No problems with my Blackberry Storm2 I’ve never seen issues with how I hold the phone. I also use a Bluetooth headset when I’m driving.
I have problems with my 9130 in my house. Only place I have any trouble. I can make calls from inside elevators but cannot make a call from inside my house.
Probably due to the rebar and other straps they put in for hurricane code now. Essentially live in a faraday cage now.