Database Develop

in-call static/interference/resonance/noise problem

Hi guys,
i think there's a problem in my i9000;
whenever i make a call, i can hear low static interference in the background.
i searched both on xda and elsewhere, and although some other people complained of this problem, no one was able to determine the cause or provide a solution.
i tried different roms, froyo and gingerbread samsung roms, in addition to cm7, with different kernels and modems, heck i even changed my csc(just for sake of changing everything to make sure.. all for nothing. the problem persists.
Does anyone know what might cause such problem and how it may be solved?

i have exactly the same problem. Like you; i tried every combination which i can. I think main cause of the problem is hardware related. But my opinion is ,it can be fixed with device drivers. I looked at service manual. In the speaker part of the service manual,you can see there are two inductors and one capacitor before the speaker module. You can see the full circuit in Service Manual Page 42.
h**p://img191.imageshack.us/img191/2383/speakerj.jpg
I think these inductors(L209,L210) are interferencing with the GSM frequencies and making that static sounds on the background.
We need someone who is an expert on linux and device drivers. Maybe he can show us to find a way to break this circuit(temporarily turn off B1 and A2 pins) in a call so it will not make that sounds.
In the other hand we may have defect phones. May be the only way is to change some parts.
sorry for my bad english.

I think there's something wrong with the speaker itself.
I'm taking the phone to samsung's maintenance to see what they have to say about it.
I'll report back once i get to the bottom of this..

Same here, but it's not constant, just happens enough to be noticable, bloody annoying, and only started (or I only noticed it) a couple of days after JVP. Will be interesting to see what you find out...

One possibility, do you have your phone in a magnetic flip case? Worth checking
Sent from my GT-I9000 using XDA Premium App

slaphead20 said:
One possibility, do you have your phone in a magnetic flip case? Worth checking
Sent from my GT-I9000 using XDA Premium App
Click to expand...
Click to collapse
No magnetic flip case, just a hybrid (plastic back+sillicon frame) cover.
I even took it off for a while to see if it was causing the problem, but no.

I went to samsung service center and they said it will cost about 200$ because the ear piece comes with the touchscreen..
Meaning i would have to pay for a new touchscreen even though i only need the ear piece.. How about that for service.
I checked ebay and found the whole ear piece+speakerphone+headphone jack in one bundle for 15$
so guess what my next step will be??
Buy and install the ebay part, sell my i9000(never liked tw anyway+cm seems a long way from home).. Had enough samsung for one lifetime

are you sure about the sound is coming from the earpiece ? i am asking because few weeks ago i was also assuming that the interference sound is coming from the earpiece . But i realized that it is coming from the rear speaker. Can you test it ?. In a call ,turn back the phone and put speaker hole to your ear. The interference sound is so loud that you can hear it from the earpiece hole.

yaso06 said:
are you sure about the sound is coming from the earpiece ? i am asking because few weeks ago i was also assuming that the interference sound is coming from the earpiece . But i realized that it is coming from the rear speaker. Can you test it ?. In a call ,turn back the phone and put speaker hole to your ear. The interference sound is so loud that you can hear it from the earpiece hole.
Click to expand...
Click to collapse
my god, i think you're right.. it does sound like its the speaker..
what can i do to fix it?

jaikat said:
my god, i think you're right.. it does sound like its the speaker..
what can i do to fix it?
Click to expand...
Click to collapse
jaikat said:
my god, i think you're right.. it does sound like its the speaker..
what can i do to fix it?
Click to expand...
Click to collapse
This is the question which i am also looking for answers
Everyday i am searching for answers. Only a very few people experiencing this problem.
I think this problem is coming from the inductors in the speaker circuit part. You can look my first post .
yaso06 said:
i have exactly the same problem. Like you; i tried every combination which i can. I think main cause of the problem is hardware related. But my opinion is ,it can be fixed with device drivers. I looked at service manual. In the speaker part of the service manual,you can see there are two inductors and one capacitor before the speaker module. You can see the full circuit in Service Manual Page 42.
h**p://img191.imageshack.us/img191/2383/speakerj.jpg
I think these inductors(L209,L210) are interferencing with the GSM frequencies and making that static sounds on the background.
We need someone who is an expert on linux and device drivers. Maybe he can show us to find a way to break this circuit(temporarily turn off B1 and A2 pins) in a call so it will not make that sounds.
In the other hand we may have defect phones. May be the only way is to change some parts.
sorry for my bad english.
Click to expand...
Click to collapse

