From what I have read and understand you can have multiple phones hooked to the bluetooth. For example my husband and I both have phones but the car only picks up the phone that is within range of the car. Not sure what is going on but I also did some research on the types of phones and found alot of people who were having problems with various phones but the Motorola actually was suggested as the one that had the least amount of problems. Not sure if this information is any help but just thought I would throw it out there.

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Tracy
2005 Imola Red X5 4.4
1995 Daytona Violet M3
"Girls Go Fast Too"