HSDPA Qualcomm MSM 6280 Supporting protocol: HSDPA/UMTS/EDGE/GPRS/GSM Frequency: HSDPA/UMTS:2100MHz,EDGE/GPRS/GSM:900/1800/850/1900MHz Port connecting rapid rate:DL:7.2Mbps/UL:384Kbps Support Memory: T-Flash Card(8G) Support Voice Calls Support USSD Support Messaging Support Phone book Store Support System:Windows XP/Windows Vista/Windows2000/windows7 Support Andriod