... dual band 900/1800Mhz,support SMS,MMS,FAX,WEB,JAVA MC52i dual band 900/1800Mhz,support SMS,MMS,FAX ... ,WEB,TCP/IP,JAVA MC55 three-band,900/1800/1900MHz support SMS,MMS ... ,FAX,WEB,TCP/IP,JAVA MC56 three-band,850/1800/1900MHz support SMS,MMS ... or 850/900/1800/1900 Mhz 16 x SIM card(big/small) slotsWireless access to internetComply with GSM phase2 ...