Ericsson R520m, first phone that supports fast General Packet Radio Service (GPRS). The phone supports Wireless Application Protocol (WAP) and High-Speed Circuit-Switched Data (HSCSD), which speeds up transmissions of GSM networks even if GPRS hasn't been deployed yet. The R520m is the successor for the R320s phone, a phone intended for the businessman. This means stacked with all the features they could find. The R520m mobile phone appears to have been rushed out of the door by Ericsson and suffers from a slow processor which makes most use tedious. The R520m has recently been recalled by the Ericsson factory.