I can hear people, but they cant hear me.

I have the same exact issue with my microphone. People can only hear me if I use bluetooth or handsfree. I went to the Genius Bar at my local Apple Store and the technician hadn't seen the issue before. All he did was try a restore and that did not fix it. He said my only option was to buy a new phone. I'm hoping that the next software update will fix the issue.

I have tried disabling 3g, I have not made many calls but so far hasn't failed.

can you prove it?

I am having the same exact problem. iOS 4.0.1 on iPhone 4. My voice record works. Genius offered to replace the phone. I declined wanting to see if restore would work... It did not. AT&T re-registered my iPhone. Still having the problem. I'm wondering if a new SIM might fix the issue. I'd prefer to NOT have to get a replacement iPhone, only after a month and get one of the refurbs, that are just... meh. I've reset network settings. Voice Record works, Skype works, Video Camera audio works... FACETIME works!!! Apple, what is going on?

I have been having the same problem too. Apple is going to replace my iphone. This is after the sim has been replaced and phone restored...twice. We'll see how it goes.

This started happening to me yesterday and I've only had the phone for 1 week 😟 I thought maybe it was an AT&T problem, but it's occurring when I call other carriers as well. When people can't hear me, I unplug my headphones and try to use the speaker phone but that won't work either!!! So frustrating!

Same problem here, but it comes and goes. Sometimes they hear me, other times they don't. The person who can't hear me sometimes is on the Cellular One network. I wonder if it's a network specific or a phone specific problem?

I'm ******. I just exchanged my new iPhone for another one because of the OS download bug (killed my first iphone). Now this...

Message was edited by: Len Anzelde

I got same problem! I used it for 2 months already and it happened just last week,

I changed network career, Upgraded S/W~ did everything what I can..

But still...

I bought from sydney, australia and now im working in Thailand.

Dont know really what do I have to do...

Thailand service center can accept my phone??

Same problem for me too. And for me too it comes and goes.
No matters if people hear me from cell line or from wired line. No voice out from the device.
Restoring the phone it works for 10mins, then it stops working.
Sent my iphone to apple twice, but they've sent it back to me saying they can't find the problem. I'm waiting for the phone to be back from apple (2nd time), then i'll call'em for the 10th time and try to make them change my faulty iphone.
it suc*s.

This thread also discuss about this issue:

http://discussions.apple.com/thread.jspa?threadID=2498579&tstart=0

I'm having EXACTLY the same problem! It is driving me crazy. AT&T replaced my sim card and I've restored the phone, but nothing is working. All that anyone knows to do is to get a new phone all together.

Having similar problem here only the other way around. The people on the other end of the phone can hear me but I get no sound at all. I can communicate if I plug in the earphones or put the caller on loud speaker. When this fault is occurring I also lose most sounds from my phone. Instead of getting an incoming message noise it only vibrates. I also lose all keypad and lock etc sounds. This problem comes and goes and is truly annoying. The phone is still under warranty but it will be an inconvenience trying to have this problem rectified. It would be interesting to know if it is a hardware problem or another problem created by the upgrade to this os system to 4.1. Either way it is a problem that Apple need to look at urgently as it appears to be fairly wide spread from my research on these boards. I suggest everyone who is having this problem also reports it via the feedback page on the apple site

Message was edited by: Shemax

I'm from Brazil and I'm having the same problem!!! =/
I can hear people perfectly but they can't hear me!

I've already turned it off and on, did a hard reset, reset and nothing works. And seems that nobody found a fix for it!

It's REALY frustrating to have a phone that can do everything but call!