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No sound only during phone calls??

Hi!... My iPhone 4 is working fine, speakers, mic, sensor, camera, etc... is ok... when i make a call in skype everything is fine, i can hear everything and they can hear me just perfect... But the problem is when i'm making or reciving a phone call, i can't hear and they can't hear me. speaker, mic, everything is working fine in apps, itunes... record normal video, music and video playback with normal audio, ussing headphones, speaker or bluetooth is ok in apps and itunes... the problem is only with phone calls, phone audio is not working... incomming call phone rings perfect, outgoing call going well until the call is answered, no audio during phone calls, sending sms, internet, wifi, everything is ok but there is not audio during calls... Please any advice? some help please!!... Already reset all content and setings, latest version of iOS 4.3.3, phone is restored but the problem remains!!!... HELP ME PLEASE!!!!

iPhone 4, iOS 4.3.2

Posted on May 23, 2011 3:09 PM

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Posted on May 31, 2011 2:44 PM

I have had the exact same problem for quite some time. everything works besides from sound and mic when making phone calls. Have tried al tricks in the book that I could find but still no improvement.

73 replies

Apr 26, 2014 1:02 PM in response to edmundona

My iPhone 4 had no sound or mic during phone calls, but facetime/skype/voice recorder/... all worked fine.

Tried restore with and without backup, updated to 7.1.1 which was just released, then I tried some of the cardboard placements and adjusting a screw near the camera, but nothing fixed it.

I have however managed to resolve my problem, so I thought I'd share it here.


I found this video which helped me:

https://www.youtube.com/watch?v=prSZ9yJnofY


Taking out the logic board itself is explained here:

http://www.ifixit.com/Guide/iPhone+4+Logic+Board+Replacement/3143



I cut an approximately 3x3 mm square from a credit card and plcaed on top of the chip, after reassembling everything I could call again after a week of not being able to.

I was apprehensive about it at first, but the only tricky bit was getting the shield off the chips and that turned out to be not too hard. Some of the screws are super tiny though, so make sure you keep track of all of them!

Jul 7, 2015 1:46 PM in response to edmundona

I had the same problem with iPhone 5c iOS 8.3. This was my friends phone. There was no dial tone when I dialed a number. I could not hear anything while on call and the person that I was calling couldn't hear me. The speaker icon was grayed out. I couldn't press it when on call. The sound was working through the speaker when playing music. When I plugged in headphones I couldn't hear anything the sound was playing through the speaker even when the headphones were plugged in. A lot of strange stuff. The only thing that fixed this problem is when I put the iPhone in the recovery mode and restored the iOS. The phone is working ok so far.

Jul 29, 2015 5:37 AM in response to edmundona

PROBLEM SOLVED (SORRY FOR MY ENGLISH, I USED GOOGLE TRANSLATE)

4 months ago , I bought an iPhone 4 ios 7.1.2 16GB priced at 60 euros , I knew not hear the loudspeaker and the microphone goes in calls , but otherwise perfectly functional applications ! We looked on the internet and stuff like methods , but did not work , I tried to downgrade to iOS 7.1.2 software to 6.1.3 did not work, until I found a video which I said that 's stupid , but not I had that try , and I said I had nothing to lose. I would put the following link : https://www.youtube.com/watch?v=IGTu-_f2XYk
but before fitting the plastic piece I used a hair dryer to heat the chip respectively , we have installed heated plastic, after which we mounted back in the phone card !, I did not expect any work by Nohow but it functioned successfully!

Aug 19, 2015 1:51 AM in response to edmundona

Same problem here on iPhone 4.

It started acting this way after falling to the floor. After various attempts at reset/hard reste etc i smacked the phone repeatedly against my thigh. After that it worked again, so thats a strong bet on hardware-issue i guess.


Not a lasting fix probably, but it allways feels great when something works again after a good wacking.

They should have this every troubleshooting manual.

No sound only during phone calls??

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