I have a Samsung Galaxy S I-9000 (the international version) and I have a car dock manufactured by Samsung for this phone (given to me by the Samsung representative who works with my cellphone provider, so I have good reason to believe it's the real thing).
I know that most car docks have a magnet that the phone uses to detect that it's been docked. Mine seems to have one because when the phone is docked, the magnetic compass always points north, and when it's not docked, the compass points in the right direction (I checked this using Car Dashboard, which uses the internal compass when the phone isn't moving).
The question is, should me phone detect the car dock? How can I check this? If it should, but doesn't, how can I troubleshoot it?