MHI Bluetooth Interface Module quesiton
https://mbworld.org/forums/showthread.php?t=188818
Essentially though, the SAP profile means that the module actually takes over as your phone, by getting your SIM info. The MHI is just an interface, where the phone does all of the work. For the SAP, the module does all of the work, including acting as the antenna (using your cars antenna), etc...
I don't believe that there is an SAP module available in the US, however (not sure if you are or not). The SAP module is only capable of broadcasting in the MHZ frequency range used in Europe.
Hope this helps.



