iPhone 4S Facing Audio Issues during call - GSM-Forum

.:Tanveer.: · 11-25-2011, 19:43

[IMG]http://2.bp.********.com/-US54pmNoPLc/Ts_gCJ7ACzI/AAAAAAAABGE/kq40tdZq69U/s400/iPhone-4S-withbox.jpg[/IMG] According to multiple threads on Apple’s support forum, hundreds of iPhone 4S users are experiencing an audio echo during voice calls... Keep Reading

suzani · 11-29-2011, 20:07

this is serious issue Apple should notice it

astana2007 · 11-30-2011, 17:49

Strange thing echo hearing only via hands-free

ralph herkimer · 03-07-2013, 07:29

The issue is that the person on the other end hears an echo its a problem that most say is only on earphone conversations but this is all the time and sometimes a few min. after a call. Working on this issue for 5 hours and have done every thing I can think of updated to latest IOS Replaced lower dock flex from after market to oem known 100% Original working. Then even replaced the entire caucus from another unit and shimming the audio ic still has an echo on the other end of a call. All I can say is the upper mic is causing this issue for sure and if disabled all calls are fine so I have popped the upper fuse off the flex to disable it but now this gives us another problem! No sound on Video record so not a fix at all! My thought is the 4s mother board has a serous audio ic problem. If there is anyone out there that has seen this please help us figure this out as I will keep working as-well.

iphoneecia · 10-26-2013, 01:06

i think you have to change the two flex bro, upper and lower microfone flex, do you checked for any resistor around these flex ?

rmano2k7 · 11-04-2013, 14:58

Same problem here, i have eliminated the upper one, but still echo exists, do know what else to do, any one who has resolved can help pls !

11-25-2011, 19:43	#1 (permalink)
.:Tanveer.: Freak Poster Join Date: Nov 2005 Location: Musafir Posts: 232 Member: 195957 Status: Offline Thanks Meter: 53	iPhone 4S Facing Audio Issues during call [IMG]http://2.bp.********.com/-US54pmNoPLc/Ts_gCJ7ACzI/AAAAAAAABGE/kq40tdZq69U/s400/iPhone-4S-withbox.jpg[/IMG] According to multiple threads on Apple’s support forum, hundreds of iPhone 4S users are experiencing an audio echo during voice calls... Keep Reading

03-07-2013, 07:29	#4 (permalink)
ralph herkimer Junior Member Join Date: Mar 2013 Posts: 1 Member: 1895552 Status: Offline Thanks Meter: 0	iPhone 4S echo The issue is that the person on the other end hears an echo its a problem that most say is only on earphone conversations but this is all the time and sometimes a few min. after a call. Working on this issue for 5 hours and have done every thing I can think of updated to latest IOS Replaced lower dock flex from after market to oem known 100% Original working. Then even replaced the entire caucus from another unit and shimming the audio ic still has an echo on the other end of a call. All I can say is the upper mic is causing this issue for sure and if disabled all calls are fine so I have popped the upper fuse off the flex to disable it but now this gives us another problem! No sound on Video record so not a fix at all! My thought is the 4s mother board has a serous audio ic problem. If there is anyone out there that has seen this please help us figure this out as I will keep working as-well.

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11-29-2011, 20:07	#2 (permalink)
suzani Junior Member Join Date: Nov 2011 Posts: 9 Member: 1697884 Status: Offline Thanks Meter: 0	this is serious issue Apple should notice it

11-30-2011, 17:49	#3 (permalink)
astana2007 No Life Poster Join Date: May 2006 Location: HEAVEN Posts: 1,042 Member: 285345 Status: Offline Thanks Meter: 324	Strange thing echo hearing only via hands-free

10-26-2013, 01:06	#5 (permalink)
iphoneecia Freak Poster Join Date: May 2012 Location: Brazil Posts: 147 Member: 1759455 Status: Offline Thanks Meter: 9	i think you have to change the two flex bro, upper and lower microfone flex, do you checked for any resistor around these flex ?

11-04-2013, 14:58	#6 (permalink)
rmano2k7 Junior Member Join Date: Feb 2011 Posts: 1 Member: 1510621 Status: Offline Thanks Meter: 0	Same problem here, i have eliminated the upper one, but still echo exists, do know what else to do, any one who has resolved can help pls !