... 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 ... and roaming and other additional costs.Time-saving and efficient: the same information can be sent at the same time to multiple targets, and can ...