Actually, its the other way around. AT&T is taking longer than Cingular to convert to GSM. Cingular started converting almost a year later after AT&T started, and Cingular is almost done in less than 2 years. Cingular has already launched GSM 800 in most areas while AT&T has a long way before launching GSM 800 fully. Cingular is 92% done and they expect to be done by this summer. AT&T on the other hand, started in mid 2001 and it's been over 2 years and they have not launched GSM 800Mhz fully in any market yet and they are still selling TDMA while Cingular stopped TDMA sales in most areas a long time ago. Cingular cannot possibly take 4 years since they are not even 4 years old! They started converting in Spring 2002.