Worldwide/US/Canada

These triband or quadband phones can be used worldwide. Among them, quadband phones can be used with any GSM sim-card and Triband phones can be used worldwide with any carrier that supports one of its frequencies. In USA, AT&T, Tmobile, Suncom, Fido can use the all quadband phones and triband phones in most areas. A small number of cities with AT&T only supports 850Mhz band and thus can only use Quadband phones.