CEL-FI is the only consumer mobile phone repeater that has been widely approved by all mobile carriers in Australia. Currently approved for use on the Telstra, Optus and Vodafone mobile networks, CEL-FI is a new type of mobile enhancement device called a Smart Repeater. There are other companies selling non-compliant consumer repeaters that appear to be from Australia, buying non CEL-FI repeaters from them may result in large fines and loss of the equipment.