Vodafone 'to have fastest 4G net' VODAFONE Australia chief Bill Morrow says the recovering telecoms company will have the fastest 4G mobile network in Australia when it is launched this year. While Vodafone is the only major mobile player in Australia yet to commercially launch the 4G mobile standard, the company has larger holdings of the 1800Mhz spectrum than Optus and Telstra use to operate their 4G mobile networks.