yashsingh1/xdaforums huggingface dataset:
[G3 Q&A, Help & Troubleshooting] Shultzy:
Just adding my experience to the thread.

1. The left channel hissing noise seems associated with the combination of several things: Headphones plugged in, USB charger plugged in, not playing any sound, and in an app other than the stock home/launcher. For some reason if I stop/pause the audio the hissing will start after about 3 seconds consistently but if I return to the stock home/launcher the hissing stops. When I use Action Launcher instead of the stock it doesn't stop. Hopefully that means it can be fixed with software.

2. I get a weird electric noise from the right channel when I do certain actions, particularly near the bottom of the screen. For example, if I pull the notifications down it gets louder as I get to the bottom of the screen. It also does it if I open the launcher menu, open a folder, or if I am scrolling. This is stranger to me and worries me more that it isn't a software issue.

Switching to ART didn't help either of these and some applications/widgets stopped working so I switched back. I emailed the reseller I bought the phone through and he replied that he thought they received technical bulletin on this issue. Unfortunately he hasn't gotten back to me on whether or not that was accurate or what it said.
[G3 Q&A, Help & Troubleshooting] grodronos:
I have made call without headphone. It didn't help.
[G3 Q&A, Help & Troubleshooting] crazililazn:
Adding my experience to this thread, the LG G3 has a lot of noise coming out of my headphones when plugged into the charger. However, it is only while the phone is not playing audio. The moment I pull out the charger, the noise disappears. This post seems to very interesting, because it would explain a lot of the issues that you guys are having with the phone making noise/hissing when switching tracks on AUX.

http://forums.androidcentral.com/ask-question/410902-lg-g3-sound-quality-problem.html#post3786775

It would also explain why I experience a ton of noise when having headphones plugged in and the charger plugged in. I have not had the chance to see how the G3 performs with AUX cables, but will update when I have the chance.
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
No matter what I do, I can't seem to get the light hiss to go away. Depending on what charger/headphone/app combo I use, I can somewhat affect it, or prevent the 'machine' noise, (sounds like random-access, electronic scratching,) but it's never perfectly silent like it should be. This is less noticeable when you're always listening to something, but if you pause you can hear the hissing. Annoying.
[G3 Q&A, Help & Troubleshooting] Dinger558:
This may actually be a hardware problem.

What most of us suffer from is just some software glitch that has several temporary fixes that causes intermittent hissing on the left channel. I only notice it while listening to audiobooks.
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
If I have my headphones connected directly to the phone with no charger, I have no problems while the audio codec is enabled. IE, no hiss, no nothing. Though you can hear the chip click off when there is no playback. I can hear the thump, and once it's off I can also hear what sounds identically like a GSM cell phone terrorizing a PA system. This is definitely some sort of grounding issue.

When I plug in the charger, my god. This amplifies the problem 100-fold. Screeching, hissing, buzzing. The only way to minimize that is to plug the headphones into my PC first, then use an AUX cable to route that to the line-in on the back of my machine. The clicking and crackling appears to only come from the right-hand channel though.

Headphones + charger direct to phone, I have complete silence and perfect audio, as long as music is playing, (IE the codec is running.) Otherwise I get really annoying audio issues.
[G3 Q&A, Help & Troubleshooting] WillJeepForFood:
I get the hissing on my headphones during calls, or when there's no audio playing. Strangely, it's clear during audio playback.
[G3 Q&A, Help & Troubleshooting] online111:
You may remember my entries before about this left headphone channel hissing noise. I made lots of research on this.

Few weeks ago we got 2 software updates. Since then first time i plugged headphone to my G3. Listening same songs as before looks like it has been fixed.

I don't hear any noise at all. Good job LG for fast response.

When I had problem my build no was : Build No: KVT49L.A1402575277

Current software version (seems like fixed)

Android: 4.4.2

Kernel: 3.4.0

Build KVT49L.A1406613943

Software V10i-TUR-XX
[G3 Q&A, Help & Troubleshooting] shaarky:
I get the hissing sound during calls (electric crackling in the background, not sure how to describe that - no headset connected), also this issue do not appear on loudspeaker and also I get hissing sound in the left channel when playing audio using stock headset (didn't test some other).

I was on 10E, now on 10G and no change, no other OTA available for D855 Euro version.

