yashsingh1/xdaforums huggingface dataset:
[G3 General] ryandigweed:
Could you please reupload the images for the screen flicker fix ??
[G3 General] ppajdek:
https://xdaforums.com/showpost.php?p=73287384&postcount=39
[G3 General] cap1tal1sm:
I started getting the no sim found issue after 3+ years. I took it to the Verizon store and they replaced the SIM card, and now I haven't had any issues with it since.

Oddly, the message did pop up once since replacing the SIM, but I restarted the phone and days later haven't had any issues.
[G3 General] ryandigweed:
I believe there was a picture of the motherboard as well. Not too sure.

---------- Post added at 03:10 AM ---------- Previous post was at 02:52 AM ----------

Do you have more pictures of the mod ? The ram chip, and what material you used ?

---------- Post added at 03:15 AM ---------- Previous post was at 03:10 AM ----------

Did the screen flicker come back ?
[G3 General] Zapkent:
I have my g3 2,5 years and i have sim issues for long time. For some reason my g3 read the sim only with Euphoria-OS; https://xdaforums.com/lg-g3/development/rom-euphoria-os-1-0-t3048515

Ιt has happened to someone to read the sim any version 7?

I would like the least a version 7, ι am desperate
[G3 General] KevMetal:
try viper or ground zero roms
[G3 General] Zapkent:
I tried all of these and none of them read the sim.

Only with the viper os I had little luck with the sim but in the next restart was lost. Sorry for my english:p
[G3 General] KevMetal:
for me viperos was fine ..open the phone

- take out sim

- take out sd

- take out the battery

-take out the board

-put in a preheated oven of 180 degrees celsius fir exactly 10 minutes

- put it back together

-flash viper

this worked 101% for me ...be carful not to bend the board or be careful to use the short screw next to the camera
[G3 General] xfim:
[MENTION=3744426]ryandigweed[/MENTION] no I dont have but I just improvised, that's all. In case that just putting pressure isnt enough, heat it up. I used a candle and some pliers and two flat pieces of metal that I put on SSD and RAM and pliers in the middle of both chips to put pressure. Then I heated it with a candle for a few minutes and that fixed it but without pressure to hold it like that it wont last long before you have to redo it.
[G3 General] Felix92x:
Someone suddenly has the image where it indicates the solution to the problem that the screen fades and turns black ...
[G3 General] ryandigweed:
Has the problem come back for you ? Just to confirm you had the screen flicker issue right ?
[G3 General] jayalaba:
Are you seriously OK? lucky u r not in US.

"Indian people that I figured best know how to repair mobile phone stuff (and also speak THE WORST english)"

"by the words of my illiterate Indian fellow"

Try to learn some tech stuffs from Indians and stop finding phones from garbage.
[G3 General] HuEx:
excuse me .. about screen flickering and fading .. i face this problem a week before .. i replaced the proccer of mine with another one from a faulty board .. it works fine with me for week and once it sudden death .. what do u think what happened ? is it about solder the proccer ?
[G3 General] xfim:
Yes and no. The last time I did it a few days ago, so far so good. I also put a 15x15mm thin, flat metal shim so that the ram stays connected and also for heat transfer. I hope it continues to work. It all comes down to how well you manage to execute the process.
[G3 General] hahmad78:
CAN SOME ONE PLEASE UPLOAD PICS AGAIN?

i am having sim card issue
[G3 General] jlb1959.01:
This a shop in cal that actually sells pre cut tape that does the same thing,didn't work for me tho.it's suppose to be a heat transfer ..

Never tried anything else besides a cut up credit card as a shin which is a temp fix for a week at most..I'll have to look up the exact name of the product,maybe it will work for someone else,Cellular doc.com..
[G3 General] hahmad78:
plz re upload the pics for sim problem issue
[G3 General] ahmedyaser7:
I cooked my D855 in the oven 2 hours ago due to BSOD, just to see this post now, lol. But to my surprise it really worked, I don't know for how much! but it looks fine and everything is working. I was despaired and wanted to try anything. 10 minutes in an oven preheated to 180 celsius, wrapped in aluminum paper.
[G3 General] MrCabana:
I'd like to add my experience to this thread. A friend of mine gave me a faulty D855 with WIFI and NO SIM issues, so I tried to find a fix on youtube. Here are my results:

1) The paper trick applied next to the camera worked for a few days, but then it started again.

