You should always carry an EPIRB.
Along with your EPIRB download the FREE Emergency + app onto your smart phone. Emergency + is an app developed by Australia’s emergency services and government and industry partners, helping people to call the right number at the right time, anywhere in Australia. The app uses a mobile phone’s GPS functionality so callers can provide emergency call takers with their location information as determined by their smart phone. Emergency + also includes Police Assistance Line numbers as options, so non-emergency calls are made to the most appropriate number. If you are out in the bush and injured please call the Police, this will allow the emergency services you need to get to you as quickly as possible.
Remember this app does not replace an EPIRB and will only work when you have mobile phone coverage; an EPIRB will work anywhere.
YOU SHOULD ALWAYS CARRY AN EPIRB.