What do you think, is the issue with hissing sound during calls a hardware issue ? I'm sure that the issue with hissing sound on headset will be sorted out using SW upgrade, same as for the LG G2, but issues during calls worries me. Also the phone seems to interact much more with any other speaker (eg. other phone, computer speakers etc.), eg. 20-30 cm far away and it's interacting like a hell with the speaker (taken from another website - "blip ba da blip ba da blip ba da buzzzzzzz" :eek:). When I had LG G2, I didn't have such issues (same position, distance).
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
I also get a bit of machine noise/hiss over bluetooth, which is bizarre.
[G3 Q&A, Help & Troubleshooting] shaarky:
Wrote to CZECH LG support and - THEY KNOW NOTHING ABOUT THAT ! ...so I provided them Google results for "lg g3 hissing sound". Unbelievable.:(
[G3 Q&A, Help & Troubleshooting] Dinger558:
Switching to ART in developer options fixed not only this problem but also the peculiar low volume sound you get whenever you plug in headphones.
[G3 Q&A, Help & Troubleshooting] olivierdo:
they never taste the sound thru the earphones?? yes, unbelievable..
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
ART caused more problems than it solved, for me. I had a lot of apps crashing -- and Facebook messenger wouldn't even run.
[G3 Q&A, Help & Troubleshooting] shaarky:
I meant there are so many reports of this issue, there are already reports of acknowledging this issue I guess by UK LG branch...so I expect that they will be aware of their flag ship issues and providing ETA for fix. And they are not, which means, they are not taking it seriously ( or it may looks like that)
[G3 Q&A, Help & Troubleshooting] lorgie:
No problems with ART. Facebook messenger running flawless like on dalvik
[G3 Q&A, Help & Troubleshooting] Roybenz:
Making call helped me, noise is gone! Hope it comes a fix for this
[G3 Q&A, Help & Troubleshooting] Racer-1:
Hissing is still there with V10j.
[G3 Q&A, Help & Troubleshooting] Gigawatt!!:
Just thought I would share my experience...

I bought a G3 yesterday (Verizon) and experienced this issue... I went to the store today, and unlike many other people here, could not reproduce the issue on the store model, so I got a replacement and I have not experienced the issue on my new device yet.

I listen to audio frequently and will update this post if it crops up again but my experience leads me to believe that this is a 'lemony' hardware issue only, not software (at least not anymore), and not inherent to all G3s... perhaps LG is just a bit inconsistent in their manufacturing.
[G3 Q&A, Help & Troubleshooting] Racer-1:
Did you take a call with the new G3? Maybe you can do a reboot and test the hissing again.
[G3 Q&A, Help & Troubleshooting] adamuiowa:
Easy fix

I purchased the LG G3 this week and was running into the same issue with my left earbud. Constant hissing and crackling sound.

Unplugging the earbuds, making a phone call and plugging them back in completely fixed the issue.

The issue reappeared when rebooting the phone after a few days. Following the same process fixed the issue again. Just something to keep in mind when you reboot your phone the next time. A bit annoying, but definitely not a deal breaker for an awesome phone.
[G3 Q&A, Help & Troubleshooting] grafi97:
I just got the V10h update on my 16GB europian model this afternoon and the hissing seems to be gone so far, hope it stays this way. I listen to a lot of music on my phone, so it would have been a dealbreaker.
[G3 Q&A, Help & Troubleshooting] EpicChineseTime:
Mine is still there... No hissing if i use the headphones while charging the phone....

But normally, i get hissing.

I'm on V10H too.

Sent from from my LG-D855
[G3 Q&A, Help & Troubleshooting] grafi97:
I rebooted and the hissing is back. But at least it seems a little less noticable. I'll probably return the phone but that means at least 3 weeks with a ****ty replacement phone because first they send it in for repairs and will only give me a replacement (luckily not necessarily another G3) if they can't fix the issue.
[G3 Q&A, Help & Troubleshooting] icecicle:
so im having a kind of different problem but relating to the same left side earphone . .everytime i plug something in the music only plays from the right side . . super weird i tried every headphone I have and aux cables in my car all come back with the same results . no music from the left earphone. . don't know what to do =/
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
Did you check your stereo balance in your accessibility options?
[G3 Q&A, Help & Troubleshooting] icecicle:
yeah it's right in the middle where it should be . .gonna take it back to T-mobile tomorrow and try to get a replacement . . i just bought it like a few weeks ago
[G3 Q&A, Help & Troubleshooting] icecicle:
so i walked into tmobile explained my problem showed it to them and as soon as they tried a pair of their headphones it started working . . even on all my headphones .. i don't get it
[G3 Q&A, Help & Troubleshooting] trent999:
Defective aux port. A hardware problem. Might just have been dirty.
[G3 Q&A, Help & Troubleshooting] grafi97:
Weird, I can't hear any hissing at all with my Sennheiser CX-300IIs or any other headphones that has 16 ohm impedance. The hissing with the Quadbeats is still horrible.

