There is nothing looking bad on the insides. All the flats are well-connected and looking new.

Nightclick & LCD vs AMOLED

Last night, I went to use my night clock app with my new LG v20. On my Note 7, the screen was totally 100% black except for the numbers.
On the v20, the entire screen was stil lit - faint, but clearly still lit up in a light light grey.
Is this just how an LCD screen works, or is there something I have to do in order to get the rest of the screen to go off.
(Note, this includes the 2nd screen which was also lit - and I had the brightness at 0%).
--
BTW, this may need to be a separate thread - on my phone I notice that the auto-brightness tends to be too dark. Any way I can adjust it to be brighter when in auto mode, or should I just go to manual ?
polstein said:
Last night, I went to use my night clock app with my new LG v20. On my Note 7, the screen was totally 100% black except for the numbers.
On the v20, the entire screen was stil lit - faint, but clearly still lit up in a light light grey.
Is this just how an LCD screen works, or is there something I have to do in order to get the rest of the screen to go off.
(Note, this includes the 2nd screen which was also lit - and I had the brightness at 0%).
--
BTW, this may need to be a separate thread - on my phone I notice that the auto-brightness tends to be too dark. Any way I can adjust it to be brighter when in auto mode, or should I just go to manual ?
Click to expand...
Click to collapse
Try turning off second screen and see what your results are.. Second screen has a seperate black light that slightly bleeds out to the rest of the screen. It was horrible on the V10 but much improved on the 20..
Swizzle82 said:
Try turning off second screen and see what your results are.. Second screen has a separate black light that slightly bleeds out to the rest of the screen. It was horrible on the V10 but much improved on the 20..
Click to expand...
Click to collapse
The night clock app has the option to turn off the notification, which also turns off the 2nd screen.
...oops. It did, until I followed your suggestion in the other thread about the more setting to enable time/date when in full screen or notification bar hidden. I'll have to get into the habit of turning *off* the more setting at night.
(Either way, doesn't help with the slight gray background color. I can probably just get used to it as long as I'm not damaging the screen by having it slightly on all night. I need to google if LCD screens have burn in problems I guess.)
--
Maybe I should just start pm'ing you all my questions
polstein said:
Last night, I went to use my night clock app with my new LG v20. On my Note 7, the screen was totally 100% black except for the numbers.
On the v20, the entire screen was stil lit - faint, but clearly still lit up in a light light grey.
Is this just how an LCD screen works, or is there something I have to do in order to get the rest of the screen to go off.
(Note, this includes the 2nd screen which was also lit - and I had the brightness at 0%).
--
BTW, this may need to be a separate thread - on my phone I notice that the auto-brightness tends to be too dark. Any way I can adjust it to be brighter when in auto mode, or should I just go to manual ?
Click to expand...
Click to collapse
I use this on all my phones since I feel stock auto is too dim. https://play.google.com/store/apps/details?id=com.velis.auto.brightness
polstein said:
The night clock app has the option to turn off the notification, which also turns off the 2nd screen.
...oops. It did, until I followed your suggestion in the other thread about the more setting to enable time/date when in full screen or notification bar hidden. I'll have to get into the habit of turning *off* the more setting at night.
(Either way, doesn't help with the slight gray background color. I can probably just get used to it as long as I'm not damaging the screen by having it slightly on all night. I need to google if LCD screens have burn in problems I guess.)
--
Maybe I should just start pm'ing you all my questions
Click to expand...
Click to collapse
Sent from my LG-H830 using Tapatalk
Use comfort view on low or medium. Will help lower the ~9000K color temp some and help blacks a hair. Faint glow is typical on LCDs. Higher quality LCDs and higher quality led's can help. Lg skimped here. Sucks they didn't even give us color modes to pick from. The colors are waaay off. But using comfort view dims the blue pixels and helps considerably.
polstein said:
On the v20, the entire screen was stil lit - faint, but clearly still lit up in a light light grey.
Is this just how an LCD screen works, or is there something I have to do in order to get the rest of the screen to go off.
Click to expand...
Click to collapse
That's just how LCD works, they need CCFL or LED back light to lit up the screen, it's not possible for it to be completely black while turned on. With AMOLED the individual pixels can turn off itself which is why the black are blacker on them. OLED screens also have very high refresh rates which eliminates flickering, this is good for people who are concerned with eyes health.
Lcd doesn't get burn in, but it can get ghost image retention. It was f***ing horrible by the end of my V10 usage.. Never had the problem on the G2 3 or 4. Just the V10, even after factory resetting.
Swizzle82 said:
Lcd doesn't get burn in, but it can get ghost image retention. It was f***ing horrible by the end of my V10 usage.. Never had the problem on the G2 3 or 4. Just the V10, even after factory resetting.
Click to expand...
Click to collapse
Had the same issue my V10, that is my biggest V20 concern. . My v10 was not even a year old.
I get the engineering and cost reasoning, but not sure I like the lcd screens.

Samsung S5 901F - Green flickering screen

Hello
My S5 randomly began flickering with a green screen to the point where I was unable to use my screen. It seems to happen a lot especially when I have the "Auto Brightness" feature on and when it's in a low light environment
I didn't drop the phone , and i tried many solutions , wipe data partition , change the ROM ( to official )
but no solution solve it
PS: I can't make a link from youtube explain my problem by video , but you can search on youtube " Samsung S5 Green flickering screen " to know what exactly the problem is !
cause of this error
"To prevent spam on the XDA forums, ALL new users prevented from posting outside links in their messages. After approximately 10 posts, you will be able to post outside links. Thank you for understanding!"
Hi!
does your phone sometimes not light the screen when unlock?
Reyse said:
Hi!
does your phone sometimes not light the screen when unlock?
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Click to collapse
yes that's happened often and the phone unlock without any problem, but sometimes the green flickering won't let me unlock the phone
This is a common problem with AMOLED displays. At a certain point when auto brightness or you manually turn the brightness down, the low power involved makes the screen flicker. Try turning off auto brightness and adjusting the sloder until it stops flickering, then you can use apps like Pixel Filter and/or the xposed module Screen Filter to further darken the screen to save battery.
GorfDroid said:
This is a common problem with AMOLED displays. At a certain point when auto brightness or you manually turn the brightness down, the low power involved makes the screen flicker. Try turning off auto brightness and adjusting the sloder until it stops flickering, then you can use apps like Pixel Filter and/or the xposed module Screen Filter to further darken the screen to save battery.
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Click to collapse
is that mean , there is no way to fix it, else than turning off auto brightness ?
awby said:
is that mean , there is no way to fix it, else than turning off auto brightness ?
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Click to collapse
Not that I'm aware of.
awby said:
is that mean , there is no way to fix it, else than turning off auto brightness ?
Click to expand...
Click to collapse
This is a hardware failure. The fix is change screen which can cost as much as a new phone. There are several youtube videos showing that applying hot guns can fix the problem

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