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I'm getting some recording volume, but not much. There is a lot of hiss/buzz, but the overall recording volume is probably -30db or so. I was recording table shuffleboard and you can barely hear the slidey things bump into each other.

See above post by me. The way the guy yanked out a replacement for me with no questions shows how they know this is a problem.
 
I had the same problem, went to the apple store today and they replaced it pretty quick, guy at the genius bar said it was the first time he had seen that particular problem yet......
 
I too got mine replaced at the Apple store. Genius figured that this is a hardware problem. I called before I went and was told that they were out of stock on the i4, but they did reserve a bunch for tech. support, and these ones are in black plastic boxes with no retail packaging. ::)
 
Same problem here... took it back in today, they ran a diagnostic on it, and after trying a restore that didn't fix the problem replaced it for me.

When they ran the diagnostic he had a screen that showed battery life, usage, dropped calls etc which was quite interesting. Anybody seen this before, or know if there is an available alternative to use at home?
 
Same problem here, it was working a few days ago, and now no sound when recording.

Update:
I went to Apple store this morning, and they exchanged the phone. Fast and easy.
 
So i tried to Facetime my friends who also got the iphone 4 and i could hear them but they couldnt hear me. I called my other friend who has an iphone 3g and put mine on speaker mode and he couldnt hear me. WTF is goin on!? I tried resetting it but it didnt work. HELP!

I too am having Video problems. I shot a short video that has no sound but when I tried FaceTime out, it works fine. I too thought there was a setting I may have missed, but nada. How can I shoot video with SOUND?
 
To everyone who has various miscellaneous problems with their iPhones, you're not alone. I work at an Apple Store here in Sacramento, and just today in a 6 hour time period we had over 60 iPhone 4's come in and be replaced, mainly because of manufacturing defects, and corporate (the guys at Cupertino) have even admitted to us that there is an astronomically large amounts of problems with some of these phones. So it's just best to make an appointment to come to your local Apple Store and get a replacement, cause there are no fixes to a lot of these speaker, screen, camera problems.

Narimon Kardani,
 
Yes, not alone

I have had no problems with my iphone 4 until now. My video camera mic worked fine, but after a night of shooting film for a charity event, the next day I played back the video but there was no sound. I did the power off, hard reboot, software updates and checked and rechecked everything. My regular mic works fine, so somehow the small mic at the top of the phone stopped working. I've had my phone less than a month, so I'm taking it in. Thanks for everyone here putting in their input so I at least no the problem is not something I can solve on my own.
I'm going now to get my replacement phone.
but overall, my experience is very positive regarding the phone. Video and camera is superb! I have been dropping calls, but that was fixed with a case.
 
Dang!!!

I just found out I had this problem too.

I've had problems with the speakerphone and the other person not being able to hear me.

Then I went on a trip and recorded videos, I just watched them and all no sound!!

So I just made an appointment to bring it in. Hope they just give me a replacement.
 
I had this problem too and ended up getting a replacement. The 'genius' was reticent to talk about the problem happening with others. They did a reset/restore which didn't clear things up and then pulled a new phone.

Curious bit - the phone was not in retail packaging - its hard to imagine that they have cycled very much reconditioned inventory already. Anyway the replacement seems to work fine although I learned the hard way that when you restore from your PC that any new photos taken are lost in the process.

I really wish Apple would consider a removable memory card.....
 
Arghhh!

I've had my iPhone 4 for less than two weeks, and it's already disappointing me. When I call someone, I can hear them, but they cannot hear me unless I put them on loudspeaker, the app 'talking tom' cannot pick up my voice, and voice memo's just pick up an annoying buzz sound.. BUT, video works..
Is there any way I can fix this by myself? Or will I have to take a visit to the apple store? As a very unsatisfied customer. ¬¬ :mad:
 
Is there any way I can fix this by myself?

Nope, its unlikely.

Or will I have to take a visit to the apple store?

Yup, thats what I had to do when I had the same issue. There's no Apple store in my city so had to take it to a store with a free genius appointment (Leicester, UK), which wasnt the closest. They took a look at the phone, did a test call etc and just swapped it out on the spot. I could have got it swapped out by courier, but as I was going on vacation that wasnt really an option for me.

I complained to AppleCare for the inconvenience of me having to go all the way to Leicester and they let me have a low value item from the online Apple Store as compensation.
 
