My Go730 connects perfectly to my Nokia 6300. I can use the hands free phone without a worry. But when I try to use any of the TomTom services ie TomTom weather or TomTom buddies etc. the TomTom immediately locks up (for approx 10-15 seconds) then goes to a black screen and then re starts itself. I have noticed that my phone shows that it has connected to the TomTom but after 2 seconds states that it is disconnecting to the TomTom. I have reset the device but this does not fix the problem. Any ideas on how to fix this problem would be greatly appreciated.