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squarejp Level 1 (60 points)
Anyone has Plantronics 925 with iPhone 4 and have voice quality issue with muffled sound? Any solutions?

iPhone 3GS 32GB White, iPhone 4 32GB Black, Windows 7
  • DavidWC55 Level 1 (0 points)
    I'm having issues with muffled sound when I talk using a bluetooth headset. Not just the Plantronics 925; I completely cannot use a Motorola H375, and a Jawbone Icon I just bought, I can use most of the time if I turn it on and have it connected to the phone before I make or receive a call. If I turn it on in the middle of a call, the sound quality is very muffled.

    I've noticed that there seem to be inconsistencies with which headsets work well for people and which don't. For example, I read one person that said they had problems with a couple of bluetooth headsets but that their Plantronics 925 was one headset that worked perfectly fine. So.... I don't know, but I sure hope it's fixed soon!
  • squarejp Level 1 (60 points)
    I have seen people posting problems with their Bluetooth headset sounds muffled.

    What's wrong with the "evolutionary" antenna design that costs so many problems!

    My iPhone 4 has a Gel Case on it so it shouldn't have problem for interference. Steve Jobs fix that please!
  • finniii Level 2 (340 points)
    I just bought a Plantronics 925 to go with my new iPhone 4, and the sound is excellent -The best I've ever had with a bluetooth device!
  • squarejp Level 1 (60 points)
    Try it couple times and you will encounter the muffled sound problem. It happens to me quite frequently that people can't hear my voice and I'm forced to use the Death Grip and speaker phone solutions.
  • zYxMa Level 1 (20 points)
    Funny enough. I have 925 and ip4 (and 3gs) and I have similar issues with both iPhones. And not just iPhones, I previously owned nokia n97 and had some issues as well. Nothing major, but when I call to places like customer services or other public numbers they can barely understand me (it could be partly caused by my bad accent :P) but when I need to spell something it is impossible for them to understand what I'm saying.

    However though, whenever I call my girlfriend (ip3gs) she can hear me perfectly fine with crisp sound and very loud.

    It sounds strange, but this is what happens, and not only with iPhone 4... :/ Don't know, but def nothing to do with the "antenna problem".
  • JHawkZZ Level 1 (0 points)
    Hey guys,

    We're having a discussion about this here:

    It appears this is a pretty widespread issue. I recommend contacting Apple and letting them know, so they can see this is an issue worth addressing.
  • zYxMa Level 1 (20 points)
    but this thread is specifically about Plantronics Discovery 925 ;-P) and it could not be related to the "antenna problems"
  • Richard Wessels Level 2 (240 points)
    I am using the Plantronics Discovery 975 and it is a lot louder with the new iPhone 4. There is now a better volume control that is accessible when you are in a call and using your BT headset.

    The 975 and the iPhone 4 have been a perfect combination for me.
  • S1cktruck Level 1 (0 points)
    I used this same headset on the 3gs for the lat year without one problem...also i used the headset on ios4 for the two days before the ip4 release and i had no problems at all! Now on ip4 since the 24th and i have the same issue as some here. The person i call either says they cant hear me or im very muffled? My bluetooth through my land rover is perfect....very strange? They must have changed something in the protocol? Would really NOT like to have to purchase another headset but it looks inevitable at the moment! Apples customer realtions cant even deal with a legitimate engineering oversight on the antenna let alone support infinitely various forms of bluetooth protocol..........
  • June DeLane Level 1 (0 points)
    I'm also having issues with my Plantronics 925 and iPhone 4. Sound is muffled, garbled, far away, etc. Called Apple Support, and we went through a number of things, including resetting my network settings, and then re-opening WiFi and re-pairing my headset. After all that, it sounds somewhat better. Am considering ordering the Plantronics Discovery 975 and seeing if it works better (can return to Amazon if it's about the same). Apple support didn't give me any sense of "we know this is a problem and we're working on it", it was more like "it's your headset, try a different one".
  • Captual Level 1 (0 points)
    I Have Same problem as all above posts. This seems it is Not a hardware problem. It seems it is a software problem with OS4. Spoke to head supervisor at Apple today. he went through all above posts with me to confirm that this is indeed a problem. He called me on iPhone with bluetooth and confirmed the muffle. I then called him back and he confirmed operation was normal. He claims he is consulting with powers that be to fix software. I tried four different bluetooth headsets and all had same problems with iPhone 4. Complaint is: Muffled audio on most Incomming calles, my audio normal, most Outgoing calls normal, Stereo bluetooth opeation poor range and audio quality, bluetooth pairing cuts in and out on iPhone with headset.
  • mequoniPhone Level 1 (0 points)
    I'm in the same boat with my Plantronics. Worked very well with the 3GS. Pairs fine with the iP4, but everyone says I sound like I am underwater, even if I forget and re-pair.
  • ShaneRendezvous Level 1 (0 points)
    My Plantronics 925 worked perfectly with my iPhone 1 for two years. Immediately after upgrading to iPhone 4 I've had repeated complaints about being muffled and distant. Still working on a solution.
  • ShaneRendezvous Level 1 (0 points)
    OK, I just got off the phone with Apple tech support. Are you ready for this... "Buy a new bluetooth headset." Yep, that was their recommendation. It must be the Plantronics 925 that *****. The rep went on to tell me that they only deal with bluetooth pairing. Once paired, the issue lies with the bluetooth headset manufacturers.

    Do some research, there are several brand new headsets that a reporting similar sound & connection issues with the iPhone 4. Some older headset are working fine. There's definitely some fuzzy math happening here.
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