iFixit - Answers With Device "LG G3"

LG G3: LG G3 would rarely turn on or when it does it gives me a blue screen

Sat, 07 Feb 2026 06:07:49 -0700

Hello.

I’ve been experiencing an issue with my LG G3 D850.Before my LG G3 was fine.One day i left it on charging all night as usual.The next day i open it and get a blue screen.The blue screen issue has been going for a while.I didn’t use the phone for a while.Now i can’t even turn it on!!I’ve tried a few fixes and it turned on to a blue screen..Now i still can’t turn it on again.

Any Fix without returning it for fixing or anything.

Sincerely,Me.

Please Fix this Issue :C

⟐ Answered February 07, 2026 at 6:07 MST

LG G3: It can not turned on but show signs of charging when plugged

Tue, 23 Dec 2025 03:07:32 -0700

can not turned on but show signs of charging when plugged

LG G3: Phone gets stuck on LG logo start up screen and flashes repeatedly?

Fri, 29 Aug 2025 18:18:55 -0700

My LG G3 switched off by itself and the battery was at 50%. It now will not switch on. The LG logo start up screen comes on for a second then it goes black and does this repeatedly. The same thing happens when i charge it. The charging icon appears and then flashes on and off. I am not concerned about the phone. What I do want to know it how can I retrieve my photos?

⟐ Commented August 29, 2025 at 18:18 MST

LG G3: LG G3 Blue Screen

Mon, 28 Oct 2024 09:53:42 -0700

The Lg G3 will flash the logo sign and then after a second the screen flashes blue. Is it a software or hardware issue

⟐ Answered October 28, 2024 at 9:53 MST

LG G3: I can't find the correct scatter file for my LG G3 Stylus

Sat, 31 Aug 2024 20:47:28 -0700

Hey guys, i need a little help, so i was messing with custom roms, and i probably corrupted the bootloader but my PC still detects my Phone as "Mediatek USB Port", so maybe there is still a chance but that port disconnects every 2 seconds, like when i connect my phone i see it in device manager and it disconnects again, i've tried all of my USB Cable, and btw the phone is all black screen, can anyone help me? and i don't have a scatter file for it even if i get the drivers to work, help me.

⟐ Edited August 31, 2024 at 20:47 MST

LG G3: Why my g3 has high temp?

Sat, 20 Jul 2024 13:33:23 -0700

My g3 when on 30% load temp is 60-50 its normal?

⟐ Answered July 20, 2024 at 13:33 MST

LG G3: shutdown and not power on problem mainboard

Fri, 29 Sep 2023 06:11:33 -0700

not power .problem mainnboard , no sharj and no start and no screen never on mobile

⟐ Answer accepted September 29, 2023 at 6:11 MST

LG G3: screen flickering and turns black at high temperature

Sat, 09 Sep 2023 12:50:27 -0700

Hello as my title states my lg g3 is broken. When i start using my phone for about a minute and the screen starts flickering and then goes black screen. Its weird because my phone keeps running until i turn it off. What could it be hardware or firmware or screen>

⟐ Commented September 09, 2023 at 12:50 MST

LG G3: demigod crash handler kernel crash..

Tue, 25 Oct 2022 04:26:16 -0700

My lg g3 phone goes to a blue screen.. Then turns off. It will then come up with a green screen and a kernal crash.. It gives instructions to reboot.. But that doesn't work! Did a hard reboot which worked for a few hours then it happens again!! My Sprint carrier said "too bad" cause I don't have insurance.. Help!! I don't want to spend the $350 they said it will cost me... I think the software update my phone last had was corrupt! Or did not finish properly!! I am at a loss.. Now it says this error..

⟐ Answer accepted October 25, 2022 at 4:26 MST

LG G3: My phone is restarting when using camera

Fri, 10 Jun 2022 01:09:07 -0700

I am using lg g3. When i use camera frequently it restrart or or being off. And not going to switch on with power button until i replace battery. What is the problem. What will i do now. Thanks

⟐ Commented June 10, 2022 at 1:09 MST

LG G3: MY LG D851 is stuck at blue screen

Fri, 04 Feb 2022 00:38:47 -0700

I have a LG D 851 and I tried to upgrade my android version and I got a blue screen with the message; Factory reset status 2

⟐ Commented February 04, 2022 at 0:38 MST

LG G3: Screen dim (after "baking" CPU)

Sun, 11 Jul 2021 04:16:14 -0700

Hello everyone,

first, some context: I’ve got LineageOS installed on my phone and a few days ago, it just started bootlooping: it displayed the LG logo for a long time, then it showed the Lineage boot animation for a bit and then restarted. I installed a backup, then I completely reinstalled Lineage, but it still didn’t work. I then found out that it’s probably because of a bad battery or due to the CPU’s solder points becoming bad due to the CPU getting hot. The battery is only about a year old, so I tried “baking” the CPU (I’ve had the thermal pad mod on the cpu for quite some time but maybe that’s not eneough to prevent this problem). By that I mean I took a hot air gun and pointed it at the CPU and the storage chip. After that, the phone booted up again, but the screen was very dim. After a day, it went bootlooping again, so I used the hot air gun again, but this time more thoroughly. It has now been working for two days (which doesn’t mean that the CPU won’t come loose again, apparently baking is only a temporary fix) but the screen was still just as dim.

