11-08-2016 10:16 AM
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  1. Mercury81's Avatar
    I've had my EvoLTE for almost a month now. Already on my 3rd one. First one the kickstand fell off, second one the screen magically cracked before my eyes, and now this 3rd one has this issue.

    Put the phone in the Sprint car dock, plug in jack, and get this random screechy-scratchy noise that essentially ruins any music playback. Phone volume through speakers licks balls too.

    Pulled phone out of car dock, but left jack plugged in, and noise instantly stops.

    Add this to the list of wrong with this phone. Should've stuck with my OG.
    Did you try another plug...?

    sent from EVO4GLTE
    07-15-2012 09:56 AM
  2. groundshock's Avatar
    It's only audible when charging and plugged into the AUX jack. On different chargers and stereos.

    Unplug the charger, noise stops. AC charger, car charger, don't matter.

    Makes listening to music from the car dock unbearable.
    07-17-2012 08:42 PM
  3. Corysm's Avatar
    It's the road noise interference. Common problem with aftermarket stereo systems. They make noise filters for aftermarket systems but not for this application.

    Sent from my EVO using Android Central Forums
    07-18-2012 06:02 PM
  4. Saneless's Avatar
    I have the same issue with this phone.

    And I said "This phone" because I've used an iPhone, Nexus One, EVO 4G, Nexus S, and EVO 3D in this exact same car, exact same cables, and the LTE is the only phone that has this problem.
    07-18-2012 06:26 PM
  5. FaisDogg's Avatar
    I've had my EvoLTE for almost a month now. Already on my 3rd one. First one the kickstand fell off, second one the screen magically cracked before my eyes, and now this 3rd one has this issue.

    Put the phone in the Sprint car dock, plug in jack, and get this random screechy-scratchy noise that essentially ruins any music playback. Phone volume through speakers licks balls too.

    Pulled phone out of car dock, but left jack plugged in, and noise instantly stops.

    Add this to the list of wrong with this phone. Should've stuck with my OG.
    It's an issue with your car, buy an adapter called ground wire isolator and add it behind your car stereo,you will be golden for life or simply buy an aux cable with built in ground isolation...its not the phone...does the noise get louder as you accelerate?

    Sent from EVO 4G LTE
    07-18-2012 08:39 PM
  6. jocatman's Avatar
    Okay, after more research, it is definitely a ground issue and it is an issue with many different kinds of phones. While I suspect it is the case design of the LTE with the metal trim, THERE IS A SOLUTION

    I purchased and just tested the Kensington Noise Reducing AUX Audio Cable and it did as most others on Amazon said it does... it kills the problem. It can be had for as little as $13. It has 4 1/2 out of 5 stars with 150 reviews, mine soon to be added. So I hope anyone else coming to this board will have an easy time fixing their problem going forward.

    Cheers,

    Cat
    Mercury81 likes this.
    07-19-2012 05:59 PM
  7. M_RobStabsALot's Avatar
    I have the same problem in my truck, it started when I plugged my XM radio and started using that. I looked this problem up on other forums and I think this will help you nicely:
    How to Get Rid of Hissing/Buzzing Sound Caused By Ground Loop in Your Car Stereo?
    12-30-2012 12:02 PM
  8. Michael S1's Avatar
    Had the same problem with my Galaxy Note. The "Aux Noise Filter" app solved the issue for me:
    https://play.google.com/store/apps/d...uxnoisereducer
    05-22-2013 08:43 AM
  9. nationalicon's Avatar
    Here's a free app that works well for this issue:
    https://play.google.com/store/apps/d...5jZXNoaWVsZCJd
    07-25-2013 12:45 AM
  10. Bassbiker's Avatar
    I've been using the "ENERCELL" car power adapter from Radio Shack and it has eliminated all road noise. Looks like it's p/n: 2730696 and runs $19.99 at the Shack. I have 2 of them with one for my motorcycle and one in my truck and have had no issues with road noise.
    07-25-2013 12:41 PM
  11. bugmenotyoutards's Avatar
    OKAY GUYS, here's what's going on.

    Your car has a "ground" (in electrical terms), and when your phone is charging, the charger, or your phone's battery, or whatever, also has a "ground". Usually, ground is supposed to be the same, but in truth, it isn't always, and that causes a ground loop Ground loop (electricity) - Wikipedia, the free encyclopedia -- what this means is that if you have your phone output to the car, then there are two electrical "grounds" which are supposed to be the same (and if it was the same voltage, it'd be silent and not cause buzz). But instead, when it's plugged into the car, there is a ground loop, which then makes electricity flow, which makes the static buzz. A ground loop isolator will solve this and remove the buzz, so I'd really recommend that.