i have this problem too, i live in Romania, i tough my phone was broken, but a friend's phone also does that.
i notice it when making call while 3G data was running in the background. If 3g is off = no noise.
Also i have noticed, the way you hold the phone affects it. try holding it with 3 fingers to your head the covering the mic hole with the other. you should hear some interference right there. so it's probably: speaker+ extra sensitive mic + some antenna things
Also my friend had the phone for some months now and never noticed it i searched the web and we're not alone, i found this discussion on a couple of other forums, still nothing to do, or nobody reported back after they whet to the warranty service. i would go, but i don't have any warranty on mine.

I'm also from Romania and I noticed this annoying issue today. All my other friend with Galaxy S also have this problem, so I guess it's a normal thing.
The only solution, I guess, is to use 3G networks, at the risk of draining a bit more battery.

so bottom line is that on mine, i hear noise/buzzing/interference when i use 3g networks both on the speaker on the back and the earpiece (it's louder if i use 3g data while i'm making a call) - the issues goes away completely in gms(2 g) mode
and it depend on how i'm holding it - it's louder if i grip the phone in my hand (probably the wireless signal is lower and the phone increases the power needed to communicate to the network thus experiencing buzzing sound from the speakers like radios did back with the first cell phones before receiving a call)
so i guess i'm not the only one, right?

This issue is normal I think. No big deal. If the noise however gets so loud that it interferes with your call, get it changed. But the new ones you get might have the noises too. So what is important here is to keep the noise to the minimum.
With / Without the noise is totally an unknown cause now. At least have it settled to the least noisy.
*This is happening to everyone who is getting the phone since November 2010

I confirm this issue with more models.
Hi guys!
Bought myself my GT-S5570 (Galaxy Mini) a couple of months ago. This is my first Android experience. At first I was pleased, but then I noticed this static noise whilst in call. It's like, suddenly I can have ill-isch, distorted, "noise spikes" sort of things. Left my phone in for service under warranty. When I had it back, it was still messy. Bought myself a GT-5660 (Galaxy Gio) a week ago, thinking that this one would clear the issue. It's still there, though. I'm wondering if this is something that affects the whole Galaxy series, even the tougher models like S/S2.
Related threads, by me:
android.net/forum/samsung-galaxy-mini/60951-sudden-volume-spike-during-call.html
androidforums.com/samsung-galaxy-s/307523-samsung-galaxy-s-gt-i9000-static-ear.html

yesterday my cousin bought i9000 too. First of all i looked for the noise. It is interesting that that phone is nearly noise free. If i gave 10 point noise to my i9000 than that phone will be 2 points. You can hardly hear the noise. After that i get her SIM card and test my phone with that sim card.Noise is still there.I make that phone software same with my phone. That phone still has no noise.
I think the problem is in phone parts. Maybe a defected series of speakers used in our phones. I will buy a new speaker module on internet. I hope that fix my problem.

For me it depends more of the network I use than the phone. It happens sometime with an iPhone.

as i stated in my previous post in this thread, in my case i was sure it was the loud-speaker, i say "was" because i sold the phone, and thats the reason why i didn't come back to this thread since..
it seems there was something wrong with the loudspeaker(on the back of the phone), and it was, at least to me, one of those things where a person might not really notice unless you're looking for it.. my bad luck had caused me to flash a certain modem and the reception was bad, so once i reverted to the previous modem i was checking for the sound clarity and that was when i first noticed the static during calls..
then i realized it was coming from the speaker, as one good man in this thread suggested. i couldn't handle it though, i could hear it every time i make a call..
it didn't make a difference whether i was on 3g or gsm or both, it was always there, unless i went into airplane mode..
so i ended up selling the phone, and bought another, but before i had bought it i put my sim inside and made sure there was no static, and there isn't, whatsoever.. thank god.
i'm sorry i couldn't find any other solution to the problem, samsung service here had said they would replace the speaker, as the part comes on its own, unlike the case for the phone speaker, which, according to samsung, is bundled with the screen, and if i had wanted to change it i would have had to pay something like 200$ to fix...
those who have this problem, check if its the loudspeaker on the back of the phone is the actual culprit, and if it is, try to find a way to replace it or something, that is if it bothers you this much. or you can just sell the phone, there's a 99% chance those who buy it won't notice anything, because they're not looking for it..
good luck guys..

