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Old August 3rd, 2011, 01:12 PM   #1 (permalink)
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Default Samsung Galaxy S2 Echos with case on

Hi,

I have recently purchased a Samsung Galaxy S2 and a case for this on ebay. However when I make calls when the case is fitted the other caller hears their own voice echoing. I bought the case off ebay and it seems fairly decent - nothing is blocked so I don't know why its echoing when the case is on. Are their any fixes out there?

Thanks

Ben

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Old August 3rd, 2011, 07:31 PM   #2 (permalink)
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Tell the person noting the echo to clean his or her ear canals.
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Old August 4th, 2011, 02:26 PM   #3 (permalink)
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It os a mic problem, hopefully fixed with fw, I dont get people complain about it as often now but im not convinced.....people could just be expecting it and not bothering to tell me!
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Old August 11th, 2011, 07:41 AM   #4 (permalink)
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Hi Ben,

I had the same problem.

1. The Echo that you hear can be solved using the Noise reduction button during a called. Press the lower left hand corner of the screen and the noise reduction button will be on the bottom right side.
2. Another test you may want to try if people you are calling cannot hear you clearly.
You can use the voice recording program and record your voice and listen to it. i\If its still very soft the problem should be the microphone in you handset. Brought mine to the service center and was told that some rubber has blocked the sound intake hole and it was an easy fix got my phone back on the same day. Everything is good now.

Mark T
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Old August 11th, 2011, 11:07 PM   #5 (permalink)
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Just note that there are holes for the mic both at the top and bottom of the unit - maybe one of them is covered?
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Old August 15th, 2011, 04:26 PM   #6 (permalink)
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Hi,

Similar to Ben's thread above. I bought a nice case for my Samsung Galaxy S2 from a private seller on Play.com which looks absolutely great (and yes has all the holes in the relevant places!!) but everyone I call claims to hear their voice echo on each call until I take the case off and its then clear! Hardly coincidental I think! the case is described as 'Unbreakable Super Hydro TPU Gel Case' just in case it makes a difference. Any ideas guys as its a lovely case?....

Thanks

Martin.
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Old August 16th, 2011, 02:16 AM   #7 (permalink)
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Hi Martin,

I bought exactly the same case and had the same problem. I ended up buying a Bareley there case from amazon for £14.95 which worked fine.

Ditch the case.

Ben
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Old August 19th, 2011, 04:51 AM   #8 (permalink)
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Also covered in this thread -

http://androidforums.com/samsung-galaxy-s2/357910-voice-echo-anyone-else-getting.html
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Old August 19th, 2011, 05:16 AM   #9 (permalink)
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Quote:
Originally Posted by system243trd View Post
Hi Martin,

I bought exactly the same case and had the same problem. I ended up buying a Bareley there case from amazon for £14.95 which worked fine.

Ditch the case.

Ben
The Barely There is the BEST!
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Old August 23rd, 2011, 05:52 AM   #10 (permalink)
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Can confirm tonight that this issue has been solved....... Done so by many test calls to the wife with SG2 in various states.

1. Remove you case and there is no echo
2. Cut larger holes around mic holes and this lessens the echo
3. Turn noise reduction off and there is no echo....

So it appears the combination of the case and NR creates the echo effect... Now I don't want to remove my case but also don't want to have to turn NR off every time I get or make a call, can anyone tell me how to make NR off the default setting.

Regards
Ross
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Old November 5th, 2011, 06:04 AM   #11 (permalink)
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Quote:
Originally Posted by rossstewart View Post
Can confirm tonight that this issue has been solved....... Done so by many test calls to the wife with SG2 in various states.

1. Remove you case and there is no echo
2. Cut larger holes around mic holes and this lessens the echo
3. Turn noise reduction off and there is no echo....

So it appears the combination of the case and NR creates the echo effect... Now I don't want to remove my case but also don't want to have to turn NR off every time I get or make a call, can anyone tell me how to make NR off the default setting.

