Every time someone asks me how to get internet in Australia, the conversation ends up at the same point: it's not a country, it's a continent, and what works in Sydney won't work 400 km from Alice Springs. Here, I compare all the real connection options —your carrier, hotel Wi-Fi, Australian SIM, and digital— with updated coverage data and prices. And yes, I'm going to tell you where you won't have signal no matter what you do.
How the Australian mobile network works
To get connected in Australia, you have four options: roaming with your Spanish carrier (convenient but expensive), hotel Wi-Fi (limited), a local Australian SIM (cheap, but requires paperwork), or a travel eSIM (instant activation and reasonable price). For most tourists, an eSIM on the Telstra network offers the best combination of coverage and cost.
Australia has three real mobile networks: Telstra, Optus, and Vodafone (TPG group). Everything else —Boost, Aldi Mobile, Belong, Lebara, and co.— are virtual operators that lease one of these three. The important thing is not the brand on the logo, but which physical network you are using, because the differences between them are abysmal once you leave the paved roads.
There's a technical detail that catches European travelers off guard: Australia switched off 3G on October 28, 2024. There is no longer a backup network. Consequently, Australian operators block phones that cannot make emergency calls via VoLTE (Voice over 4G). If your mobile is a few years old or a rare imported model, there's a real possibility that it won't be able to connect to any Australian network, regardless of whether you're using a local SIM or your home carrier.
5G is fast in the capitals, but 4G remains the backbone of the country outside major cities. In terms of bands, any smartphone sold in Spain in recent years is compatible: the problem is never the bands, it's VoLTE.
Option 1: Roaming with your Spanish carrier
Let's start with the obvious: Australia is not in European Zone 1. For Movistar, Orange, Vodafone, or Yoigo, it's "rest of the world," the most expensive zone in their tables. That changes the travel arithmetic.
Without contracting any add-on, browsing in Australia with your Spanish plan can cost up to €25 per GB, with calls over €3 per minute. This is not an exaggeration: it's what appears in the terms and conditions of the major carriers. A couple of careless uploads of photos to the cloud and you'll have a three-figure bill.
The alternative they'll offer are international passes: between €10 and €15 a day with a limited amount of data. This is where distance turns into money. No one flies 24 hours to Australia to stay for five days: the typical trip is two or three weeks. Multiply €12 by 18 days and you're paying over €200 just for data, without having made a single long call. If you want the numbers broken down by carrier, I have them here: how much international roaming costs.
So, is it good for anything? Yes, for one thing: keeping your Spanish number active to receive bank SMS or an urgent call. But as a primary source of data on a long trip, it's the worst value for money of the four options. I elaborate on the detailed comparison in eSIM vs roaming.
Option 2: Hotel (and cafe) Wi-Fi
Australia is a country with good infrastructure and Wi-Fi everywhere: hotels, hostels, public libraries, shopping centers, McDonald's, coffee chains. In Sydney and Melbourne, there's even free public Wi-Fi in a good part of the city center. Sounds sufficient. It's not.
The first problem is quality. Many hostels and mid-range hotels limit speed or volume per guest, and in regional areas, Wi-Fi runs on satellite or an overloaded NBN connection: a video call at nine at night, with thirty guests connected, is an exercise in patience.
The second problem is fundamental: Wi-Fi is where you aren't. In Australia, the journey happens on the road, on the ferry to the Great Barrier, in the national park, at the bus stop at six in the morning. Just when you need Google Maps, your train ticket, or the tour number, there's no Wi-Fi. And security doesn't help either: on open networks at airports and cafes, avoid logging into your bank, or use a VPN.
My verdict: Wi-Fi is an excellent complement —for downloading maps, backing up photos, and watching series at night— but it should never be your main connection plan in Australia.
Option 3: Local Australian SIM (Telstra, Optus, Vodafone)
Buying a prepaid Australian SIM card is legitimate and, if you're going for six months on a work visa, it's probably the best option. You can find them at the airport, in Coles and Woolworths supermarkets, at post offices, and in each carrier's stores. You need your passport to register it: the law requires it.
Approximate prices, in Australian dollars, are as follows:
| Carrier | Typical Tourist Plan | Approx. Price (AUD) | Note |
|---|---|---|---|
| Telstra | Prepaid from 20 GB / 28 days | From ~30 AUD | Best coverage in the country, most expensive |
| Optus | 40 GB / 28 days with calls | ~35 AUD | Good urban price-coverage balance |
| Optus | 60-80 GB / 28 days | 45-55 AUD | Lots of data; limited regional coverage |
| Vodafone | ~45 GB / 28 days | ~40 AUD | Aggressive pricing; worse network outside cities |
Here's what almost no one tells you. The coverage difference between the three is not a nuance, it's out of this world. Telstra covers over 2.14 million km² of territory; Optus and Vodafone each cover around 1.2 million km². In terms of population, they seem tied (Telstra ~99.7%, Vodafone ~98.5% after their 2025 network agreement), but Australians live close to the coast. If you're going to drive, Telstra is the only serious answer.