    YOUR PHONE IS NOT DEFECTIVE, this buzz is totally normal with GSM/EDGE/LTE, but shouldn't happen with 3G/HSPA/CMDA because of the technology. The cell radio turns on and off at ~800Hz, which is audible. It is not because of the cell phone frequency (which is 700-1900 MHz, which is wayyyyy too high frequency to hear). A shielded cable won't fix the issue and there's nothing wrong with your car, or the phone, or anything else.

    In short, get a ground loop isolator, or the kensington noise reducing cable like this on amazon Amazon.com: Kensington Noise Reducing Car Audio AUX Cable for MP3 or SmartPhone, including iPhone 4S: MP3 Players & Accessories

    -Geobio
    08-04-2013 03:01 AM
  12. crisr's Avatar
    OKAY GUYS, here's what's going on.

    Your car has a "ground" (in electrical terms), and when your phone is charging, the charger, or your phone's battery, or whatever, also has a "ground". Usually, ground is supposed to be the same, but in truth, it isn't always, and that causes a ground loop Ground loop (electricity) - Wikipedia, the free encyclopedia

    YOUR PHONE IS NOT DEFECTIVE, this buzz is totally normal with GSM/EDGE/LTE, but shouldn't happen with 3G/HSPA/CMDA because of the technology. The cell radio turns on and off at ~800Hz, which is audible. It is not because of the cell phone frequency (which is 700-1900 MHz, which is wayyyyy too high frequency to hear). A shielded cable won't fix the issue and there's nothing wrong with your car, or the phone, or anything else.
    -Geobio
    How does the shielded/grounded AUX cable address the chirping BETWEEN songs? I understand if there is a continuous buzz or hiss, but something in the phones software is allowing or causing a distinct chirping sound pulsing at about 1.5 Hz for the last few seconds of a song until after the first few seconds of the next song. If there is a ground problem, then why doesn't this chirp exist continuously?

    I think a constant hissing or whining is a ground loop problem, and the intermittent chirping is a software issue. Two distinct and separate issues. Thoughts?
    08-04-2013 12:45 PM
  13. Cadenz's Avatar
    Crisr is right, it's 2 separate and legitimate problems. I had the ground loop problem on my old EVO which was fixed with the forementioned ground loop aux wire. But the chirping squeak in between songs that the op mentions is a separate problem. I have this problem in my LTE EVO when I use headphones and not charging.
    08-04-2013 04:42 PM
  14. JERICHO_RAIN's Avatar
    Crisr is right, it's 2 separate and legitimate problems. I had the ground loop problem on my old EVO which was fixed with the forementioned ground loop aux wire. But the chirping squeak in between songs that the op mentions is a separate problem. I have this problem in my LTE EVO when I use headphones and not charging.
    I had the same problem. It's a simple issue. I had the interference from the car, the AC, etc. It was because I had one of those cheap car USB cig lighter plugs that you find at the checkout. After a few months I went and spent $25 on a quality one from staples, I think the brand is scoche anyway...problem solved. The cheaper USB plugs are crap and the higher quality plugs and car adapters make the difference. The cords don't really matter.

    So when you hear different things interfering with the audio it's just electronics from your car affecting it and depending on what your phone's drive is doing it changes the sound of interference. Hope this helps someone.
    05-09-2016 04:08 PM
  15. Jasonklim27's Avatar
    I second what Paredes says. When I hook up my EVO 4G LTE to the auxiliary port in my car, it makes a weird fuzzy sound between songs. Car speakers/aux jack/aux cable are all fine. I think it may be a problem with the phone itself
    This is not a phone issue, it has to do with how the electrical system in your car is wired up.(unless it does this without your phone charger being plugged in, then it's a phone issue)

    To fix this you can use a diode on your ground wire that runs to your cigarrete/12vdc port. This will allow phone to ground but will not let alternater/battery feedback come back through
    06-21-2016 05:38 PM
  16. Jasonklim27's Avatar
    Buy a ground loop isolator from Radio Shack. Should run you about $20 or so. That fixed my problem on my Epic.
    That will work as well,but cheaper that that is just a diode on you dc power port
    06-21-2016 05:41 PM
  17. Kenny Melgar's Avatar
    Did the bluetooth receiver help resolve this?
    11-08-2016 10:13 AM
  18. Kenny Melgar's Avatar
    Did the bluetooth music adapter help?
    11-08-2016 10:16 AM
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