When I say dim, I mean the screen still emits some light, so the backlight is still working, I guess. It’s just not nearly enough. I noticed it on the first boot up: even the LG logo was dark. I can use the phone indoors, but outdoors when it is sunny it is unusable. Moving the brightness slider still changes the brightness, so that is still working, the screen is just overall way too dark. I didn’t enable any energy saver mode. When I wake the phone up, it is sometimes a bit brighter than other times (still not as bright as it should be, though). Auto-brightness is turned off.

Due to the symptoms I’m thinking that it is a hardware problem.

If the backlight filter, the diode (or the coil for that matter ;) ) died, would that kill the backlight entirely, or could it cause a dim backlight like I have? I don’t think I disconnected/connected the display cable while the battery was still plugged in, but I’m not sure.

Could it be that the whole problem is related to the CPU still not having proper contact with the pads?

Could I have damaged the part that creates the voltage/power for the backlight circuit, thus reducing the power for the backlight?

The whole board looks clean, I didn’t spot any water damage. The pins of the screen connector are also intact.

I was thinking about meassuring continuity on the backlight filter or maybe meassuring the voltage that comes into the backlight circuit, but I couldn’t find schematics with this info.

Thanks!

—Update 10.07.2021 —

I replaced the screen with a known good one. The backlight was still very dim. So there’s almost definitely a problem with my motherboard.

⟐ Commented July 11, 2021 at 4:16 MST

LG G3: Won't power on not recognized by pc

Mon, 24 May 2021 13:18:40 -0700

I have an LG g3 I had someone bring me to try to pull data off of. Normally I'd just say it's dead and you're sol. I tried booting with battery in, and plugged into wall power, no go. No charger light shows, plugged into pc and it's not recognized. I haven't tried a new battery yet but I did try booting without battery and no go. I seems YouTube video that said it's the power button and common on these g3 and G4 I had a G4 myself personally this same thing happened to. I would not mess with it at all but the data is of a girl that was 7 that died. I'm trying to pull the data with my heart going out to the owner that this is where a lot of pictures of her are from before she passed away. I wanted to at least try everything in my power to get the data recovered. I seen a YouTube video but the dudes head is in the way of how he pressed the connectors on the Mobo to get it to boot. I also seen someone say something about putting it in the freezer to get it to boot. Haven't tried that yet. Has anyone run into this and is it usually the battery, power button, or what is common to try to see if I can at least get it to boot once to get the data. I assume there's no other way to pull data off of it if it isn't recognized via USB. I have plenty of forensic investigator tools but if I can't get it to power up or be recognized via USB I figure their a crap shoot. Could it be the usb port went bad? Looking for suggestions and recommendations to try to help this lady out. I planned to charge for the recovery if I fixed it or got them but hearing this story I don't have the heart to do that.

⟐ Commented May 24, 2021 at 13:18 MST

LG G3: Sim Card Slot Contacts Broken, can you fix it?

Sat, 19 Dec 2020 17:08:17 -0700

What's the cost and time frame to replace a SIM Card Holder on a LG G3.

⟐ Commented December 19, 2020 at 17:08 MST

LG G3: Wifi and Bluetooth not working [LG G3 D855]

Fri, 04 Dec 2020 15:42:45 -0700

Both wifi and bluetooth have stopped responding. I cannot even turn it on. Phone is in good shape and just replaced the display. Problem began before lcd replacement but then it was just a weak signal or sometimes it break the connection. Any ideas?

⟐ Commented December 04, 2020 at 15:42 MST

LG G3: Screen randomly going to sleep Android

Sat, 02 May 2020 14:30:01 -0700

Hello, I have recently been experiencing my screen randomly turning off. It doesn't shut off, I just press the power button twice to wake it up, but this is extremely annoying. Especially when I'm watching Twitch or YouTube, it'll just randomly go to sleep. I have tried booting it in safe mode, and the issue isn't there. I. Also found out that the app Reddit was affecting it, so I deleted it. AND THE ISSUE STILL PERSISTS! This is extremely annoying and I would really like the assistance of a professional. Thank you very much. Please respond to this as soon as possible.

Solutions I tried:

-safe mode

-battery off for 10 seconds

-rice…?

-hard factory reset

I'd really like to be able to use this phone as it is my only way of communication at the moment and I cannot pay for a new battery, screen, etc. I hope this gets responded to soon.

LG G3: My phone has multi colored lines on half the screen, how do I fix it?

Fri, 24 Apr 2020 12:18:42 -0700

I dropped my phone and when i picked it up, it had multi colored lines on the right side of the screen only. The touch screen still works fine, its just those lines that don't go away and i cant see the rest of my phone.

⟐ Answered April 24, 2020 at 12:18 MST

LG G3: My lg g3 would not turn on

Tue, 14 Apr 2020 13:20:14 -0700

my lg g3 would not turn on. i tried restart, remove battery and plug in without battery

LG G3: My SD card slot keeps ejecting the memory card

Mon, 02 Mar 2020 02:26:57 -0700

Depending on how I hold my phone, my external SD card keeps "unmounting" and will stop being read by my phone. How do I fix this issue? Can it be fixed?

⟐ Commented March 02, 2020 at 2:26 MST

LG G3: Mobile not switching ON

Thu, 20 Feb 2020 10:44:18 -0700

Mobile switched off not charging. Showing battery charging symbol on display.