Sent from my LG-D855
[G3 Q&A, Help & Troubleshooting] UnwiredDroid:
I have 855 vx10i 4.4.2 and the hizzing sound in earphone is still present. I am using a Audio Technica CKM500 which is awesome with Nexus 4. The bass is very clean but on 855 it sounds like a cheap earphone. I will try to connect to a FiiO amp if it will improve.

Disappointing that my phone (this new G3) is my daily music driver.
[G3 Q&A, Help & Troubleshooting] Varming:
When you connect your earphone does your phone show an earphone or a headset icon? My guess the headset..
[G3 Q&A, Help & Troubleshooting] UnwiredDroid:
The icon is a Headphone. I removed the charger and the sound disappeared (hizzing). But still I am not happy with the stock player. Google play music player has no equalizer too.

I guess I need to find a good music player with decent amp.
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
I have the same issue (sadly). I've just install TWRP recovery, i will try another rom to see if it can solve this annoying sound issue.

Model : D855 32Gb EUR.
[G3 Q&A, Help & Troubleshooting] shaarky:
It's still not yet resolved even on 10l version, not fully I would say
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
I just tested this issue with AndroidNow 1.3 (S7VEN), it reduces the buzzing sound (It's worse with audio BOOST, don't try it). My G3 still can't be my daily music driver, even with this custom Rom. We still have to wait for KitKat v4.4.4 or Lolipop v5.0.

T_T
[G3 Q&A, Help & Troubleshooting] thinx.ninja:
for me the Problem started with the 10l update :(

Before Update no Problems ... Crystalclear Sound. After update the annoying hissing background sound. Switched from dalvik to ART.

Fixed it yesterday. Today the noise ist back again ....

Going Crazy. The Sound was the Main reason for me to buy the phone :-/

Edit:

Just tested the USB Charger trick.

If you plug in your charger before inserting the headphone jack ... there is NO background Noise !! WTF !!

You can pull out the charge after inserting the headphone an Sound stays ok !
[G3 Q&A, Help & Troubleshooting] Racer-1:
You can call a number and after that it's fixed until the next reboot.
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
I do not know this trick, the sound is better but not crystal clear : /

We seriously need an update...
[G3 Q&A, Help & Troubleshooting] thinx.ninja:
thaaanx! It worked! saved my Day If not my Life :D called my home number... but Headset had to be plugged off during Call!

Always forget this things also can act like a Phone :D
[G3 Q&A, Help & Troubleshooting] darthkerrance:
Thanks! This worked for me.

Found another option to more easily fix the buzzing:

For headphones that have a removable jack, first remove the jack/cable from the headphones, then plug in just the cable to G3 (so that the icon displayed is not the headphones/headset but instead shows the 3.5mm aux), THEN plug in the other end of cable to headphones (the G3 does not change the icon to headphones, it still "thinks" it is connected to an auxiliary device).

For me, hissing and buzzing gone (better result than using the "make a call first" trick); a very small amount of background hiss is heard but this is no different to my experience with other devices (Samsung S3, S5 etc). This is a bit easier than making a call or plugging in charger every time. If you don't have headphones with a removable jack, a small 3.5mm male to female extension may work in the same way.......the key is to trick the G3 into thinking it is supplying signal to an aux device, not headphones. Ridiculous that a flagship smartphone has to be tricked in this way! Anyway, I hope this works for others!

A bit of extra info that seems curious........my wife and I both have the G3, currently both on 4.4.2. My device gets the buzzing in the right ear, my wife's device in the left ear. I tested the same headphones with same music apps. I have checked that the left/right channels are correct on both units. WTFH?
[G3 Q&A, Help & Troubleshooting] Racer-1:
Thanks for your report.

