ok, i think i got it now (review: at&t uses the 850 (aka 800) and 1900MHz bands in the us) so the phones that use both frequencies would presumably would have the best reception. right? they are the nokia 6800 does GSM/GPRS 850/1900, the 6200 does GSM/GPRS/EDGE 850/1800/1900, the 3595 does GSM/GPRS 850/1900, the 3590 does GSM/GPRS 850/1900, the 3300 does GSM/GPRS 850/1900, and the 3100 does GSM 850/1800/1900. none of those support bluetooth, btw.