iPhone Interference Buzzing Sounds in Car Stereo?

Discussion in 'iPhone Accessories' started by MBHockey, Jul 1, 2007.

  1. MBHockey macrumors 68040


    Oct 4, 2003
    New York
    I got the Belkin adaptor so I can hook my iPhone into the AUX port of my head unit in my 2001 VW Jetta, but i can here very audible interference noises coming through my stereo when i do this. Anyone else experiencing this?

    The speakers are stock (Monsoon?), the head unit isn't (installed by Circuit City).

    Hmm, maybe i'll try turning off WiFi and seeing if that helps. But i noticed GSM phones do this with any kind of speakers -- making the interference noise. My girlfriend's phone set down next to my computer speakers would always do it (my old phone was Verizon, so this never happend.)

    Any tips?
  2. Kev1000000 macrumors member

    Jul 1, 2007
    Mine goes crazy on my computer speakers. Its really, really annoying.

    My GSM Treo never did this.
  3. G5Unit macrumors 68020


    Apr 3, 2005
    I'm calling the cops
  4. MBHockey thread starter macrumors 68040


    Oct 4, 2003
    New York
    Then i won't receive calls, texts, emails, etc..
  5. TydalForce macrumors newbie

    Jun 29, 2003
    Philly, PA
    My Treo did this all the time. Mostly at work, of course. Haven't been to work with my iPhone yet so I can't compare...
  6. sunday888 macrumors member

    Jun 30, 2007
    Silicon Valley
    GSM phones have a distinctive interference sound when an inbound or outbound call happens and they're close to computer speakers. My Moto PEBL used to exhibit the same kind of interference over my "Transpod" iPod FM adapter for the car. The iPhone works in the Transpod (although it's a sloppy fit), but every so often, there's a very loud GSM interference over the car speakers.

    According to an Apple Store person, the iPhone makes connections all by itself for various reasons. He wasn't clear why. Thus the interference when no calls are apparently inbound or outbound.
  7. Dermot81 macrumors member

    Jun 10, 2007
    blackberries do this all the time. After a while you just get used to the sound
  8. brasscat macrumors 6502


    Jun 9, 2007
    Dallas, Texas
    I've noticed this buzzing as well. It'll occur anytime the ATT network is accessed: checking e-mail (on Edge), syncing time, etc. It's annoying, interferes with my sister's computer speakers (not a Mac) and my car stereo.
  9. QuarterSwede macrumors G3


    Oct 1, 2005
    Colorado Springs, CO
    This will happen with almost any GSM phone. I've had two Sony Ericsson phones that do this and have heard countless other people's do this as well. It will occur anytime the phone talks to the network when the phone is within a certain range of any type of powered speaker (some are more sensitive than others). It doesn't surprise me that the iPhone does it as well. GSM must be near the same frequency range as most speaker electronics.
  10. Diode macrumors 68020


    Apr 15, 2004
    Washington DC
    Without going into much detail .... the way GSM works is the phone checks in with the tower at a set interval to see if the tower has any calls waiting to be sent. This helps conserver battery power as the most power hungry device in the phone (the transmitter) isn't always powered on.

    When the tower alerts the phone during one of these "check-ins" the phone connects and the call goes through.
  11. Cybergypsy macrumors 68040


    May 16, 2006
    Central Florida!
  12. MBHockey thread starter macrumors 68040


    Oct 4, 2003
    New York
    Hey all, thanks for the responses -- very insightful. So I went out to my car just now, plugged in the iPod to the auxiliary port, and played some songs. I couldn't get the interference to come back. I turned off wifi, forcing it to use edge, and still no interference. I don't know!

    Maybe it only happens when browsing sites in Safari. I used it for about 3 minutes on Wifi (iPod playing) and then another three minutes on EDGE (iPod playing again) and it wouldn't interfere. I tried moving it all around to see if there was a "sweet spot" but i came up empty. I'll be more aware next time it happens.
  13. PMG4 macrumors newbie

    Jul 13, 2007
  14. jwa276 macrumors regular


    Aug 7, 2005
    Los Angeles, CA
    I think it might be bogus... Sometimes the interference is happening directly to the speakers and not just the audio output cable...