I sent my G3 to repair this week. Maybe it's fixed after that. I will report it, when I get it back. Hopefully in the middle of next week.
[G3 Q&A, Help & Troubleshooting] thinx.ninja:
For me the calling Trick works, like Racer said, toll the next reboot. Since i usually never reboot that's the best workaround. In my Device the hissing is on both Channels. That's really some strange Issue with that otherwise perfect Device :-/
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
I have talked with the french LG Support (28/10/2014) about this issue. For my D855 32Gb they advise me to use a task killer to free my ram, it can reduce the hissing in my right earbud.

They said that it is a software issue and LG is actually working and an update will come later to our devices. However, they haven't any date...
[G3 Q&A, Help & Troubleshooting] Racer-1:
Interesting. I've talked to the german LG support and they said it is a hardware issue. My G3 ist currently sent in to LG.
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
Yes, i was suspicious when he/she says to me "you don't need to return your device, for now."

The "for now" thing make me unconfortable. Plus, there is any date, i guess they didn't found any solution yet...

To all owners whoes have the issue, reach LG Support plz. We sadly need a true answer, LG must take responsibility.
[G3 Q&A, Help & Troubleshooting] shaarky:
For another issue see my signature.

Unfortunately it's bug by design, even warranty repair didn't help.
[G3 Q&A, Help & Troubleshooting] ScrapMaker:
I'm still annoyed that I even hear noise over bluetooth...
[G3 Q&A, Help & Troubleshooting] Racer-1:
I got my G3 back today. They checked it and found nothing. So I guess it is a software issue.
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
Do you still hear the hissing?
[G3 Q&A, Help & Troubleshooting] Racer-1:
Yes, of course. They didn't changed out parts of the phone. It's technically the same as before.
[G3 Q&A, Help & Troubleshooting] aymeeeric:
Thanks ! This work fine !
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
Hey i just tried PA-AOSPA ROM with 4.4.4 and the hissing noise in my right earbud is still here....

Should i send my device for repair/change?
[G3 Q&A, Help & Troubleshooting] shaarky:
I would suggest to wait till some recognized developer will take a look on Kernel sources to figure it out.... like on G2.

It should be fixable similar to LG G2.
[G3 Q&A, Help & Troubleshooting] pepezpz:
I really hope that it can be fixed. I also tried pa-aosp rom and was so disappointment that the hissing was still there...... Has anyone noticed that hissing is gone with some ROM? Cyanogen or liquidsmooth etc....?
[G3 Q&A, Help & Troubleshooting] thinx.ninja:
Android 5.0 is coming, maybe it's fixed with that? let's hope the best :)
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
I m going to try it now :)

Let's see.

---------- Post added at 08:57 AM ---------- Previous post was at 08:08 AM ----------

The hissing is still here with lolipop (Kernel 3.4.0).
[G3 Q&A, Help & Troubleshooting] thinx.ninja:
:( damn!

Do the Workarounds still work (making a call, etc..) ?

otherwise i would rather stick with my older Android...

thx for testing!
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
i tried with Rin Kernet 1.7. It's not better (ROM Android 4.4.2) :(

The audio'tricks don't realy work with my device (not at all or just for a short periode of time).
[G3 Q&A, Help & Troubleshooting] thinx.ninja:
for me making a call (unplugged headphone) works till reboot... Stock Rom. Version, Kernel etc. in Screenshot
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
this trick never worked for me..

it seems that it's a hardware issue, plus, the issue came from my right earbud. People speak about the left one. T_T
[G3 Q&A, Help & Troubleshooting] thinx.ninja:
for me it's in both Channels. (but Only since the last Software Upgrade :( )
[G3 Q&A, Help & Troubleshooting] two_handed:
I dont think its a Hardware issue if some People can fix it with making a call until reboot.
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
I agree, the fact is that this trick doesn't work with my device :/
[G3 Q&A, Help & Troubleshooting] Biou_Pilgrim:
I ve tried some Android 5.0 ROM and Rin's Kernel, the hissing in my earbug is still here. I can't use some trick none of them because work with my device : /

I send it back for replacement...

Wellcome back to my G3. They repaired it, i don't know what they did but the hissing is gone. The issue was hardware...

It was just a placebo. The hissing is still here even with lolipop. I am exhausted trying to fix this issue...

03/12/2014 : V20C Kernel give me an excellent hissing noise

reduction !
[G3 Q&A, Help & Troubleshooting] Racer-1:
Hissing is still there. Even with V20e and in CM12 too. Really annoying.
[G3 Q&A, Help & Troubleshooting] Rayayama:
Got a second G3. Before update the problem is on the left channel. After update it's on the right.

i contacted LG two times and they knew nothing of this problem, i should get a replacement so i contacted Amazon. Funny thing is that Amazon does know the problem and he even said that LG is working on it to patch it....