Galaxy note voice call echo

I just recently bought my Gnote from Newegg and found there is an echo when I make phone calls. I think the phone is a French version since there were french written on the phone box. Now it's just the people on the other line that can hear the echo. I narrowed it down to the mic on top of the phone. When I cover that mic hole, there is no more echo for the other person.
I'm wondering if my phone is defective or is there a setting that I can change to stop this. I tried turning off the noise reduction and that help reduce the echo a bit. The phone case I have on it doesn't seem to be affecting the echo. Has anyone else have this problem? Phone was already unlocked from the box so I assume it's been rooted. Please help.

I haven't noticed any issues with my Note so far but if your phone has already been rooted maybe its a software issue. Have you tried using a different software for it, perhaps one of the roms on the forum here. I am currently using rocket v8 with abyss note kernel 2.1 and things are great. I'm no expert but it's worth a try.

I also have this echo issue. This is especially the other end who notice this. I use a Swiss Sunrise SIM card. I tried another SIM from Swisscom and no echo. So i call Sunrise who is working on this.
So at the moment i cannot tell if this is a Gnote or Provider problem.
I will try the Mic suggestion but i thought Gnote has only one Mic??
Where are these Mic located?
I found where are these Mic located. In the quick guide comming with Gnote it is said that top Mic is used only when Speaker or video recording are activated.
Maybe this Top Mic is actvated all the time! How can it be deactivated?
---------- Post added at 03:20 PM ---------- Previous post was at 02:38 PM ----------
Look here, same issue...
http://forum.xda-developers.com/showthread.php?t=1344659

During the call, you need to go to menu and turn off noise reduction. This will solve the echo problem but is only set for that call, ie you need to do this every time.
There is a MOD for this:
http://forum.xda-developers.com/showthread.php?t=1355405
However.. since I upgraded to Gingerbread 2.3.6 this problem seems to have disappeared for me.

apprentice said:
During the call, you need to go to menu and turn off noise reduction. This will solve the echo problem but is only set for that call, ie you need to do this every time.
There is a MOD for this:
http://forum.xda-developers.com/showthread.php?t=1355405
However.. since I upgraded to Gingerbread 2.3.6 this problem seems to have disappeared for me.
Click to expand...
Click to collapse
I am GB 2.3.6, and i still have this echo issue.

Same problem here but only a few times. Thought the echo was caused by coverage reception?

Its mostly caused due to RAM shortage,e.g.if a large or too many applications are running in the background at the time when the call came in.

I've had this echo issue for the callers in the other end from when I got my Note in December. Two version of GB and now finally ICS and the problem is still there. Today I went to the service center and the changed a lot of parts in the phone (mainboard, mic, receiver ...) and when I got home the problem was still there. I've been troubleshooting this for a few hours and found that using the phone without any case has the problem, with a case it's worse. And, when I remote the back cover of the phone, the problem goes away completely. Anyone else still have the problem and experiencing the same thing? Just call someone, confirm the echo and then remove the back cover of the phone, for me that resolves the problem completely every time. So, what did Samsung do wrong here? Are the sound travelling in the back cover from the speaker to the bottom microphone? Are there any pressure made by the back cover which cause this? Why is the problem worse when I add a case on the phone?

My solution to echo
I had the same problem. My solution is/was simple -- hold the earpiece tight into your ear. The echo for the receiver goes away.
The echo was caused by the phone picking up the sound from the Note's earpiece. I always have the phone on max volume so this made it the worst.

