When my Droid X is connected to my blue ant bluetooth headset I can press the button on the headset, thephone goes to the voice command prompt, asks for, receives, and executes the voice command just fine... UNTIL... the security lock kicks in. After the security lock, I can only answer incoming calls. When I attempt to invoke a voice command the phone does not respond and my headset tells me voice commands are not supported. This is not the fault of the head set as other manufactures including Motorola have the same problem.