iPhone 4 - No Sound, Bad Hardware?

Wow! This actually worked!

thank you, ZerotehRay! I have the Otter Box big rubber case and that part is under a flap. It was orange-red as you said and I flipped it and Voila! Saved me a trip to the Verizon Store.

Don't want to necro a thread but, I just got an iPhone 4s that I activated on my AT&T account on Friday... We also got the insurance which was offered when we activated it even though we didn't buy the iPhone from at&t. The problem is that the sound has been cutting out from time to time... I started researching and did a few of the steps... I restarted the phone, held both home and power buttons, upgraded to iOS 5.0.1 and the sound (keyboard clicks, ring tones, lock and unlock sound, etc) will sometimes work other times it will cut out... Headphones will play the sounds just fine. I discovered that plugging the power cord and unplugging it would bring the sound back sometimes. Then I found that squeezing the bottom right corner would work as described in this post.

My question is that is this behavior what we have to deal with in a phone valued over $700 (32gb black) or is there a resolution to this? I don't feel like having to handle the phone in an extremely dainty wY is acceptable... Of course you need to be careful, but trying not to touch the bottom right corner of the phone is something I don't want to have to do. Would doing an insurance exchange work? Would it be a refurbished phone? We have a hard plastic case coming, is that going to make a difference?

Thank you,

Ttl;dr - intermittent no sound issue, squeezing right corner brings it back, don't want to worry about not touching bottom right of the phone, will a hard case fix it or should I just do an insurance exchange? If exchange will it be a refurbished model?

I have the same problem... My iphone 4 was just 30 days old and my wife used headphone today and the sounds went off, but the speaker phone and headset was working fine... After googling a bit, tried randomly plugging in and plugging out the headset cable and it started working fine after 10 attempts so... Little disappointment with apple product with a solution like this. Planning on to take it to Apple store if this happens again....

it is a logic board problem, here are some guys showing how to fix it, so unless it is some headphones plug problem this issue is only fixable in a lab

https://www.youtube.com/watch?&v=C-n1LJEK3PM

Soooo, now I feel really stupid, after doing everything I could read because my volume button didn't work unless I had my headphones plugged in, I went to my music app and started scanning things. Well, I had "dock connector" selected. Once I switched it, voila, everything worked again. Tah dah!

got my new iphone 4 at 10am, noticed 5 missed calls and no sound ... 3pm booked in again - I have to wait 3 days for a Genius appointment for a non genius issue of NO SOUND.

This worked for my iphone 4s new out of the box. I just did the press trick and now i got sound for my speakers!

I have the same problem but I've plugged and unplugged the headphones and when I press the volume buttons it still says headphones when they're not plugged in! This just happened out of nowhere and I don't know why everything was working fine with the phone yesterday! Somebody help

I had the same problem of no sound; the volume buttons not functioning no volume controls not appearing (through the touch screan/settings) as well as the internal speaker not working. When I plugged headphones in however everything worked fine. (I have had my phone 4 for about a year and a half).

I did a bit of digging... And here is what I have concluded.

Many people think this is a headphoned because it seams to fix the problem but the issue stems from the charger connection port. There is a hierarchy - normal audio controls are overridden by the dock connection audio settings which are overridden by the headphone jack.

I noticed there was some dirt in the dock connector an some of the connection pins were fouled, I took a cocktail stick and lightly scaped the dirt away (do not use anything metal) this solved the issue straight away - the phone 'thought' it was connected to audio through the dock.

Hopefully I have explained this ok and it will help some of you with older phones (not sure what's going on with the new phones but all the same make sure there is nothing in the connector slot). You can buy dust covers online or in phoe repare shops which should stop the problem.

Please comment if this solution has worked for you.

This may sound silly but i experienced exactly the same issue, also with an iphone 4; the solution i found resolved the issue instantly ...i grabbed a small pin and the the dragged the dust / fluff lodged inside the main connection socket out, careful not to do any damage by scratching the contacts/connectors. The ring tone was never an issue but instantly my txt tone, keyboard clicks, music (from iph speaker), app sounds, lock screen sound, and even the beep you get when you connect power socket - all these returned and now work again 🙂

Obviously if your iphone is new this is most likely not going to help you, sorry.

Hope this works for someone out there! Good luck.

OK, I had the same problem with my wife's iPhone 4s. I found this trhead, but did not read all of the posts, but I have found my solution! 🙂

I played an mp3 and could hear nothing,...but I did notice a dropdown list in the right corner when looking at the mp3 cover art. The choices were basically iPhone, bluetooth and cancel. In my case, bluetooth was selected..I changed to iPhone and I COULD HEAR!!!!! 😝

Thank you mc_sharman! Your instructions were exactly what I needed to get my sound back. All I had was a dirty dock connecter. Blew it out (took me back to my old NES and N64 days, lol) and now it works fine. Thanks!!

IVE FOUND THE SOLUTION!! This has been a problem for me for a while now!!

Anyhow.... Alot of replies on here said the make sure the headphone duct was clear of any dust or obstacles; HOWEVER, i found that aswell as that, i needed to clear the charger duct. Im not sure if there was dust in there too, but i found that blowing quite hard into the charger duct solved my problem. I tried many ways i saw on here, but found that the sound kept flicking on an off everytime i attached my charger. I blew into the duct to clear it and... WOL LAHHHH!!! Problem solved! I did also update my phone which apparently fixes any bugs, so hopefully i will not have this problem again!!

HOPE THIS HELPS GUYS! Let me kno :0)

As weird as that solution sounded, what you said worked. Kudos!