Telstra 4G leaves rest standing TELSTRA is weeks away from unveiling technology that by 2015 could be more than four times faster than the Coalition's $20.4 billion National Broadband Network. The news comes as Telstra revealed that more than 3.2 million 4G devices were already operating on its network. Under the Coalition's fibre-to-the-node NBN plan released before the election, users will receive download speeds of up to 100 megabits per second. The NBN rollout will be completed by the end of 2019. However, things could change following the government's review of the project to be released on December 2. Telstra's "carrier aggregation" device will provide peak download speeds of up to 150 megabits per second by the end of the year on mobile devices. And Telstra executive director, networks, Mike Wright said it would jump to 300 megabits per second by the end of next year. Mr Wright foresees speeds reaching even higher levels as technology improves. "Beyond the end of next year we can quite clearly see 450 megabits per second on the roadmap," he said. He said that "every time we blink, we have to take into account the next evolution in technology." To access the speeds, consumers will need a dongle or WiFi hotspot that Mr Wright says will be comparable to current plans. The minimum cost on a 1GB plan over 24 months for a Telstra WiFi 4G hotspot is $744. It can deliver speeds up to 40Mbps. In time, carrier aggregation technology will be embedded in mobile devices, Mr Wright said. South Korea has already announced such plans with SK Telecom, KT and LGU+ planning to offer a Samsung Galaxy S4 smartphone with carrier aggregation technology offering speeds of up to 150Mbps. Telstra yesterday released figures that showed 23 per cent of its 13.8 million mobile subscribers had 4G devices.