Without any congestion during testing of the network, Vodafone did achieve 100Mbps speed in tests. However, once the pipelines become filled with subscribers, the speed should drop off from that peak. The carrier also has two lots of 20MHz contiguous spectrum in the 1800MHz band which allows it to offer faster data speeds than the competition.
Vodafone Australia has lost 1.5 million subscribers since 2010 thanks to issues with its network and customer service. Now, it allows a newly signed customer to break a new contract if he or she isn't happy with the service in the first 30 days. It has also spent $1 billion AU ($947 million USD) on overhauling its network.
source: ZDNet via TechRadar