Optus dual band (2100/900MHz) handset/device required to access 3G services in the Optus dual band coverage area. Many factors affect coverage including location and demand on the network. Many factors affect Wireless Broadband speeds including volume of internet traffic, your equipment, location, software and source of your download. Different speeds will be obtained at different times, depending on congestion, location, local conditions, hardware, software and general internet traffic.