The shape of an Australia trip
Australia is a continent roughly the size of the contiguous United States with about 27 million people, almost all of them on the eastern and south-eastern coasts. A trip usually traces that same edge: Sydney and the Blue Mountains, Melbourne and the Great Ocean Road, Brisbane and the Gold Coast, then maybe Cairns for the reef, Adelaide for the wine, or the long haul west to Perth. The cell network mirrors the population — dense and fast along the coastal cities and the highways that link them, thinning quickly the moment you turn inland toward the Outback, the Nullarbor, or the Red Centre.
Roamzy charges $2.15 per gigabyte in Australia — that's $0.0021 per megabyte, billed in real time on Australian networks. No subscription, no expiry on the unused balance, no minimum bundle. One per-MB rate across 193 countries, the same in Sydney as it is on the Stuart Highway.
How much will Roamzy actually cost on this trip?
A typical Australian day runs 0.8–1.5 GB: Maps for the long coastal drives, the Opal and myki transit apps, ride-share, the camera at the reef and the rock, contactless-everything banking, video calls across the time zones home. Call it 1 GB/day:
| Trip length | Roamzy ($2.15/GB) | Tourist roaming pass | Airport local SIM |
|---|---|---|---|
| 3 days (Sydney) | $6.45 | $15–40 | $15–30 + paperwork |
| 2 weeks (east coast) | $30.10 | $70–160 (often two passes) | $25–45 + 28-day cap |
| 4 weeks (around the country) | $60.20 | $140–320 (multiple passes) | $30–55 + cap or two SIMs |
Competitor prices in columns 3 and 4 are 2025 ranges based on typical offerings; exact figures depend on your home carrier and the airport store you visit. Roamzy's rate in column 2 is our actual published rate from the pricing page.
A SIM at Sydney or Melbourne airport is sold from the usual kiosks. The tariff is fine; the queue after a 14-hour flight isn't. The eSIM attaches before you land and the meter starts on an Australian tower as you taxi to the gate.
How is coverage distributed by region?
| Region | 5G | LTE | Notes |
|---|---|---|---|
| Sydney, Melbourne, Brisbane, Perth, Adelaide | Yes | 100% | 5G dense across the metros and their suburbs |
| East-coast corridor (Pacific & Princes Highways) | At towns | Most of the route | The populated edge is well covered city to city |
| Cairns, Gold Coast, Byron, Great Ocean Road | In towns | Solid | Dense in the tourist zones; reef boats drop offshore |
| Stuart Highway, Nullarbor, the Outback | No | Towns & roadhouses only | Long dead stretches between settlements — plan offline maps |
| Uluru, Kakadu, remote interior | No | Patchy | Coverage at the resort/township, little to none beyond |
The honest caveat: Australia's interior is vast and largely unserved by any network. Roamzy roams onto the same national towers as everyone else, so along the coasts and highways you are well connected — but for the Outback, the Nullarbor crossing, or deep national parks, download your maps before you leave the last town. No eSIM, local SIM, or roaming pass changes the physics of a continent that empty.