3G Broadband is the next step in third generation mobile telephony. HSDPA technology is the basis for it and allows a maximum download speed of 1.8 Mbps, which means you can download a 3 MB attachment in 20 seconds.
High Speed Packet Downlink Access. This increases the speed of the amount of data a base station can send to handsets to around 12Mbps, under ideal conditions. Runs alongside voice services, much as EDGE and GPRS can be used at the same time as GSM voice.