I finally got the answer to what the D icon is by verizon techs which stand for Digital signal in regards to calling not data. This should be on in most cases right? meaning that if your not seeing this D then your using an analog signal which could contribute to the poor call quality for some. When I first got the Fascinate this D showed up every ones in a while but then did the *228 option 2 then I got this constant D which lead me to this quest to find out what it was. Now the question is does every one get this icon in a consistent bases?