Suprised you haven't seen this before, 3.5G has been around for a while. It is a nice speed upgrade to 3G; although, not as much as 2.5G to 3G. FYI 2.5G (GPRS) 56 kbit/s - 0.114 kbit/s 2.75G (EDGE) 236.8 kbit/s - 473.6 kbit/s 3G (UMTS) 512 kbit/s - 3.6 Mbit/s 3.5G (HSDPA) 1.8 Mbit/s - 16 Mbit/s