I can't hear the caller during a phone call.

I'm on the same boat...

Have you tried some of these things http://support.apple.com/kb/TS2802?

In particular this might help you http://support.apple.com/kb/TS1630

One-way audio issue? Since the speakerphone does work, it may be a hardware issue rather than what would fix it with a reset. I would still try to reset first. Holding the home button and power button at the same time will reset without removing your info on the phone. But it might be an issue with calls, which in that case I would contact your carrier.

Turnin off and back on didn't work.

Reset didn't work.

try turning off bluetooth

After trying everything I gave up.

But just 5 minutes ago... I dropped by phone on the floor, not from high, just sitting on my chair at my pc desk...

And someone just called and i can hear them!!!

So...

for me, i guess it was really a piece inside that wasn't making a good connection and well...

I accidentally fixed it...

But I wouldn't reccomend you to drop it on purpose.

But maybe go to your nearest apple store, ask them to open it and see if everythin is in place inside?

cheers

Well, I tried everything else, without success, so I tapped the phone fairly firmly on a hard surface, and voila! It's working again. There is obviously something to this!!! Thanks!

Yup, the give it a sharp tap approach worked for me... but that doesn't feel like a good solution. Figuring that inevitably it will happen again, and this time I'll take it in to a genius bar to look at so they can replace it. Never happened when I had a blackberry (iPhone5 is my first iPhone) 🙂

"Tapping several times" REALLY WORKS INSTANTLY!!!!

Thank you. You saved my time and hassle.

zimz dat this is somewhat known issue.i have ip4 32gb 1 year ago with same problem.i suspect its a mic hardware issue.

i purchase another ip4 32gb last month and i did some test works great.suddenly today my callers cant hear me but i can hear them loud and clear.ill further isolate this using the unplug/replug audio jack solution or reset.

but if this happens not only to ip4 then most probably the mic used by apple is the issue here. =(

You probably solved your issue but for those who's gonna have to deal with the same thing :

Just softly push a toothpick inside the headphone jack slot. I fixed mine in 3 seconds. 🙂 good luck.

I had the same problem. I went to settings and turned off the Bluetooth and the problem has been sorted. Can hear the other person now.

I couldn't hear when I called out ad people would only get static or nothing from me when in a normal call, speakerphone and Bluetooth. I just tried wacking my phone quite hard on a rubber stool on the side of phone. It instantly started workig

Thanks so much for the suggestions to tap the phone several times. My daughter who is a new mom had this issue with her phone. Power on and off didn't work. Reset didn't work. Turning off Bluetooth didn't work. Going to verizon wireless where she purchased the phone didn't work - said they couldn't work on it and that she had to go to apple store. Went to the closest one which is over an hour from her house, and the kid at the store said he couldn't do anything for us, that we needed to call and make an appt, that it was a fact of life with the release of the new iPhones a few days ago.

So we were very happy to find this post - tapping it on it's side on a table and voila it worked.

Not thrilled with the lack of customer service at the apple store. An obviously new mother with a baby less than 4 weeks old shouldn't be stuck without a fully functioning phone, especially a phone that she bought new less than 9 months ago. But I guess once you've bought the phone you become a very low priority.