ZDNet | Optus launches consumer 4G ZDNet The company has so far installed LTE equipment operating in the 1800MHz spectrum band at 600 base stations across the country. The Sydney 4G network covers approximately 10km of the CBD, ranging from Lindfield in the north to Botany Bay in the south. Optus 4G ready to take on Telstra Optus flicks switch on 4G Samsung Galaxy S III 4G coming to Optus, Telstra |