iPhone 4 - No Sound, Bad Hardware?

Hello everybody,
I'm from Taiwan and I met the same problem with you guys.
My sister bought me an Iphone4 16G from Canada as a New year gift and I received it couple days ago. After setting all function and programs up I suddenly found that my Iphone has no sound at all from speaker. I can only hear voice from headphone! I'd searched for help from couple of our local Apple stores but the only answer I got was - Apple only provide regional warranty, you have to return it to where you bought. My god, it means I have to send it back to my sister in US and then ask her to return it to Canada! How much freight and time will it be wasted? I'm totally disappointed cause this is my first time try on an Iphone and I think a global company such as "APPLE" should not make such a serious quality issue like this ....a low level mistake just like an expensive audio makes NO SOUND or a famous brand TV which makes NO IMAGE !

try blowing canned compressed air into headphone socket it may have a foreign body making iPhone think it is in use when it is not therefore cutting out speaker

re Warranty ....should have read the small print

Message was edited by: Peter Gillespie

I have a similar problem. Mine was working great but suddenly i could no longer here anything out of the interal speakers or earpiece. No movies or music and I couldn't here or speak to anyone on the phone without using loud speaker. I soon realised when I pressed the volume button that it showed up as headphone mode even when they wernt plugged in. Tried everythng like rebooting etc and then I looked on youtube for advice and everyone says to plug and unplug the headphones several times but it didnt resolve my issue so my Iphone is currently on its way back to applecare repair and replace now!

Same problem here with Iphone 4.
Had it for a week now, it made a few crackling sounds then quiet...vibrate works, but thats it...no sound!!

Hey guys, I just wanted to point out something that is normally over looked when facing this issue, its something super silly and I know this wont solve the problem that some of you have but being that this is #1 on the google search for "no sound iPhone4" I figured that I would post what was found to be wrong with my bosses phone.

Take a look at the side of you phones, you should have your up and down voulme buttons and one switch. (see link)
http://imgs.sfgate.com/blogs/images/sfgate/techchron/2010/06/25/iphone4_buttonswitch624x371.jpg
When that switch is flipped and it shows the orange-red strip its being put into a vibrate mode, where the only sound that you will get out of the phone outside of its headset, headphones, and bluetooth is its speaker phone when turned on. Now when its flipped back and it shows grey it should work normally, all games, your iPod, and other sounds should go back to working just fine.

I hope this helps most of you!
~Ray

Thanks. I know you mean well, but I should think all of us tried that first..... and rebooting, and unplugging and replugging the headphones. Mine started when I used the headphones and then paused the song and unplugged the earphones. It is SO frustrating. You would think APPLE would come up with a solution to such a widespread problem. I am now going to try plugging in to iTunes on the laptop, see if that does anything.........I doubt it but you never know......

I just did a system restore on iTunes and I STILL have the same problem! grrrr!

I have the same problem. Tried RESTORING it thru itunes, worked fine for a few hours then again there was no sound coming from the speakers. The sound just comes in then out. Just got my iphone 4 two days ago.

same problem with me, I just bought for two weeks, and no sound even the silent switch has turned off.

Maybe I've a solution here. I suggest that you press in the right corner of your iphone screen(near home button). I tried that and suddenly I can hear the sound again. My friend also did this, and its worked.

Sorry if my english is bad. 🙂

Hi Guys,
I have this problem and it was fixed by hard resetting the phone then connecting to itunes and re setting to factory settings. itunes will ask you if you want to back up so don't worry you will not lose all your personal settings.

Hope this helps.

I tried a hard reset and restore and it didn't fix my problem. Went to the Apple store and they said they could replace it on the spot with another phone, but that it wouldn't be a new one. It would be a refurbished one from spare parts! I have only had this phone for 2 weeks from brand new, so I think I am within my rights to have it replaced with a new one. They said to take it up with the ombudsman. I also went to the Telstra store. They said they would repair it, which would take a week and that I couldn't have a courtesy iPhone during that time, but just an ordinary phone. They also said that if they couldn't repair it, it would be replaced with another iPhone, which, like Apple, could be refurbished, not new. Apple, Telstra, this is not good enough! The Telecommunications Industry Ombudsman (TIO) is contactable on 132200 or at www.tio.com.au If anyone else has these issues, please bring them to account!

on my third swap phone from the apple store uk,sound on this one is very faint and i really struggle to hear people but at least i have fifty percent.

Great! ZerotehRay: Thanks!

I have tried this and worked. But the sound comes and goes so I am going to take it to apple service in turkey.

fabz88 wrote:
same problem with me, I just bought for two weeks, and no sound even the silent switch has turned off.

Maybe I've a solution here. I suggest that you press in the right corner of your iphone screen(near home button). I tried that and suddenly I can hear the sound again. My friend also did this, and its worked.

Sorry if my english is bad. 🙂

This method worked for me. Not sure on a long term fix. Maybe be a loose wire.