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iphone bluetooth interference garble with Pioneer DEH-P7000BT car stereo

I use the iphone 3GS and have the Pioneer DEH-P7000BT car stereo. I have loved them both. BUT - since the 3.0 firmware update on my iphone, i am having garble interference when using my iphone with bluetooth through the DEH-P7000BT. Never had the problem before 3.0 and the 3.1.2 update has not helped.

Anyone have any advice?

Dell, Windows XP Pro

Posted on Oct 20, 2009 6:33 PM

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Posted on Oct 27, 2009 10:42 PM

Thank God I'm not crazy! I have the identical problem same stereo in car, same garbled speech on bothends of the conversation. You didn't mention it, but mine is cyclical - comes in about every 45 seconds or so, lasts from 10-25 seconds, then clear again. The connection with my first gen iPhone was crystal clear - a joy to use.

I spent an hour at my local Genius bar this weekend and am no closer to a solution, even after they swapped me for a refurbished phone. If anything it's worst. My best? Apple will have to first acknowledge there's a problem (no go on that yet) then fix it with a software update and who knows how long that will take. I

FYI I alsoemailed Pioneer to see if there is any firmware updates for the deck. I' e certainly not seen any on their site, but other than a confirmation email I haven't heard back.
93 replies

Jul 2, 2010 11:59 AM in response to ifanatic

I finally took the plunge and updated my 3GS to OS4. As others have reported the bluetooth phone calling feature on the DEH-P7000BT works flawlessly now. Good job Apple!

_Now for the EPIC FAIL part_:
OS4 introduces a bug in bluetooth streaming audio on the DEH-P7000BT. The auto-connect feature does not work and forget about attempting to manually connect as that does not work either. The steps that ifanatic provided is a good work-around for getting it going. Thanks figuring that out ifanatic. 🙂

It's going to be a PITA to go through those steps every time you get in the car (if you want to listen to music wirelessly) but at least there's a valid work-around.

...and now we wait again for Apple to release another bluetooth update for the Iphone OS. Lets hope they get it right in the next revision. lol

Jul 22, 2010 7:53 AM in response to bourgotparametric

Just to add to the discussion, I have the 9800BT. For me, the auto connect does not work either. I just got an iphone and my other phones auto-connected fine.

I was able to register the iphone 4 as documented in the manual. Once this was done, I could then just Connect phone and it connects. It takes me about 5 to 10 seconds to do this, but is a manual process.

I have seen a glitch where BT audio and a phone call got things whacked and sound would not come out of my speakers. So far, it is working ok, but it would be nice to get this working as it should.

Jul 24, 2010 11:48 AM in response to Unit AT

Unit AT (or anyone else), has anyone tested the Kenwood KDC-BT945U with the new iPhone 4 + iOS4? Are they compatible? Does the wireless music stream okay or do you need to use the USB cable? How's the BT audio for calls?

I'm interested in this head unit but I want to make sure it will work with the iPhone 4 and iOS4 before I purchase it.

Thanks.

Jul 26, 2010 12:32 AM in response to h4Him

WHERE WE STAND:
1. Iphone 4 has bluetooth Muffled sound to Incoming calling party, outgoing calls
are for most part ok. When connected, quality and range of audio is very
reduced with minimal performance. Bluetooth device drops on and off while
paired.
Trouble pairing some devices that work fine with other phones and cars. Stereo
headphone devices range, quality very reduced for various makes/models.
2. Problem appears to NOT be any single make/model of bluetooth device.

3. Attempted Fixes:
A) Soft reset of iPhone4 under settings....No help.
B) Hard reset of iPhone4 -Holding Home and power button at same time..NO Help.
C) Complete Reset of iPhone4 with iTunes....No Help.
D) Switching bluetooth On and Off while on call....No Help.
E) Removing bluetooth device on iPhone (ignore this device) and re-pairing
device as new....No Help.
D) Switching from speaker to bluetooth to iPhone to bluetooth....No Help.
E) Installing insulted iPhone cover, sleeve....No Help.
F) Contacting Apple support with trouble ticket MANY Times....NO HELP.

Sep 8, 2010 6:53 AM in response to jmandigo

There's hope for iOS 4.1!

"...Steve Jobs announced the upcoming availability of iOS 4.1 for the iPhone and iPod touch. Jobs noted that the long running proximity sensor, Bluetooth, and iPhone 3G performance bugs that have been raised by users will be fixed in this update. "

Hopefully we should know if the bluetooth issue is fixed in a few days when iOS 4.1 is released.

Sep 9, 2010 5:02 AM in response to jmandigo

Hi,

Just tested 4.1 this morning with my 3GS and Pioneer DEH-P700BT car audio (quite similar to P7000BT and so on), it still won't reconnect after first pairing. Just like 4.0, 4.0.1, 4.0.2.
However, you'll be glad to notice that AVRCP is well done, as remote commands now work from the Pioneer device. Only once then.
Apple, please bring back correct A2DP profile, grrrrr !!!!

Sep 12, 2010 7:33 PM in response to ifanatic

I had the same problem connecting iPhone with 4.1 (8B117) version to a Pioneer DEH P8080BT.

- Now only the phone (BT phone) works and reconnects automatically (as before).
- BT Audio (that worked nicely in previous versions) now is impossible to connect!

Iphone Bluetooth screen is poor and does not offer control or information regarding what is happening. Time to move to Android? I hope Apple could do something quickly to fix this newly created problem, or replace the previous version that worked in a better way.

iphone bluetooth interference garble with Pioneer DEH-P7000BT car stereo

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