Knocking can help - no kidding

I have the exact same problem and it started recently. This is a real issue with the iPhone 4 and I think it is under-reported.

Sometimes few minutes in a phone conversation the other party stops hearing me. I tested with another phone and can reproduce it most of the time. The voice memo recorder always works just fine.

By trial and error I found out that if you take the phone in one hand and hold it upside-down with the screen facing away (so that it does not turn off from the warmth of your hand) and knock it vigorously into the palm of your other hand for few second the mic starts working again. This has nothing to do with dirt in the microphone. I think it is some weird bug related to the screen turning off.
Unfortunately, in many cases it stops working again a minute or so in the conversation.

I tried talking to Apple and AT&T. I had and appointment with a technical person in one of the Apple stores, and he ran some hardware tests and told me that everything is fine. They are pointing fingers at each other and no one is seriously addressing the concern so far. I rebooted the device, updated the software, sync-ed, changed the SIM card with AT&T, etc. None of this helps, so do not waste your time.

From my experience, I suspect that it is an issue with the device itself and most likely it is a software issue.
 
I've got the same issue. But the strange thing is, that the microphone is working very well in Camera and Skype app, when used under 3G for making calls. But once I engage a normal phone call, everyone seems to have problems hearing me. And when I use the memo app I get mixed results, one time it records very well, the other time I can barely hear myself.
 
I'm having the same problem as well.

Works fine on regular calls

but speakerphone, facetime, voice memos, video recording, only records light buzz.

I did clean my phone out with one of those keyboard air cans...has anyone else done this before experiencing the problem?

I'm gonna go to the apple store and see about a replacement...
 
Having this problem now, just started all of a sudden yesterday and I've had my phone since launch. With me though, during regular calls the other person can't hear me but I can hear them, but somehow Voice Memos and recording video both work (meaning both mics seem to work.... EXCEPT when making phone calls). Anyone have any ideas before I literally drive 3 hours to my nearest Apple Store? My phone has unfortunately become too important for me to ship away and be without for a week.
 
iphone4 speaker problem

my speaker phone just quit working about an hour ago, it started while I was listening to something on YouTube then the sound went off, it's very frustrating. This is the 2nd iPhone4 that's given me a problem, the first one just a week after it was released had some sizzling noise when I charge it, I took it to them they found an error on hardware they didn't say what it was and replaced it right there and then hope they will fix this
 
I think there is something wrong with your hardware.
Is it under warranty? replace it for a new one as soon as possible
 
iPhone 4 speaker problem

I hope it's under warranty I just got this replacement a few weeks after it's launching but I'll go to store today luckily am 7 miles away from the store
 
Just wanted to bump this up and get some advice. I can get a normal voice recording using voice recorder or taking video, but once i switch on speaker phone during a call the person im speaking with cant hear anything / very faint even with the microphone up to my face. Will this be replaced?
 
I'm having the same issue with my wife's iPhone. I sent it back to my carrier (Claro El Salvador) and I got slapped with a big fat "unit was dropped, no warranty coverage, pay $154 deductible to replace". I'm FUMING!! I know it wasn't dropped. And the mic works in videos, other apps. can I try an Apple retail store in the US? Where people actually know something...:mad:
 
The solution is I think for most of
The iPhones with mic not work during speakerphone or video recording is check that the little pin hole on top by the headphone port is not
Clogged or blocked by something. I had this problem, looked at the hole, and it was plugged with crap. I took a needle and just cleared it out. Everything
Works again. Apple geniuses my ass.
 
Bought my iPhone 4 when they first came out, and this problem just started happening. I first thought it was an AT&T thing, but I just got a free microcell from them, and the problem was still acting up, so a search and this forum came up.

Set up an appointment at the nearest Genius Bar a few blocks from work. Walked in, stated the problem, he called me and I heard him, but he could not hear me, then he checked the hold at the top of the phone (no blockage), and asked me if I wanted the Zagg Leather backing I put on the back of the phone as he was giving me a new one. No questions, though I did mention I saw that this was a potential issue, and I was in and out of the Genius bar in under 10 minutes.

And the great thing about is was that I had dropped the phone right after I bought it, cracking the back glass. So having a defective phone meant that I got my broken glass fixed for free. I've been an Apple consumer for many a year, mostly because of the quality of their products, but also because the few times I've had problematic products they've always addressed the problem quickly.
 
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