2) The aluminium foil with thermal paste worked great for two days in a row, then I stupidly decided to test my luck and threw it on my couch 4 or 5 times (to test impact) and all sort of things started to happen (BSOD, bootloop, etc).

3) Tried the heat gun solution applied to the processor. F*** knows how hot it was because the gun I have doesn't show temperature, just a slider from MIN to MAX. Anyway, I adjusted the temperature about the middle and applied to the board for about 20 seconds. The phone went totally dead after that, the only sign of life is when I plug the charger and I feel the processor getting really hot.

Then it got me really intrigued and I decided to buy an used phone, same model, allegedly with a "flickering screen", only to find out it's also a MOBO problem. This second board works fine with the aluminium foil + thermal paste trick if I don't use it too much. The temperature is always from 60 to 80 C, anything beyond that will flicker the screen and I have to wait it cools down.

Since it's kinda working, I am not willing to try a permanent fix for now. I am not a heavy user or a gamer, so I will keep it as it is for now.

My first board, on the other hand, the one that's dead, I will try and bake it to see what happens. Will post results later.

ADVICE TO THOSE HAVING THE BOOTLOOP ISSUE:

it may be a battery problem. If your phone shows the logo and reboots after a few seconds, the problem may reside in a small capacitor beneath the battery connectors. In this case you should look for the "LG G3 battery fix" online.
[G3 General] jlb1959.01:
thank you.
[G3 General] KevMetal:
I've told you guys many times from personal experience......:p
[G3 General] MrCabana:
Reporting back: I just tried this method of yours.

Symptoms: phone dead after applying heat gun to the entire MOBO, don't know for sure, but about 200C. Only sign of life is when I plug the battery and it will get the chip PM8841 (seen in Pic 1) really really hot in half a second.

Method: baking the board into the oven pre-heated with 205C for about 10 minutes.

Result: nothing changed, same symptoms described above.

So I went further and tried the Panic Method, which is spreading flux all over the board and applying something hotter than 200C for 1 minute with my heat gun. After that I brushed all the flux remains with isopropanol.

Now it's 100% dead, not even the battery with its 4.06 volts will make the chip hot again.

If you guys have another suggestion for me, please post.
[G3 General] KevMetal:
my method is

10 minutes [MENTION=742690]180[/MENTION] degrees celsius

THE REST HAS NOTHING TO DO WITH ME and most likely killed your board dead bro
[G3 General] MrCabana:
No offense mate, when I said "your" method, I meant the general "bake in the oven" method.

I didn't do it exactly as you did since I apparently applied a little more heat than you, also I used a little device to add some pressure to the processor and the memory card on the other side.

It doesn't really matter because the board was already dead anyway.

That would be no surprise if it's gone for good. In fact this whole process makes me feel like playing God operating the miracle of ressurection.

One thing is for sure, since this damn piece of s*** isn't responding no matter what, I can try every method just for fun (and for practice). I might even try the lighter tonight, which gives 400C and see if gives me the "life is good" thingy back again.
[G3 General] Felix92x:
gentlemen I have some experience in the arrangement of cell phones and so I have investigated the models of LG G3 - Beat, LG G4 - Beat, LG V10 and LG Nexus 5x came out with a defect in the SoC (System on Chip) and some works Well the method of reheating all the SoC but for many it does not work since the main problem lies in the RAM of the SoC and for people who say that after the SoC reheating their equipment died and only shows heating with the charger connected it should be to which the processor applied a lot of heat and the only solution would be to replace the processor but it is a process that only they do in China

