I have an nd-bt1 on my z3 flashed z1 and a verizon samsung saga and i have noticed more than a few times my bluetooth connection will drop completely and then reconnect 10-15 seconds later. My phone always sits in the same spot, right on my center console directly below the nav so its not like it is moving. I did buy a refurb'd nd-bt1 unit if that has any play in it.
Any ideas?
thanks in advance