What a disappointment this phone has been.  I've been using it for heavy business use (4,000 minutes a month and unlimited data plan - averaging 1,500-3,000 MB of data transfers a month).  I switched to Verizon after 12+ years with AT&T/Cingular because of this phone and the EVDO network.  Now I am stuck with a $500 paperweight and a $175 cancellation fee to go back to Cingular.