    It seems to me, the only thing that will work to kill the interference is build a farraday cage around all of your speakers/connections (kinda ridiculous though).
  15. heldtbt macrumors newbie

    Aug 30, 2007
    this is not a bogus product, it's just not meant for GSM interference. it's for when there are ground problems or no ground at all in an audio system. I think people use them in cars a lot as well to eliminate buzz.
  16. martinmartin macrumors 6502

    Jun 5, 2007
    I'm used to this sound.

    I had nextel 5 years ago or so and my phone did this - I called customer service and this was their response:

    "Your phone is making that noise because it's so powerful"
  17. Fuchal macrumors 68020

    Sep 30, 2003
    There isn't much you can do other than buying speakers with more shielding (on the amp), or moving the phone further away from the speakers. Also, the position + rotation of the phone in relation to the speaker amp also makes a huge difference.
  18. oseary macrumors member

    Sep 12, 2007
    Columbia, MO
    I used the iCarplay Wireless by Monster for my iPod mini, with no audio interference, and I assumed it'd work with my iPhone.

    On friday, I plugged it in, and was prompted to turn it to airplane mode, I told the phone "no," and received NO interference, static, nothin. When I made a call, the phone auto-paused the music, just as it was supposed to. Emails and texts come through without issue as well.

    Today was my third day of testing it on my way to work, all without issue.

    It even charges the phone too. :D
  19. Littlebit macrumors member

    Jul 10, 2007
    Yeah, it causes the same noise with both my card (Ford) as well as my hubby's (Subaru). I'm good at ignoring it, my hubby not so much so when he's in the car, we use an old iPod for music :D.
  20. spotwalker macrumors newbie

    Sep 16, 2008
    I'm very close to a solution. Finally!

    I've had this problem sense day one. I can't tell you how many products I've purchased, trying to find a way around this problem. I've noticed that the feedback would be it's strongest when I would use my fm transmitter. So bad with some that they were pretty much useless to me. A better alternative was using a modified tape deck adapter. But the problem with that was I had to put it in just the right place. I'm sure I amused many fellow motorist driving next to me wondering what the heck I was doing, slowly waving my iphone around in all directions, as if it were some kind of metal detector, just to find a good spot to set the phone down. I liked using the headphone jack output to connect to my car because it doubled as a nice hands free, when a call came in. I did find that when i used an ipod cigar lighter dock/charger I got no buzzing, But again was not able to talk hands free. So now, a year and change latter, I think i finally got it. I've been working on this film that acts like a sponge for this GSM feedback. It's a kind of alkaline earth salt resin fused into an adhesive polyurethane film. You simply stick it on the back of the phone and the buzz in gone. even with those touchy fm transmitters. As of this date the only problem I have experienced is a slight loss of signal, but I think it's just a matter of working out the right amount of resin to plastic film. If anyone is interested in doing some field testing for me I may be able to send a prototype. Any how, wish me luck.
  21. DigMe macrumors 6502

    Sep 9, 2008
    I hate that interference too. Really drives me crazy when someone is talking on a wireless mic and it goes off or when someone leaves their phone next to speakers etc... One thing I have noticed though is that for me this interference hasn't been nearly as bad for the iPhone as some other GSM phones. I never get it in my car, I don't get it when the phone is next to my computer speakers. The only time I've gotten it is on my parents cordless phone. Our cordless phone doesn't seem to be affected.
  22. papiti macrumors regular


    May 28, 2008
    Puerto Rico
    Get a sound filter for the cable that goes from iPhone to Aux. That should do the trick.:):apple:
  23. kicko macrumors 65816

    Aug 26, 2008
    I hate that too, i work with phone support everyday and everytime it happens the other person says "huh what, you there? wow we have a bad connection, is that me or is that you?" Seriously every single time.

    I feel like saying "chillout you dope it's just a cell phone" :rolleyes:
  24. mabittin macrumors newbie

    Aug 19, 2008
    Easy fix

    don't use the ground loop isolator......put a "ferrite core choke" on the wire leading into your radio (furthest from the phone) - you can get clip-on one at radio shack for ~$5 (which is still a ripoff) - wrap the wire through it a few times and then snap it closed. I have my phone driving an FM transmitter in my car and was getting miserable static from the EDGE network - due to my cable situation, I had to use two of these, one on the left chanel and one on the right just in front of the transmitter....worked absolute wonders for me - haven't heard the interference since....if you have lots of dead electronics laying around, you often see these ferrites on power cords leading into the piece of equipment (bump on the power cord) - just cut the cord and pull it out and put your wire though instead - I haven't tried recycled ones, but it should work - good luck

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