Mic not working on calls but working on viber, voxer etc. Ideas?

i think the problem is with the noise cancelling microphone located near the headphone jack and the IC chip that controls it, you can bypass this by going into SETTINGS-GENERAL-ACCESABILTY and turning hearing aid mode on. give it a try and see if that helps

Replace the dock connector. It is the bottom microphone that is supposed to work on calls and the top mic works on apps. The issue is definetely with the bottom mic. The mesh on the bottom of the phone may be clogged. I had one come in recently with the same issue. I replaced the mesh in the bottom of the phone because it was clogged completely up. I did not even replace the mic just cleaned it up and replaced the mesh. Make sure the mic is plugged back in the bottom of the phone. Static is an indication of a bad connection. Like my Daddy always told me just because you did it doesn't mean you did it right.

had the same prob, people couldnt hear me, but i can hear them, but when using viber... the mic works just fine- i changed the mic, it worked for 2 days then the prob came back, the guy workin on my iphone said its because of the 'microphone crystal' chip, so we replaced it and it works just fine. am not sure if this is the correct name but the guy showed it to me, it is not included in the microphone, it is a small chip (almost 1mm each side) located in the middle, try to replace it though its a bit hard to find one. it costed me 27 $

I've seen this issue too many times. Very common problem with the iPhone 4. There's a chip that needs to be resoldered.

I had the same problem for about a month until today, May 24, 2013.

I called up my cellular provider and explained the problem to them. They 'refreshed my SIM' and within 6 hours, the problem was solved.

God bless you.

How to resolve the above mentioned issue

STEPS

1. Reset your i-phone (Setting -> General ->Reset ->Reset All Setting)

2. Switch OFF your i-phone

3. Switch ON your i-phone

Hello, i have a problem with my microfone in my laptop, in my calls with skype they can hear me but in viber and in Cisco webex meetings. The laptop is new and i have checked all the settings.

Does anyone know how to guide me to fix it?

Thank you in advance!