Regards
Ross

did you ever find out how to make nr off the default? xx
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Old November 18th, 2011, 03:33 PM   #12 (permalink)
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Default Muffle NR mike to prevent echo

I agree with SplashAlice. The problem seems to be that the small hole in the top of the case for the noise reduction mike somehow amplifies noise from the speaker and feeds it back into the mike to cause the caller to hear an echo. This can be shown clearly by testing first with the cover completely on and then with the cover folded back from the NR mike when the echo disappears. Another test is to place a finger over the NR mike case hole when again the echo disappears. My solution is to cut a very small piece of cloth to cover the NR mike - held in place by the case; although I will probably put a dab of silicon on it when I next remove the cover to be sure it cannot slip. This completely removes the echo. Probably the same result would be achieved by a piece of tape over the NR mike, but this would disable the NR system completely and the cloth muffle achieves removal of the echo without disabling the NR system. This solution is cheap, simple, tidy and entirely reversible. But does it work for others?!!!
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Old November 22nd, 2011, 11:20 AM   #13 (permalink)
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Quote:
Originally Posted by g4btn View Post
I agree with SplashAlice. The problem seems to be that the small hole in the top of the case for the noise reduction mike somehow amplifies noise from the speaker and feeds it back into the mike to cause the caller to hear an echo. This can be shown clearly by testing first with the cover completely on and then with the cover folded back from the NR mike when the echo disappears. Another test is to place a finger over the NR mike case hole when again the echo disappears. My solution is to cut a very small piece of cloth to cover the NR mike - held in place by the case; although I will probably put a dab of silicon on it when I next remove the cover to be sure it cannot slip. This completely removes the echo. Probably the same result would be achieved by a piece of tape over the NR mike, but this would disable the NR system completely and the cloth muffle achieves removal of the echo without disabling the NR system. This solution is cheap, simple, tidy and entirely reversible. But does it work for others?!!!
I tried to tape it (btw my case(s) do not cover the NR) but it did not help. it is not NR (i have 2.3.5)
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Old November 28th, 2011, 04:04 PM   #14 (permalink)
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Exclamation Major Galaxy S II issue that needs to be brought to light!

Hey everyone, I know this is going to be a lengthy post but do please read on and feel free to post your thoughts.

Here's the story... I have had my Galaxy S II for 4 weeks now and every phone call I have made & received has been problematic. Everybody I spoke to was complaining about poor quality, an echo to be more specific, they reported their own voice was being echoed back but the call is always fine on my end. What this means is the call is almost impossible to hear for the other person and they end up calling me back on another phone, its driving me mad and it really is a big issue so I decided to get it exchanged with the company I got it from (Dial-A-Phone). I only arranged the exchange today so I have to wait 3 - 5 days for the bag to arrive to post it back in.

In the meantime I was looking online to see if anyone else had this problem and I came across THIS thread here on AndroidForums. So it looks like it's not just me its actually a lot of people and seems like it's most Galaxy S II's! It's only a VERY SMALL number of people not affected! Reading the posts on the thread its clear to see that the problem only exists when a case is on the phone and that is exactly what I have been finding (I have a CaseMate Gelli).

So this is now making me think exchanging it will be pointless as the new unit will most likely be exactly the same... I did some more looking around and was pretty shocked to find how many people have this issue. I simply searched Google for "Samsung Galaxy S2 call echo" and there are a lot of results, they are all the same issue just on different forums and posted by many different people.

So my options are as follows: Not use a case which I don't want to do because I want to protect this expensive phone, take it out of the case everytime I get a phone call but that is not practical in any way! people have also said to turn off Noise Reduction when a call connects but again I don't want to have to hit "Menu" > "NR" everytime I answer or place a call! Other people say that putting tape over the Noise Reduction mic and cutting bigger mic holes in the cases makes the problem better... But once again I should NOT have to do this! I should be able to use the phone with all functions normally with a case as protection, especially as this is one of the best phones of the year, costs about £500 and none of the other brands such as HTC have problems like this!

A friend of mine who also has this issue showed me THIS - This is a case on Amazon.co.uk and if you read the review entitled "The FACTS about the Galaxy S2 echo problem & the Case-Mate Tough Case" you will see another person who has had the issue and Samsung even tried to cover it up by discontinuing their own case because it was uncovering a problem with their flagship phone.

