Apparently this is a known issue to T-mobile & Blackberry.
If I use my bluetooth headset to make calls, from that point forward, my phone is no longer able to make "handset" calls. That option doesn't exist in the call screen. Just Speakerphone, if I turn off Bluetooth. Stays this way despite reboot with BT off, pulling battery, etc. Very annoying. I hope they fix this ASAP with a patch.
Anyone else see this?