SAMSUNG DUO is a quad band device supporting CDMA 800 and 1800 MHz band and GSM 900 and 1800 MHz band and is a completely customized CDMA phone available in India.CDMA cum GSMDUO is a quad band device supporting CDMA 800 and 1900 MHz bands with GSM 900 and 1800 MHz band. The handset operates on CDMA network as well as GSM networks in India and internationally. You can switch between the two networks easily without the need for restarting the handset. World roaming
Roam around the world freely with new advanced DUO.
