General Packet Radio Service is a data transfer method used with GSM networks. In this method, data is transferred in packets using the Internet Protocol (IP), rather than in streams. Data transfer rates for GPRS vary from 56 to 114 Kilobits per second. It is a step slower than the EDGE (Enhanced Data GSM Environment) protocol, which delivers data at maximum rates of 384 Kilobits per second. Apple’s iPhone is a GPRS / EDGE enabled device.