Prices in pounds · O2 prices checked 6 November 2026
O2 roaming in Australia vs a travel eSIM
In Australia, O2 uses its O2 Travel prices. Here is what that costs for a long weekend, a week and a fortnight, next to a data-only travel eSIM for the same trip.
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O2 vs eSIM in Australia: 3, 7 and 14 days
O2’s lowest published option in Australia for each trip length, next to a Graba SIM Australia plan with about 0.7 GB a day.
- 3 days
- 7 days
- 14 days
O2 roamingGraba SIM eSIM
| Trip | O2 | Graba SIM eSIM | Difference |
|---|---|---|---|
| A long weekend3 days | £21.00£7 a day × 3 | £3.493GB, 30 days | The eSIM is £17.51 less |
| A week7 days | £49.00£7 a day × 7 | £3.995GB, 30 days | The eSIM is £45.01 less |
| A fortnight14 days | £98.00£7 a day × 14 | £5.9910GB, 30 days | The eSIM is £92.01 less |
What’s included: O2: unlimited calls, texts and data, at up to 2 Mbps. Graba SIM: data only, prepaid; your O2 SIM stays in your phone for calls and texts. Graba SIM prices are live; O2 prices checked 6 November 2026.
Sources: O2 roaming (checked 6 November 2026). Prices change; check before you buy.
Graba SIM Australia plans: data, validity and total price
Each plan is a one-off price for one eSIM. It starts when it first connects in Australia, and hotspot use comes out of the same data.
Using your phone in Australia
- SYD Sydney
- MEL Melbourne
- BNE Brisbane
- PER Perth
- CNS Cairns
- Sydney and Melbourne
- Strong signal across both cities.
- The Great Barrier Reef
- Cairns and Port Douglas are covered; reef boat trips lose signal offshore.
- The Great Ocean Road
- Good in towns; stretches between them have gaps.
- The outback and Uluru
- Mobile coverage is limited outside towns. Carry offline maps on long drives.
- The Gold Coast and Byron Bay
- Well covered along the coast.
Networks our Australia plans use: Optus
- Outside towns, much of Australia has no mobile signal on any network. Plan long drives with offline maps.
- Long flights mean long trips: a 30-day plan suits most holidays. If you are staying on a working holiday, a local monthly plan may suit you better after the first month.
Going further with O2
- New Zealand (a combined trip to New Zealand): O2 charges £7 a day.
What you get for the money
O2 Travel Bolt On
- £7 a day, charged only on days you make a call, send a text or use data. Receiving calls and texts doesn’t trigger it.
- Calls to the UK and within the destination are included; calls to other countries are not.
- O2 Travel starts a 24-hour charge the first time you call, text or use data. Receiving calls and texts doesn’t start it.
Graba SIM Australia eSIM
- 5 plan sizes for Australia, from 1GB, 7 days to 20GB, 30 days, each a one-off price.
- Runs on Optus in Australia, with 5G where the network offers it.
- Data only. Your O2 SIM stays on for calls and texts, so bank codes still reach you in Australia.
O2 in Australia: questions
How much does O2 roaming cost in Australia?
£7 a day with the O2 Travel Bolt On: unlimited calls, texts and data, at up to 2 Mbps. For a trip, that is 3 days: £21.00 (£7 a day × 3); 7 days: £49.00 (£7 a day × 7); 14 days: £98.00 (£7 a day × 14).
Is a travel eSIM cheaper than O2 in Australia?
It depends on the trip. Comparing O2’s lowest published option with a Graba SIM plan of about 0.7 GB a day: 3 days, the eSIM is £17.51 less; 7 days, the eSIM is £45.01 less; 14 days, the eSIM is £92.01 less. O2’s price also includes unlimited calls, texts and data, at up to 2 Mbps.
Does an Australia eSIM work in the outback?
Only where the network has signal, which is mainly in and around towns and along major highways. Large parts of the outback have no mobile coverage on any network.
Does an Australia eSIM work in New Zealand?
An Australia-only plan covers Australia. For a combined trip, check the plan’s coverage list or add a New Zealand plan.