A great phone, but I had problems with the Bluetooth headset on calls. Whilst I could hear people OK, they said that my voice kept breaking up.
Loved the phone and exchanged it for another, but had the same trouble; a real shame. Now I'm back with my trusty old 6230i.
A colleague had the same Bluetooth headset problem, but I don't. It may be that not all headsets work with this phone. Headsets may need to be Bluetooth 2.0 compliant.