Anyway that's probably enough on the subject but I just thought this needs to be brought to people's attention and I am also stuck on what to do, As I said I should not have to do any silly workarounds or not use a case, and exchanging it is 99% certain to be pointless... All I can think of is get the replacement phone brand new, don't open it and sell it on eBay brand new then buy a different phone like a Galaxy Nexus for example. But it does annoy me because I love the Galaxy S II, it's a great phone in every way, its just this that ruins it.
Finally, what do you guys think I should do?

Thanks for reading this and feel free to contribute, I just think this needs to be brought to light instead of just secluded in various forums, afterall, its a phone and if the phone calls are useless it's not going to be very good for many people.
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Old November 28th, 2011, 04:36 PM   #15 (permalink)
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Not a new issue I'm afraid.

There's a thread, started way back in June with about 60 posts, related to this already:-

Voice echo. Anyone else getting this?


I must say, that I use the CaseMate Tough case with no echo problems at all. The same goes for the official Galaxy S11 mesh case.
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Old November 28th, 2011, 04:50 PM   #16 (permalink)
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I use the "case mate barely there" and I've never had this issue before. Call quality is fine. Guess Im lucky.
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Old November 28th, 2011, 04:51 PM   #17 (permalink)
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I have had no complaints on my SG2 and in fact compliments that it sounds better than my 4S. I have only heard an echo one time in the months of use and it was because I was out in the woods with zero bars.

There might be some having a problem but not the majority as your post seems to indicate.
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Old November 28th, 2011, 04:53 PM   #18 (permalink)
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Quote:
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I use the "case mate barely there" and I've never had this issue before. Call quality is fine. Guess Im lucky.
My favorite case. It adds no bulk to my phone and protects it from the everyday scratches.
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Old November 28th, 2011, 05:06 PM   #19 (permalink)
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So, this is a case problem rather than a 'major' Galaxy S2 issue?

Easy answer - don't use a case.
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Old November 28th, 2011, 07:05 PM   #20 (permalink)
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Over a month with a case and no call/echo issues. None!
I bought my case from my carrier and if not mistaken, seems identical to a barely there case.
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Old November 28th, 2011, 09:10 PM   #21 (permalink)
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I've used two different SGS2 models over the past 3 weeks - Latin America and UK unlocked GT-I9100s. Neither had this issue. If this were truly an issue that affected "most" users as you claim, then there would have been major headlines and a recall. Clearly, this is one of the more common defects, but based on the thread, a <1% affected rate would be an educated guess.
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Old November 29th, 2011, 05:48 AM   #22 (permalink)
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Originally Posted by Medion View Post
I've used two different SGS2 models over the past 3 weeks - Latin America and UK unlocked GT-I9100s. Neither had this issue. If this were truly an issue that affected "most" users as you claim, then there would have been major headlines and a recall. Clearly, this is one of the more common defects, but based on the thread, a <1% affected rate would be an educated guess.
The OP is admitting it is the case.

