Previous 1 2 3 Next 96 Replies Latest reply: Dec 15, 2011 12:23 AM by orla.d.
ABSjazz Level 1 (0 points)

Hello all,



Received my white 4S on launch day and absolutely love it!  However, I've noticed a faint ticking/crackling type of noise coming from the earpiece when I'm on a call. It's not distortion as it stays at the same level regardless of volume.  It seems to happen when the screen is turned off by the proximity sensor.  Almost sounds like an interference of sorts.  I tried turning off wifi on both the phone and my router at home but that didn't solve the problem.  Any ideas what this could be? It does go away at times and it seems to be more pronounced when I hold the phone to my left ear oddly enough. 


I'll probably just end up bringing it to the Genius Bar when I have the chance but just wanted to see if anyone else has experienced this. 


Thanks in advance.

  • Cornish Massive Level 1 (0 points)

    yep.. i'm on my second white iphone 4S 32gig because of this.. sounds like you have exactly the same issue as me. the phone shop swapped it straight over..i went home made a call and crackle tick tick boom.same as before. never had this with my iphone3... pants.i'm pretty sure it's the phone but are you on o2?

  • Cornish Massive Level 1 (0 points)

    by the way i have figured out that the noise i have is very similar to the interference you get when a mobile phone is near a raidio or speaker you know the classic crackle... but the fact it comes out of the ear piece of the phone!!!! what have you done APPLE?

  • ABSjazz Level 1 (0 points)

    I'm on AT&T in the US.  I may end up waiting this one out until at least the first firmware/software patch.  Could be some miscalibration of an antenna or something to that effect. 


    At least a few others are experiencing this, makes me feel a bit better.  Keep us posted if anyone manages to find a fix or swaps out for a new unit that is ticking-free. 

  • Cornish Massive Level 1 (0 points)

    I think it might have something to do with Siri because when i put my ear to the phone after pressing the home button i can still here slight noise even when i'm not making a call... do you also get this.

  • Brian Sajdak Level 2 (230 points)

    I have the same thing (on ATT). It's driving me nuts!  But, I also don't appear to have a battery issue, so I'm hanging tight on it for now becasue the battery is more important and I don't want to swap it out only to end up with one where the battery drains quickly.

  • lilcookies84 Level 1 (0 points)

    I'm hearing the same faint crackle/static each time I'm on a call (Verizon) and not on a call.  It doesn't interfere with the call, but it is sure annoying.  Sounds like its coming more from the phone itself, rather than the reception since I also hear it when I put my phone to my ear when I'm not even on a call at all.  It's not as strong, but I still hear a slight transmitting/interference noise coming from the earpiece of the phone.


    Just like ABSjazz, I'm thinking of maybe waiting it out as well since Verizon told me they are sold out for now and would have to check back to see when they get new shipment. Was thinking about contacting Apple, however even then, it seems to be too risky to get a new replacement right now as it will also have a high chance of having the same issue as well.

  • robinhebert Level 1 (0 points)

    I'm thinking it could be keeping the raise to speak option with Siri...I turned that off.

  • ABSjazz Level 1 (0 points)

    And did that help? ...

  • lilcookies84 Level 1 (0 points)

    I tried turning off the "Raise to Speak" for Siri in my settings, and did not seem to help the problem for me.  Static/crackle interference still remains =(

  • Kiinks Level 1 (0 points)

    I get that also. I noticed the noise only occured while either myself or someone on the other line was talking. And when I'm silent, no crackling. So I tried turning Siri on, and the crackling started again. Not good that a number of others are having the same problem too.

  • scottch67 Level 1 (0 points)

    I also have the same issue.  I have the white 32gb on AT&T.  I get a faint staticy/crackling noise when listening through the earpiece on a call.  Agree it's mostly apparent when someone is talking.  Love the phone, but this issue is distracting. Hopefully there's a solution soon.

  • benvolio1979 Level 1 (0 points)

    I for sure have this problem, and Im glad to see that I am not going crazy!

    I believe that this sound is very similar to interference from the Processor. I know the GSM speaker interferance many are talking about, but this sound problem is being heard even on Verizon, which does not suffer from this type of speaker interference.

    I imagine it has something to do with the new processor or just a different logic board design than the old iphone 4.


    You get this same type of noise, typically on a desktop,  when you turn your computer speakers as high as you can and do some processing intensive applicatoins. This is typical with cheap onboard soundcards.

    You can usually here it also because you are AMPing up the speaker therefore bringing out all the interference in the output which you usually dont hear when turned down.


    So i believe you are hearing the crackeling not only when you are in a call but it is when the SPEAKER is activated, such as Siri, or a phone call. And also when the phone is processeing, again, such as Siri or running apps, Locatoin services...etc.


    Try putting it in airplane mode which cuts all communication to the device and you can still here this when the Earpiece speaker is active.


    This doesnt happen on the External Speaker on the bottom, just the earpiece Speaker

  • NapoleonSolo Level 1 (0 points)

    Same problem here in France ... My wife thinks i'm crazy ... so i'm glad i'm not alone !


    I think that benvolio1979 is totally right about the fact that this sound appears when the phone is processing. It is tipically an electronic noise that not only appears on calls but also on Siri, Safari (put your hear against the earpiece when loading a page and you will heard the sound) or other apps.


    So now, i don't know what to do. Don't know if it's normal or a bad batch. Because in french forums, someone asked for a replacement and his new phone has exactly the same problem ... So, I don't want to do the same because appart from that my phone is absolutely perfect.


    I think that all 4S have this issue and that few people can actually ear it. But for the rest of us, it's very annoying !


    PS Sorry for my bad english

  • Dogrob Level 1 (0 points)

    I have the same problem just in the earpiece when making calls, it's still useable but very annoying when on a call. This is my second 4s after returning the other one to the apple store and getting it replaced a couple of days ago. Hopefully its not hardware and can be solved with an update I really don't want to swap it again.

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