The downsides: you lose your Spanish number while using it (unless you have a dual SIM), you queue at the airport after 24 hours of flying and you're uncommunicated until you buy one. I compare it in depth in eSIM vs local SIM.
Option 4: Travel eSIM, my recommendation
An eSIM is the same as a SIM card, but digital: it's downloaded to your mobile and coexists with your Spanish line without removing anything. If you've never used one, start here: what is an eSIM.
For a trip to Australia, it solves the three previous problems at once. You buy it from home, activate it upon landing, and have data before leaving the terminal, just when you need to order an Uber or let someone know you've arrived. You keep your Spanish number active for bank SMS. And you don't depend on the airport store being open or having stock.
The key lies in the network it relies on. A travel eSIM connects to the local operator's network with whom it has an agreement, and that's where you need to read the fine print before buying: if the plan only routes through Optus or Vodafone, you'll have a great experience in cities and a frustrating experience on the road. Our plan for Australia prioritizes the network with the best regional coverage precisely for that reason.
My rule for Australia: choose by coverage, not by price per gigabyte. Ten gigabytes that work on the Great Ocean Road are worth more than thirty that only work in Melbourne's CBD.
And what about the pocket Wi-Fi rented at some airports? It was a good idea in 2015. Today it's another device to carry, with a battery that dies in the afternoon and needs to be returned. If you're considering it, read eSIM vs pocket Wi-Fi first.
Comparison: The four options face-to-face
With everything on the table, here's the outlook for a Spanish tourist traveling for two or three weeks:
| Option | Typical Cost (3 weeks) | Activation | Keeps your number | Coverage | For whom |
|---|---|---|---|---|---|
| Roaming (daily pass) | €200-€300 | Immediate | Yes | Whichever network is assigned | Very short or business trips |
| Roaming (no add-on) | Up to €25/GB | Immediate | Yes | Same | No one, honestly |
| Hotel Wi-Fi | €0 | Immediate | Yes | Indoors only | Complement, never plan A |
| Local SIM | €35-€60 (depending on GB) | Queue + passport | No (unless dual SIM) | Excellent if you choose Telstra | Long stays, working holiday |
| Travel eSIM | From ~€20-€40 | Before flying | Yes | Depends on the plan: check the network | Tourist with flight and itinerary booked |
You'll see that the decision is rarely a technical tie. If your trip is classic —Sydney, east coast, maybe Melbourne or the Red Centre, between 12 and 25 days— the digital option wins by a landslide: it costs a fraction of the daily pass, doesn't force you to queue with jet lag, and keeps your home number alive. If you're settling for a year, the local card with a monthly contract is more worthwhile, and I won't argue there.
The Spanish operator's daily pass only makes sense for a two-day layover or a business trip. For everything else, you pay dearly for the convenience of doing nothing. I have the step-by-step setup and activation guide separately: eSIM Australia.
Real coverage: Sydney, Melbourne, the Great Barrier, Uluru, and the Outback
This is the section that truly matters, and the one that almost no guide dares to write with honesty. Australia has 7.7 million km² —fifteen times the size of Spain— and most of the interior has no mobile coverage whatsoever. None. Not Telstra, not Optus, not anyone. Accepting this upfront will save you trouble.
| Area | What to expect |
|---|---|
| Sydney, Melbourne, Brisbane, Perth | Excellent 5G on all networks. No problems. |
| East Coast (Byron, Gold Coast, Cairns) | Solid 4G/5G in towns and along the main highway. |
| Great Ocean Road, Blue Mountains | Good at lookouts and towns; gaps in between. Telstra holds up better. |
| Great Barrier Reef | Signal in Cairns and Port Douglas. On the boat, a few kilometers from shore, zero. Islands within the reef have partial coverage. |
| Uluru / Kata Tjuta | Coverage at Yulara resort with all three networks. Dead zones around the Kata Tjuta walk. |
| Alice Springs, Coober Pedy | Coverage within the town. Outside, it ends within a few kilometers. |
| Stuart Highway, Nullarbor, Kimberley, Simpson Desert | No coverage for hundreds of kilometers at a stretch. Only isolated signal spots in towns and roadhouses. |
Translated into practice: if your trip is urban and coastal, any network will do; if you're driving inland, Telstra isn't "the best," it's the only option, and even then you'll spend hours without a bar. The Nullarbor is 1,200 km of straight road where you might encounter more kangaroos than antennas.
How much data do you really need?