Latest CM9 nightly turns dual mic off by def.. Fixes echo.
Sent from my GT-N7000 using xda premium

I got my phone completely fixed today. After realizing that removing the back cover fixed the issue, we also found that removing the pen fixed the issue. So, replaced all back plastic, new back cover and new pen, still problem wasn't fixed. So only thing not replaced was the screen, replaced the screen and problem was fixed. The service-tech told me after that the antenna part from my phone and the new parts was different. I had one of the first batches Note's that came to my country. Now the phone is perfect, even when I have it in a case which did amplify the problems before.

echo in note fix
Hank K said:
I had the same problem. My solution is/was simple -- hold the earpiece tight into your ear. The echo for the receiver goes away.
The echo was caused by the phone picking up the sound from the Note's earpiece. I always have the phone on max volume so this made it the worst.
Click to expand...
Click to collapse
My note developed this problem after my charging post was replaced by the authorized service center. Probably something happened when they opened it and re fixed. When I complained of the echo problem they reluctantly took the phone but only to return it after hard reformatting which did not solve the problem.
I noticed the the following:
1. Echo disappears if the phone is pressed hard to ear thus preventing sound from reaching secondary mike.
2. No echo if back is removed and used exposing battery, etc. I am still puzzled by this as sound should still be traveling from speaker to mike.
3. After several weeks of experimentation, hundreds of test calls, reading several posts (many gave placing pieces of visiting card over speaker and mike after opening up the phone and closing the phone-it did not work for me even after several attempts), I found a solution which worked well.
4. Close/seal the secondary mike hole at the top with a sellotape and test. and it worked well. Then I opened up the phone (9 screws, removing back with priser, etc) and placed a small piece of vising card strip inside the mike hole and closed the phone. Thus no unsightly taspe is visible. You can even sell it in second hand market if you haste your phone!
No problem ever since. You can testy it yourself as it is easy to place the tape.

My experience
Sorry for my englisn. I wanna share my experience of fighting with the same echo problem in my note3. I tryed to solve problem about mounth. I have stock rom no rooted. When android changed to kitkat I anderstood that problem was in hardware. I opend my phone and tryed to isolate upper microphone. No effect. Yesterday I brought my phone to service. Master assessed upper and lower microphones by *#0*#. I heard myself that lower microphone was much more queit. He cleared canal of lower microphones and problem was solved!

troubleshooting of everyone calling me hearing an echo

Hi! I have successfully conducted troubleshooting of everyone calling me hearing an echo of themselves!
Turns out, there appear to be two settings for microphone detection.
1st when it's uncovered, and the communications are nornal and working well
2nd where it's covered, and the detection is amplified to still hear the op3 user same as before
Problem with the second is, that it detects sound from upper part of the phone, so the other party hears themselves.
In my opinion, the lower limit of detection switching it into 2nd option is too high, because even when uncovered it happens sometimes in bad conditions, far more using phone cover (yes it has microphone uncovered, but there is noticeable difference).
If possible, that limit should be lowered, or the function altered because this echo isn't something a phone of this rank should have.
*I've only assumed how it works by observation, there may even be a curve? That could also be altered. Anyways, it really is an urgent fix in my opinion, I don't know about the rest of you.
To reproduce it, remove cover, take two phones, and call the second phone. Listen to second phone, and cover/uncover microohone on op3.
It happens on stock software or any other rom/framework I've tried so far.
I'm not a phone developer myself, but hope someone can work with this.
Regards, JerryBond

Being a stock issue in hopes of being noticed before the P release and possibly being fixed there, if it's too deep to be fixed in earlier versions? I'm not an expert, but rather safe than sorry, no?

No, you should report IT with oneplus itsself.

