Further to RB’s problem, I have also just changed to an iPhone and had Bluetooth problems. I run a 2004 BMW 330 convertible with integrated Bluetooth hands free as part of the factory fit satnav. Previous phones have paired with no problems. When I paired my car and iPhone, whilst the phone and car connected they would disconnect after just a few seconds rendering it useless. I spoke to my BMW dealer who stated it is a problem with the data speed / quantity and the iPhone was not considered compatible. There was a hardware solution to upgrade the Bluetooth but it would cost £500. I changed my iPhone settings to just transfer favourites and placed those numbers I am likely to call into my favourites (20 or so). Since then my iPhone has paired flawlessly with the car. This may also work for other cars and Bluetooth devices.

Asked on 17 April 2010 by S.S., Lifton, Devon

Answered by Honest John
Clever man. Well thought through. I will try to run that. Will also
include in car by car breakdown at hjuk.
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