Sony Ericsson has presented its best Sony Ericsson W580i. This is Sony Ericsson’s first slider phone Sony Ericsson, a device derived largely from the W580 Walkman handset. This handset is a candy bar phone it has EDGE, GPRS, and GSM network and has both network supports. The W580i is a sleek, slim, street style slider phone – and a portable music device too. Tempting to touch, designed to impress.