Network Methods Supported for USA :

Canada - Rogers  
United States - AT&T
United States - AT&T
Unitied States - T-Mobile
United States - T-Mobile
Unitied States - T-mobile - Omnipoint
Unitied States - T-Mobile - Omnipoint
United States - Cellular One
United States - Cellular One
United States - Cincinnati Bell
United States - Cincinnati Bell
United States - Suncom
United States - Suncom
United States - Cingular 
 United States - Cingular
 United States - Centennial Wireless 
 United States - Centennial Wireless