I too have the very same issue.
It seems with these units the bluetooth Audio chipset uses the same audio profiles? "well so ive been told"
By turning off the Bluetooth via IGO Primo will remove this fault, however i've so far be unable to do this.
I have tried Primo 1.1 , 1.2 & 2.0 and they all crash during an in coming call.
With my device the unit freezez and then reboots after 40 seconds.
Can anyone help us?
Hi, would it be because the chip they use works with bluetooth headset only and will not connect to a phone properly, ie, bluetooth will not work correctly if you have bluetoothed the phone to the gps and headset to gps. Have a look at the manual you got with the gps and it will probably say that it works with bluetooth headset, mine does and it is a chinese brand gps. Good luck in your attempts to get it working.