hehe funny thing happened with my bluetooth too, i was driving home in my DD and spotted my misses comming out of a turning up ahead in the x5, after a few over taking manouvers i found myself behind her sitting in traffic, i was going to call her but then my phone says.. "paired with BMW"! im thinking this could be fun so i decide to call the local balti take away hehe and let her have a chat with them, after that i think i called the gym, then the vet's, etc... i could tell she was pretty puzzeled as she called me on her mobile after that and actually rang through to herself in the car!! must have had some serious reverrrbbbbb!!

i was pissing myself laughing... i was quite impressed at the range of the bluetooth actually as i was inside my car behinfd the X and its still conneced!

The bluetooth connects with the last phone it was paired with so when me and her are in the car together it automatically pairs with hers not mine as mine was paired first ;)

saves me explaining why im not answering calls to my mates all the time:thumbup:

Actually you can select the order of phones it would pair with.
what it does is searches for the first phone on the list, then goes for the second and up to 4 phones, If you are first (not in car) and your wife is in the car with bluetooth on phone on, it will pair but after some time. It first would need to give up on searching for your phone.
I have yet to see the bluetooth switch from phones by itself.(second to first).
Although this is something I should try or experiment. Some problems with disconnectiong I started to encounter since adding a unapprouved arte as a second phone which is always with me.
I switch from phone1 to phone2 by going to bluetooth and move up second phone to the top and within next 30 seconds, the second phone is paired.

P.S. Arte is compatible, but I noticed phonebook problems, if the contact has more then one name, the addressbook only transfers one name which is very annoying and makes the feature useless.