... : 3GPP Release4, Multislot class 10, up to 85.6Kbps3.* FrequencyBand : GSM/GPRS/EDGE :850/900/1800/1900 MHz UMTS:2100MHZ4. *Power ... :850/900/1800/1900: Power Class E25 .*External Interface: UMTS/GSM Antenna: Supported, Internal Antenna UMTS Rx Divisity Antenna :Optional, Internal ... SIM card interface, compaliant with 3GPP 31.101 and 31.102 AT Interface :3GPP TS 27.005/3GPP TS27.007 supported6 ...