I've noticed very inconsistent behavior from my bluetooth headset and my iPhone 4. Work fine for voice calls, but doesn't work for a GPS Navigator or Voip. Works for Facetime most of the time, but sometimes won't. Anyone else having this kind of inconsistencies?
I was told by support that it is normal for bluetooth headsets to only work for voice calls on the iPhone 4. That really doesn't make sense to me, so I can't use a GPS Navigator with voice turn by turn directions with my bluetooth headset? My ancient 5 year old Motorola Razr would do that.