[johnfkitchen]

This is a question regarding US E90s. It amy apply to other markets as well.

From the description copied and pasted from the BMWUSA website, it sounds as though there is a direct connection between the phone and the car that no longer uses bluetooth when the phone is in the cradle. However, I'm a little paranoid, especially as I'm finding that the bluetooth connection is not 100% as good as it might be. Sometimes my phone and the car just do not connect, and although they can be persuaded to behave properly after lots of pairing attempts, I hope that when I get my cradle, this problem goes away, and I'll no longer be using the bluetooth method of connection - it will use good, old fashioned wires.

Is this a reasonable hope?

Here is the BMW description:

This system provides a safe and secure place to dock your phone while driving and will charge your phone battery when the vehicle is running. The adaptor also provides a connection to the roof-mounted telephone antenna on your car for improved cellular reception. Best of all, snap-in adaptors are available for a variety of phones and can be changed out to accept a different phone in seconds.
BMW Integration
This system is only compatible with vehicles equipped with BMW assist with Bluetooth wireless technology. System base plate is required.