Even so, if u can depatch your cable from the earphones and insert it this way, the phone thinks it's an aux cable. connect your earphones back to your cable and now the Problem is gone!:silly:

my suggestion is that the sound chip has 2 modes. battery mode = Power saving for headphones . Charging = full power ( if u connect the headphones while on charger the problem is also gone, even after disconnecting the charger)

i don't even know why the phone can make a difference between them or why it should....it's still 3,5 mm jack so why does the damm phone has to make a difference between them...:rolleyes:
[G3 Q&A, Help & Troubleshooting] genes1s:
I can confirm this!

Thank your for this trick. You made my day.
[G3 Q&A, Help & Troubleshooting] pereira6david:
Viper4droid solve the problem for me. I choose the high quality driver and it's OK.
[G3 Q&A, Help & Troubleshooting] pepezpz:
Witch rom you are using?
[G3 Q&A, Help & Troubleshooting] pereira6david:
I was using resurrection remix 5.2.7 but I'm on androidnow at the moment. Had to check if it do the trick.

---------- Post added at 11:18 AM ---------- Previous post was at 10:43 AM ----------

No problem on androidnow 8.3 too.
[G3 Q&A, Help & Troubleshooting] pepezpz:
Ok thanks but for me it isnt working.....[emoji17]
[G3 Q&A, Help & Troubleshooting] christopherwoods:
I was experiencing this problem on 4.4.2 -- I did all of the LG software updates to bring me to v10L (UK unlocked model) but the problem persisted.

the last update it offered me was the Android 5.0 OS update -- hurray! I installed but while I thought it fixed the audio problem, it did not (unlike I first thought :((

I didn't try switching from Dalvik to ART in the Developer options whilst I had 4.4.2; I noted someone on here commented that for them doing that worked as it regenerated the bytecode for all apps which allegedly fixed the problem (not sure whether that's the exact reason for the problems going away, but it's moot now!)

I'll still keep Android 5 because it makes the handset snappier and it's quite pleasant to use, but incredibly frustrating that the audio still suffers because it's otherwise a great phone.
[G3 Q&A, Help & Troubleshooting] Racer-1:
The Lollipop update doesn't fix the audio issues. It's still present even with AOSP.
[G3 Q&A, Help & Troubleshooting] christopherwoods:
You're correct, I posted a bit eagerly and I noticed it later. :(
[G3 Q&A, Help & Troubleshooting] :
Has every G3 phone this sound problem? Or might it be that if I buy one now, they allready fixed it? For me the LG G3 would be the perfect phone if everything works.. :(
[G3 Q&A, Help & Troubleshooting] drondron:
I might have found a workaround for this

I have tested 3 LG D855 and all of them have noise/static/high-freq leak from the processor out to the headphones. It might be a faulty design for the headphones amplification stage for headphones (when the headphones logo appears on the status bar). However, when using line level output (the jack appears on the status bar) the problem does not reproduce.

Therefore the workaround I've found is to trick the phone into line level output mode and then plug the headphones. To do this you need to plug in a 3.5mm jack extensor or a 2-to-1 3.5mm Y-adapter with no load, that's it, with nothing connected to it. At that moment, the phone will activate the line level output mode. Only after that you will connect the headphones, and you'll see there are no artifacts on the audio.

That being said, I'm not sure this will work with all kind of headphones as I have only tried with mines that are low-impedance ones, but on those it works perfectly. To be checked if the level of the signal in line mode is enough to drive other headphones.

In any case, it is a shame this happens with a high-end and expensive smartphone. I was hopping this will be fixed in a newer hardware revision but I got two replacements of mine and no luck. I have read somewhere this might be a flaw in Snapdragon 801, as it integrates completely the signal routings but isolates badly highfreq noise from processor stages, etc. etc. but I do not remember where I did read it unfortunately.

I hope this helps!
[G3 Q&A, Help & Troubleshooting] hunde:
have the same problem!

nothing could help. really frustrated!
[G3 Q&A, Help & Troubleshooting] hunde:
there is no LG official solution to the "awful hiss in the left channel" issue till now !

can't understand why such a huge South Korean company won't cope with this.

anyway, people have their tricky ways to handle it :D

i hate LG :(