Billion Connect does not provide an unlimited‑data eSIM for Australia. All Australian‑specific plans listed by Billion Connect are fixed data bundles that must be used within a set validity period. For example, the Orange World eSIM 31 Days 100GB gives 100GB of high‑speed data for 31 days, while the Australia eSIM 30 Days 50GB offers 50GB for 30 days, both with tethering allowed and a speed reduction to 384 kbps. Fixed data plans can be more cost effective for typical travelers unless the user is an exceptionally heavy data consumer.