Mobile Network Support and BandCasio GZone Type-L have Yes Card Slots, Casio GZone Type-L support dual mode based on GSM/CDMA based network providers. Casio GZone Type-L mobile device support GSM 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900, Casio GZone Type-L mobile device support CDMA 2G Band Frequency at CDMA 1900,CDMA 2100,CDMA 1700,CDMA 850 and Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA 1700,HSDPA 1900,HSDPA 2100, Casio GZone Type