Samsung can not be held responsible for cases that are interfering with their hardware.
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Old November 29th, 2011, 06:23 AM   #23 (permalink)
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exactly, they can't do anything about it because its a 3rd party accessory, i called them and they said its a known problem but they can't do anything about it because the device on its own is fine. but i want to use a case because i dont want my phone getting scratched etc...
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Old November 29th, 2011, 06:33 AM   #24 (permalink)
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Quote:
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exactly, they can't do anything about it because its a 3rd party accessory, i called them and they said its a known problem but they can't do anything about it because the device on its own is fine. but i want to use a case because i dont want my phone getting scratched etc...
Use a case that does not cause this problem?
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Old November 29th, 2011, 07:05 AM   #25 (permalink)
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lol so the same thread on here and xda gets the same responses. Hardly anyone has the issue, even less so when you think how many GS2s have been sold worldwide. I hardly think this is a major issue with the phone.
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Old November 29th, 2011, 07:29 AM   #26 (permalink)
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It's a major issue with the CaseMate Tough Case, not the GS2, due to CM not accounting for the slim profile of the device.
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Old November 29th, 2011, 07:31 AM   #27 (permalink)
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Otter Box case - no problem.
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Old November 29th, 2011, 07:40 AM   #28 (permalink)
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ive seen this problem posted a few times before, always case-mate involved...
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Old November 29th, 2011, 07:46 PM   #29 (permalink)
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No call quality issues using a CaseMate Barely There. It's a design flaw in the Tough Case, plan and simple.
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Old November 29th, 2011, 09:36 PM   #30 (permalink)
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I have the case mate tough case and no issues whatsoever
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Old November 30th, 2011, 11:34 AM   #31 (permalink)
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I solved the problem by placing a peice of tape over the small pin sized hole next to the headphone jack. I have not had a single issue since doing that...
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Old November 30th, 2011, 07:02 PM   #32 (permalink)
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Not had any echo issues with mine, don't use a case but instead use a pouch. Therefore the phone and screen are completely protected but when you want to use the phone just take it out of the pouch, takes 1 second and the phone is usable in all its naked glory (how it was meant to be).
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Old December 11th, 2011, 07:07 AM   #33 (permalink)
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I have the same issue, any help/support?
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Old December 11th, 2011, 07:45 AM   #34 (permalink)
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Quote:
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any help/support?
Yes, remove the case, change to another type, or tape over the sound-cancelling mic on the top edge.
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Old December 13th, 2011, 06:15 PM   #35 (permalink)
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More likely a phone problem than a case problem (if you have the required mic holes)
http://androidforums.com/samsung-gal...ml#post3000051
http://androidforums.com/samsung-gal...ml#post3269199
[A] About the Echo and Digital Noise Reduction/Cancellation Problems - xda-developers
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Old December 13th, 2011, 06:24 PM   #36 (permalink)
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That's weird. I use the casemate the more bulkier one (not the barely there one) and I've had no issues with it.
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Old December 13th, 2011, 09:43 PM   #37 (permalink)
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I also have this echo problem, and it is driving me mad. I can't seem to open your first two links. Could you repost them please?
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Old December 14th, 2011, 01:54 AM   #38 (permalink)
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Quote:
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I also have this echo problem, and it is driving me mad. I can't seem to open your first two links. Could you repost them please?
Sorry for bad links. They're linked in the xda-developers thread which seems to be the most elaborate and links to many others too. One here:
Voice echo. Anyone else getting this?
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Old January 12th, 2012, 08:27 PM   #39 (permalink)
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The problem is resolved by activating speaker phone. This means that with a protective case allows outgoing sound to bounce off the sides of the speaker hole and the palm of your hand to create a echo effect for the person on the other end of the call. They hear their voice echo. You need to be an acoustics specialist to figure the exact dynamics of this phenomena but the solution, however is simple.
I haven’t tried it but opening the hole wider with a Stanley knife and possibly tapering it in should resolve the issue
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Old January 13th, 2012, 04:38 PM   #40 (permalink)
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The only real reason for this annoying echo on the Samsung Galaxy S2 is acoustical feedback from the speaker near your ear to the 2nd mic (default activated for noise reduction!). The time lag between for the sound to travel two times to the GSM pole and back is some hundreds of msec, so a 'nice' and clear echo is the result. I succesfully applied a perfect solution presenten by Toxicdust on the XDA forum, which can be found here: Permanently Fix SGS2 Echo and Digital Noise Reduction/Cancellation Problems - xda-developers
It takes 10 minutes and some technical guts, but then your problem most likely is solved forever!
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Old January 22nd, 2012, 12:40 PM   #41 (permalink)
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THE OBVIOUS DISCLAIMER!!! If you take your phone apart an break it, dont bitch to me As with most things, if YOUR not confidant, take to someone who IS. That being said best o' British to you!

Ah, it seems I cant post the links I wanted to but I'll try to explain.(look on .fourumxda. If your desperate)
Brand new, 5 day old BYGTI, GS2 and I had the echo. I should stress that I didn't get an echo the other person did but I suffered with their voice fading in and out. Some research on T'net and I found not only this board but many many others. It seems to be pot luck as to who assembled your phone.
What worked for me:-
I looked at the bottom mic hole and could see the light grey/white rubber surround, obvs no good. I removed the 7 small screws, carefully split the case. Then I gently redrilled the top AND bottom mic holes, just cos I was in there
Then I carefully JUST trimmed the rubber surround so that it fitted properly into the slot. Reassemble, checking that the rubber surround wasnt blocking either mic hole and test.
Woohoo! Success! I rang the person who complained the most and he thought I was on a different phone! He even mentioned that my voice was clearer and there was no echo at all.