The million-dollar question, and where most people overdo it by buying 50 GB plans they won't even touch. An average tourist, using their phone as a GPS, camera, and search engine, consumes much less than they think, because most of the day they're walking, diving, or looking out the window of a 4x4.
| Profile | Daily Consumption | For 2-3 Weeks |
|---|---|---|
| Basic: maps, WhatsApp, some Instagram | ~300-500 MB | 10 GB |
| Standard: previous + stories, short videos, browser | ~700 MB - 1 GB | 15-20 GB |
| Intensive: open cloud, daily video calls, streaming | 1.5-2 GB | 25-30 GB |
| Digital nomad / remote work | 2-3 GB+ | 40 GB or unlimited |
My honest recommendation for two or three weeks: between 10 and 20 GB. That range comfortably covers 80% of travelers. And there's an Australian factor in your favor: since you'll be without coverage for a good part of the road trips, your actual consumption will be lower compared to a European trip.
Two tips for stretching your data. First, download offline maps before leaving the hotel: Google Maps allows you to save entire regions, and in Australia this isn't a money-saving trick, it's a safety measure. Second, disable automatic photo and video backups over mobile data; on a photo-heavy trip like this, that's what will eat your data without you realizing it.
What to do when there's no coverage (and how to prepare before you fly)
You will lose signal. It's not a possibility, it's a certainty if you leave the coast. So the right question isn't "how do I avoid losing coverage?", but "how do I make sure it doesn't affect me?". Prepare for it from Spain, calmly:
- Check that your mobile supports VoLTE. This is the real requirement to connect in Australia since the 3G shutdown. Look for it in Settings > Mobile Network.
- Download offline maps of every region you're going to travel through, not just the cities. And keep your itinerary, bookings, and tickets saved locally, not in a browser tab.
- Save important phone numbers: Australia's emergency number is 000, and it works even without credit.
- If you're driving in the Outback, consider renting a satellite phone or an emergency beacon (PLB): they can be rented in Darwin, Alice Springs, and many tourist offices, and on stretches like the Gibb River Road, they are simply common sense.
- Useful new feature: Telstra now offers satellite SMS (via Starlink) in areas without network, outdoors and with a clear view of the sky. It depends on the phone model, but it's a lifesaver that didn't exist two years ago.
And a recommendation I always repeat: install and configure the connection before boarding. A Madrid-Sydney flight is almost 24 hours door-to-door; arriving at six in the morning and having to deal with a store queue is exactly when everything goes wrong.
Frequently asked questions
Will my Spanish mobile work in Australia?
Yes, as long as it's a smartphone from recent years and has VoLTE activated. Australia switched off 3G in October 2024, and operators block devices that cannot make emergency calls via 4G. Bands are not an issue: any mobile sold in Spain is compatible.
What is the best mobile network in Australia?
Telstra, hands down, if you're going outside the cities: it covers over 2.14 million km² compared to Optus and Vodafone's ~1.2 million. In Sydney, Melbourne, or Brisbane, all three work perfectly, and the difference is irrelevant.
Is there coverage at Uluru and the Great Barrier Reef?
At Yulara resort (Uluru), yes, with all three networks, although there are dead zones on the Kata Tjuta walk. On the Great Barrier Reef, you'll have signal in Cairns and Port Douglas, but on the boat, out at sea, there's no coverage. Download what you need before boarding.
How many GB do I need for two weeks in Australia?
For normal tourist use—maps, messaging, social media, and some browsing—10-15 GB will be more than enough. If you make daily video calls or upload many videos, increase it to 20-30 GB. Remember that on the road, you'll spend hours without a network, so you'll use less than you think.
How much does roaming in Australia cost with a Spanish operator?
Expensive. Australia is in the most expensive zone: without a data bundle, it can reach €25 per GB and over €3 per minute. Daily passes are around €10-15 per day, which easily exceeds €200 in three weeks.
Is it worth buying a SIM card at the airport upon arrival?
Only if you're staying for months. For a tourist trip, you waste time and your Spanish number, you arrive incommunicado after a 24-hour flight, and the plan you want may not always be in stock. Sorting it out before flying is cheaper and less stressful.
Can I rely solely on hotel Wi-Fi?
I don't recommend it. Australian Wi-Fi is abundant indoors, but the trip happens outside: on the road, in the national park, on the ferry. Use it as a complement to download maps and back up data, never as your primary plan.
What should I do if I lose coverage in the Outback?
Prepare beforehand: offline maps, downloaded itinerary, and, if driving on remote routes, a satellite phone or a rented PLB beacon. The emergency number is 000. Telstra also offers satellite SMS in areas without network coverage.
Conclusion
Australia is a two-speed destination. On the coast and in cities, connecting is as easy as in Barcelona: fast 5G, Wi-Fi everywhere, and any operator will do. As soon as you turn the wheel inland, the country reminds you of its size, and connectivity goes from being a convenience to being a matter of logistics and safety.
That's why my advice is twofold. One: choose based on coverage, not price per gigabyte, and ensure your plan relies on the network with the best regional reach. Two: arrive with everything sorted—active data, downloaded maps, VoLTE verified—because jet lag is not a good advisor for setting anything up.
If you want to leave Sydney Airport already connected, without queues, without a passport in hand, and without surprises on your bill, that's exactly the solution we've prepared: activate your Australia eSIM before flying and don't worry about a thing. See you on the other side of the world.