Question Zenfone 8 problems with speakerphone during phone calls

Hi,
Has anyone have such problem with speakerphone during phone (or whatsapp/viber etc) call that
All MIC's passes tests OK, record and then play my voice very well and loud.
But when I call someone or someone call to me and I active speakerphone to put phone away from my ear - there are mess like echoes, some robotic voice like signal excitation and interference started each time for person on the other end of the line. Person hears himself more often than my voice. So it's impossible to talk normally on speakerphone. I hear companion very good, but for him it's mess. But if I deactivate speaker and use earphone (in front of my ear) - then everything is ok for me and person on the line.
Does anyone know what could be wrong? Problem persists on each FW which means that problem is hardware. I checked all mics in ,12345+= test utility. Every single microphone is ok. But it seems that when they work together - sometihng is going wrong. There are 3 mic's in this phone. First one is located on board 90AI0060-R10010 (bottom left corner), and this part can be replaced, it doesn't cost an arm and a leg. Second one is located in top upper part on main board and it looks like it can only be repaced by replacing motherboard which is cost a lot of $$$ which is not acceptable for devices not covered by warranty anymore (unlocked BL). Third mic installed on board 90AI0060-R10020 under back cover (where rear camera is located) and also can be replaced, price about 10USD.
But where is controller/unit which operate by these mic's?
Is there anyone who has or had such problem? What part(-s) were replaced is service under warranty?

Hi
I hat similar problems. I tried a lot of adjustments at the apps and the phone. Set the phone to factory settings. Nothing helped. Even the upgrade to Android 12 didn't change anything. Finally I sent it for warranty repair to Asus workshop and now I am waiting to get it back. Hopefully tomorrow I can tell you the result.
Greets KC1

KC_1 said:
I hat similar problems.
Click to expand...
Click to collapse
Ok, please also let me know (if possible) what part(-s) will be replaced.
There are 3 microphones in our phone. And I guess two of them are operate during phone calls on speaker. Main mic on sub-board which is located at the bottom of phone and second one - noise-canselling MIC which is located on motherboard (top part of phone).

Hi, today I've got it back. The workshop protocol says they made a firmware reset (same I already did before and told them). And the result is, the fault is still the same. This was second time I sent it for repair. First time the WLAN module broke down. They changed the motherboard and after getting it back from the asus workshop the the speakerphone function didn't work any more. You can see, there are absolutely specialist at work.

Low front speaker volume during call and test SM-N950F

Hi,
I have a Note 8, now about 4years old. I began having issues with front speaker during calls about 2 years ago -about 2 months before warranty ended. First it was intermittent, about every 20calls, the speaker was so quiet, if I had aircon working, I could not hear anything.
During a period of about a year, it came so far that every call is problematic. I had a company phone with 2SIM so I put both in and I was ''happy''. BUT STILL MY 1000€ phone had speaker problems after 2-3years.
Now I got around - read got time to tinker - to fixing this issue and get my nice powerfull phone back in use.
As I was not to carefull with water (rain drops) on my phone - its IP67 or68 even - my first thought was that the speaker got wet. I ordered China replacement and bought 5pcs just to be sure one will definitly work.
Tried it with all 5 pcs + original and resault was the same. LOW volume. Yes I checked the contacts and cleaned them but no oxidation or any other clear issue with the HW.
I started googling for the problem and found that this was a problem on Samsung phones, though ''very'' rare. Solutions were usually in the line of restart/farctory reset/check settings of the phone and it will be OK. Tried factory reseting/settings.. and no luck, still have the problem.
Now I found a site with info on how to get inside Diagnostic SW in the phone. Got inside, tested and result was low volume.
I also found some info, that if the top mic had dust in the hole, the noise cancelation did somehow lower the output volume on the front speaker - not sure if this is legit info, I don't see how noise cancelation could interfere with received sound output. Just to be on the stupid safe side I removed the protection film on the case for the mic and cleaned it. No affect.
Now I do not know where to turn, if this is a SW or HW issue. I will be calling the Samsung distributor in my country tomorrow to ask what would be the solution, but from my previous experiance I am predicting the response - no solution or your motherboard needs replacing with cost of about 500€.
Just to get the idea how low the volume is - My wife and I bought same phone on same day, so I have a good comparison. Yes she does not have any issues and no I will not open her phone to check for my ''dead'' speaker funcitonality.
If I call the phones and put her on lowest sound setting, mine is still about 30% lower with setting to max. This result is same either phones are in same room or in different rooms - just to be sure the noise cancelation is not interfering.
Do you guys have any ideas/experiences with this issue? How did you fix it?
If you suggest reflash the phone, where can I find original ROM?
Hope you guys can help me.
Thanks.