Mazda Forum - Mazda Enthusiast Forums - here is some information on how I resolved my bluetooth problems.

here is some information on how I resolved my bluetooth problems:

At first I was not able to connect my Android 4.1.2 Bluetooth to my new Mazda SUV CX9. I mean, it would pair and connect. Audio would pretend to play the songs I have on my Samsung Note 2, but no sound comes out. I solved it by upgrading to Jelly Bean 4.3 version of Android. However I had to boot my phone to "SAFE MODE" to get Mazda to automatically play songs from my Note2. If I do not run in SAFE MODE, I get the message "cannot playback bluetooth device while acquiring phone data". My Mazda dashboard would show that it is playing the songs I have on my Samsung Note 2, but no sound comes out from my Mazda stereo. My Note 2 will play music via earphone (not speakers) and there is no way to get my phone to play music via Note2 speaker again - I had to reboot my phone.

I stopped all my apps using "Advanced Task Killer". that did not work.
I found out that I had to uninstall my phone apps called Talkatone. It was trying to download data into my Mazda's contact list, which stops my car radio from playing

ps. When not in SAFE MODE, ie. in normal MODE, My phone on CX9 connects fine via Bluetooth to Samsung Note 2 running on 4.1.2 android and 4.3.

. I am still not able to connect USB to android. Anyone solved this problem?