... I'm finding that my phone sometimes disconnects and then has trouble reconnecting from my car's BT for no apparent reason. At these times I even seem to lose all phone service for a second or two and there's a little dialog bog that pops up telling me "The phone process has stopped" (or something like that). A reboot seems to help but it seems weird. Could this have anything to do with a sim card that is defective? Any ideas about what's going on?