I used three phones. The Nokia N73 is a quad band GSM and UMTS 2100 3G
(2G Network GSM 850, GSM 900, GSM 1800, GSM 1900 3G Network UMTS 2100)
The Samsung i560 is a tri band GSM & UMTS 2100 3G phone
(2G Network GSM 900, GSM 1800, GSM 1900 3G Network UMTS 2100)
The Nokia 3120 classic is a quad band GSM & dual band 3G phone
(2G Network GSM 850, GSM 900, GSM 1800, GSM 1900 3G Network UMTS 900 UMTS 2100)