---------- Post added at 08:06 PM ---------- Previous post was at 08:00 PM ----------

the most recommended if you want to get important information from a team in bootloop, BSOD or failing dead is to reflow the SoC but at a maximum of 320 degrees Celsius with an air power of 3 or a half for 1 minute but be very careful not apply pressure to the SoC since you can break the ram or desolder from one of its side EYE that arrangement is temporary and lasts maximum 2 to 5 days, if they want a permanent fix the only method would be to do a full Reballing to RAM without affect the processor
[G3 General] Reaper1015:
images are down

hi does anyone have the image for the "4. Sim card removed and restart/No sim card/invalid card -" problem?
[G3 General] giokspy:
Hello. My g3 start for 5-15 sec and close without rebooting. After this start again for shorter time and then for start need to put out the battery . Same thing for charging. The solution is heating up the chip like BSOD?
[G3 General] pistacios:
This^^^

Anyone?
[G3 General] omidkh007:
:

What is mo-fo chip?

Where is it?

image link is not working
[G3 General] Shahariarrabby:
Image Link Not working

2. screen flicker -

4. Sim card removed and restart/No sim card/invalid card -
[G3 General] Munirafzal:
Sir ihave lg g3 his back camera is not working when i open camera only his front camera open and have not option to main camera and flash also flash is not working pls kindly solve my problem plse plse
[G3 General] ohaai:
d850 reboot constantly

I have my d850 for a long time. in the past it did this thing where it would reboot constantly until I plugged it in. A new battery solved that issue. Now, 8 months later, it happens again, only difference is that plugging it in doesnt help. Ive tried two new batteries this time, first one didnt work and i figured it was faulty so i returned it and got another, which still doesnt fix the issue. I turned on the phone without my sim and sd card which made no difference either.

I just unrooted my phone and reset to stock, which still doesnt fix the issue either. should i bother with a third new battery to test this? this phone works so smoothly, still fast, still a GREAT phone...I just cant pin point the issue thats causing the reboots as ive tried all i can think of. Id hate to have to toss it. any other suggestions?

thanks in advance!
[G3 General] Cycloptic:
No sound, OS freezes.

Hi all,

I recently bought a used unlocked Lg G3 D851 for T-mobile. As soon as i booted it up, everything was working fine out of the package.

Started up the Camera App. Used the Camera, worked! Then i switched over to Video Mode and started capturing. After that, played the video and noticed there was no sound coming from the speaker. So, the app closed and gave me notification "Waiting for app to close" and it was crashing and doing all kinds of buggy things like going back to the lock screen..etc etc Even at the boot startup there is supposed to be sound. Even does the same thing i try to make a call. The button is pressed, then won't respond to dial. Other than the glitch, the OS runs flawlessly! but as soon i try to enable sound. The unit crashes over and over. Then have to do a system reset. All is running fine again; only if i avoid adjusting with the sound button in settings.

I'm thinking for sure its a hardware problem. Don't really know what to look for in this particular situation. I already took apart the phone

and looked for what the fault could be, If its water damaged, how do you tell?
[G3 General] mountaser halak:
works for now thanks !!
[G3 General] Necromancer3:
I had an LG G3 D850 that had screen flicker / fade problem.

I tried many different things posted on the internet, like pressing different ribbons with paper or whatever, pressing chips, cpu etc..

Some helped for a day, pressing the cpu/ram seemed to help for about a month, but then the flicker and fade returned and that "solution" didn't work anymore.

I checked the claims that its due to overheating, however my cpu was at 54C when it flicker and faded, and i have another LG G3 D855 which cpu can go as high as 85C without problem, so i crossed that out.

After reading the first post saying heat and scrub the 4x5 pins above the gyro due to magnatic residue, i took a screwdriver with magnetic head, and moved it close to those pins, nothing happened.

flicker didn't get better or worse. i tried to poke different parts of the board with same results.

I pressed the phone against a strong magnet, the screen changed to show an analog watch, and would alternate between watch and normal every few seconds. No effect on flickering though.

So i concluded these pins, or any magnetic influence has nothing to do with screen flicker either.

I guessed the only "popular" option left is loose connections somewhere on the board. Mobo connection and not ribbons that were all checked many times.

Since i didn't know which chip to heat up, i figured i'll just cook all of them in the oven method.

