With an eSIM you'll get data to connect to the internet, so you can use your smartphone throughout Australia. Most smartphones nowadays are compatible with eSIMs, but make sure to check just in case.
Get your eSIM data bundle for Australia and you'll have mobile data from the moment you land. More info about the Spaceships Easy eSIM Connection.
If you prefer an oldskool SIM that also includes mobile minutes, we recommend going to a shop when you arrive in Australia and get a SIM from Optus or Telstra.