The following table is a rough estimate of download & upload speeds for mobile data. Your mileage may vary.

                         Speed (est.)
                       Download  Upload
Edge/GSM (E/2G)        170Kbps   50Kbps
HSDPA (3G)             2.5Mbps  300Kbps
HSPA/HSPA+ (H/H+/4G)    21Mbps  5.8Mbps