I heated up the oven for 140C and had it there inside aluminum foil for 10 min. When i took it out it was too hot to touch, and it was smelling a bit like new electronics (or burned plastic i donno).

Let it cool for a few min, put it back it, and it booted.

So far didn't have screen flicker / screen fade on that phone, but 2 days is too early to tell if its been permanently fixed or just lucky few days.

I will probably fail to update, so if it concerns someone give me a notification.
[G3 General] profeduards:
links from the first post said: 404 Not Found
[G3 General] fubag:
how about SD card slot not detecting any SD cards?
[G3 General] ride_bmx_mhell:
do you have a solution in invalid battery?
[G3 General] RIcardolg:
Help

Hi, I have the same problem, and the problem came up again? I'm tempted to do this method. Excuse my English, I'm from BRAZIL.
[G3 General] jlb1959.01:
I've done this over a year ago,and still have issues,not as frequent but still same issues..
[G3 General] Necromancer3:
Screen flickering came back 2 days after baking at ~130C.

I have another D855 phone that died on me suddenly sometime last year (had a red screen with some failure, never booted again, i guess something detached on the Mobo too).

I took the Mobo out of the flickering D850 and put it instead of the dead D855, phone booted but screen flicker is there. So that concludes its indeed not a problem with the screen but a problem on the main board.

I am really out of options. I guess the next thing to try is heating the processor/Ram chip to different temperatures (180C, 280C) to see if it fixes or kills the phone.

Unfortunately i do not own a proper heat gun with temperature levels so i can't try it anytime soon.
[G3 General] jlb1959.01:
Best of luck,I've come to conclusion its the board,don't see a solution,just keeping the phone to minimum heat,I have an 850,985, ones rooted,ones not,both within 1 year have the same issue,both just after the 1 year coverage ends,I've used the paste,the short term creditdard,done it all...
[G3 General] PERSIA_MISI:
hello

i have a problem with lg g3 d855 32gig

i see this error and reboot my device several time: the mobile network will be unavailable until you start with a valid sim card inserted

i have not any network

some times this problem solved but usually problem continues

i flashed my phone via stock rom and official rom with lgup and all version of flash tools all version of android and kdz file and tot file

i did reset factory

change sim card

i checked slot sim but i could not find any problem!

please help me i got tired.

For my weak English, forgive me
[G3 General] PERSIA_MISI:
please help meeeeeeeee :rolleyes:
[G3 General] iMuse13:
Problem with multimedia.

Hello everyone, I present a problem with an LG G3 D851 T-Mobile, the device works correctly. But the moment comes when the audio goes away, the camera does not work to record and does not play the Youtube videos. I've been looking in many forums and apparently no one has come up with a concrete answer. I await your prompt help.

PS: Making a factory reset, everything works again (about 1 or 2 days perfectly)

PD2: Sometimes with the change of battery is fixed, but after a while returns with the same fault.

PD3: Sorry for my bad English, I'm from Venezuela.
[G3 General] gfacer:
So I tried the heat gun method (luckily we have at work). I could not set it to 180c but I had a reducer nozzle that helped direct the heat to the edges and a laser thermometer that helped. I did each side (SOC for about a minute and Ram for maybe 30 sec). I did not go over the chip so much as around the chip.

Temp on board was reading about 120 just after heat was removed. And that was on the chip, the solder points should have been a bit higher.

I let it cool for about 20 min until board was at ambient temp. Reassembled and booted up fine as before (I only had flicker and fade issue) and so far so good (its only been hours though).

If it happens again I will probably get a new phone but since I just bought my kids some old G3's its worth seeing how it plays out. Still might thermal paste the lot of them to try and reduce the heat build up in the future. Of note I had been using the phone a lot for navigation a week before this happened and that did get the phone hotter than usual.

Time will tell but its worth a shot if you have the right equipment.
[G3 General] IneedAbetterUsername:
Fixed screen flickering using your method,thanks man!