Oh and forgot to say thats NO ECHO even with the case on
I hope this helps someone else in some way.

PS If someone wants to post the links for me, I still got them
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Old January 25th, 2012, 09:33 PM   #42 (permalink)
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Thumbs up Galaxy S2 call echo...fixed

I did a little digging around and after having read on all these forums, talking to Rogers and Samsung, it all came down to "noise suppression". Noise suppression is on by default and, from what I've been gathering, you can only turn it off when you are in a call by hitting menu and noise suppression off....wrong!!!
If you go into settings>call>additional settings, you will see noise suppression checked on. just hit that and the green checkmark will go away and BINGO....case on....case off....no more echo for your friends when they call you....works for me.
What I don't understand is that the Rogers tech didn't know this...he thought you could only turn off noise suppression when in a call. Same result with the Samsung guy. Why don't these people know this?
i am turning off my phone as we speak to see if it goes back to suppression on when I reboot....gimme a minute.......
Rebooting now.....back to settings.....call...additional settings....noise suppression is still off....SUCCESS !!!!

WOO HOO HOO !!!
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Old January 26th, 2012, 12:10 AM   #43 (permalink)
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Quote:
Originally Posted by dosboss57 View Post
I did a little digging around and after having read on all these forums, talking to Rogers and Samsung, it all came down to "noise suppression". Noise suppression is on by default and, from what I've been gathering, you can only turn it off when you are in a call by hitting menu and noise suppression off....wrong!!!
If you go into settings>call>additional settings, you will see noise suppression checked on. just hit that and the green checkmark will go away and BINGO....case on....case off....no more echo for your friends when they call you....works for me.
What I don't understand is that the Rogers tech didn't know this...he thought you could only turn off noise suppression when in a call. Same result with the Samsung guy. Why don't these people know this?
i am turning off my phone as we speak to see if it goes back to suppression on when I reboot....gimme a minute.......
Rebooting now.....back to settings.....call...additional settings....noise suppression is still off....SUCCESS !!!!

WOO HOO HOO !!!

Is anyone else seeing this setting because I don't have it. The additional settings is just for call waiting, call forwarding, etc...
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Old February 28th, 2012, 07:52 AM   #44 (permalink)
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Default Update from samsung - admits known echo problem

Having received 2 Galaxy S2's this week (one for my partner, one for me) both have the echo problem. After talking to a helpful T Mobile support member, I spoke directly to Samsung. As a consequence, I have just finished a long and detailed call with Samsung. The following are direct quotes, made contemporaneously during a conversation with Samsung support regarding the echo problem.

I was informed by the Samsung staff member, “This is a known problem.” When asked what Samsung intends to do about it, this received the following response, "We are still investigating the problem but doesn’t work with any case.”

When pushed further I received the following statement “until we develop a case that works with the phone there is nothing we can do about.”

I naturally argued that, by definition, this was a phone fault. I return to the quote above., "This is a known problem".

Call was logged at 1320hrs today , I also have a reference number.

I have suggested a firmware settings update allowing the noise reduction system to be user switched off permanently This, as reported by others and tested by me, will eliminate the symptoms (although the technology problem will still exist).

Does this technically mean that the phone is not fit for purpose,I feel so.

If we want to get this addressed, please Samsung Phone Support on 0330 726 7864 I am told that his number is a standard rate call.

Please feel free to qote me in any press.
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Old March 15th, 2012, 11:49 PM   #45 (permalink)
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Ok so I have picked up my Samsung galaxy s2 from Telstra harbourtown with samsungs quality assurance print out saying that the mic has been reset and it has passed all tests with flying colours, blow me down I put my cover on and make two calls and receivers are complaining on muffled/ echos on their end... I took back the phone 16 hours after picking up the so called fixed phone. Telstra harbourtown is sending it back again, funny thing is no one has thought about foregoing the monthly handset charge that I am paying.
This is absolutely ridiculous and is a very bad PR issue for Samsung one would presume. I will you all updated with the second round of Samsung repairs.
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The Galaxy S2 (sometimes known as the Galaxy S II) is the follow up to Samsung's widely successful Galaxy S lineup. This time, the Galaxy S2 raises all the stakes and Samsung has found a way to double almost every spec in a true, one of a kind ... Read More

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