I used a heat gun,piece of wire and some aluminium foil.first i covered everything but the 5x4 grid above gyro sensor in aluminium foil,heat gun was set to 300c and was set/used about 10-15 cm away from motherboard,room temperature is 24c,wire is seen in the pic,with wire i scrubbed/wiped/cleaned the grid about 2-4 minutes same time as i heated it with heat gun which was about 10-15 cm away from motherboard,once done i let it cool down-put it back in the phone,no thermal paste,cpu went 74c when played a game,so far no flickering

Sorry for my bad english
[G3 General] saldor:
Has somebody the picture of the chip one has to replace if the SIM card reader fails?
[G3 General] saldor:
Have you tried this method:

https://xdaforums.com/showpost.php?p=73996869&postcount=62
[G3 General] gfacer:
And still no sign of a return over 2 days. Optimistic enough to buy an extended battery.
[G3 General] IneedAbetterUsername:
update:the flickering and fading black came back after 2 days,now it seems to be more agressive(goes really fast black screen)
[G3 General] IneedAbetterUsername:
More updates:the issue is now gone,seems like the motherboard is slowly deading (bad english haha)
[G3 General] IneedAbetterUsername:
More updates:since the issue got stronger etc i did the same process again with higher heat setting and hold the gun closer.and i heated the soc/cpu too while i pressed and holded with screwdriver.issue seems to be gone for now
[G3 General] fogimup:
Well I'll be damned. I didn't want to believe you, but your trick frigging worked.

After the phone suddenly died, I replaced the screen, battery and tried everything under the sun, I was about to toss it in the bin, but not anymore. I'm glad I stumbled upon your post. big thanks.
[G3 General] gfacer:
And now all good over a week (and now using new big battery).
[G3 General] imranrony:
Any solution for camera problem?
[G3 General] gfacer:
And shoot. It returned. So that lasted 10days? Might try again but this sucks. Oh well - not on a contract at least.
[G3 General] gfacer:
Ok redid the reflow, again. Works again. I think the culprit was dropping it fairly hard yesterday.

So this repair is at best temporary imho at least with an amateurs skill set.

I've ordered a xiaomi mi A1 and this phone will move to back up status (or parts for the kids phones).

Still a useful approach if you need to pull your data off.

Took like 60 attempts to get enough on screen on time last night to 1)enable a data hotspot and 2)send 1 text. Been typing this for a few minutes and no issues so far.

Thanks to the internet and this forum for figuring out these things.
[G3 General] Necromancer3:
Update: my 3rd and last LG G3 turned blue screen (LG logo on boot -> full blue screen).

Got myself a chines slave factory heat gun, turned it on 190C and burned the SOC and memory chips for about 10 seconds, then pressed them down with group of 3 toothpicks (taped together).

results:

phone 1 (blue screen): seems to be fixed.

phone 2 (screen flicker/fade) : seems to be fixed

phone 3 (green screen w/ demigod error and death) : no change, completely dead. i then tried to burn all the chips that had same type of solder glue, still no boot. will try to bake in oven at 180C. EDIT: still dead after baking [MENTION=742690]180[/MENTION]C.

This was done about 5 hours ago, not enough to evidence for it to hold for a while, as last time i baked the flickering board at 130C it worked for two days then it came back, we'll see how long this lasts.
[G3 General] Necromancer3:
update: flicker came back bad again, heated the SoC chip at 220C this time, pressed down with a chopstick until it cooled down.
[G3 General] jlb1959.01:
dam,,well thanks,and nice try..I've run out of ideas,and its too bad because the lg3 was a great phone,in fact I still have this one(vs985) going on 2 years,,knock on wood.believe me I've tried everything,changing boards,heat conductor strips,nothing actually stops the issue...

thanks again..
[G3 General] gfacer:
Yep, mine stopped working again after 2 days. Luckily my new phone xiaomi mi A1 came before that (liking it so far though some possible issues with they touch screen too early to be sure)
[G3 General] Necromancer3:
Update:

I burned my flickering phone SoC at 350C, put it back in, saw a bit of flickering at the sides of the screen, burned it at 380C and heard a "puff" of some transistor or something blowing up, stopped, but the phone never booted.

for reference i've blown over the chip from a distance of about 1 cm, for 40 seconds (when the temp was set 350), and no damage was done as far as i can tell, but 380C is not safe.