Australia is almost as large as the mainland United States, and most of its people live along the coast. Coverage is strong in Sydney, Melbourne, Brisbane and Perth and along the main highways, and it thins out fast inland. Many trips combine the cities with a road trip, the Great Barrier Reef or the red centre around Uluru. Australia is not part of the EU's Roam Like at Home area, and European plans usually charge roaming by the day.
This guide covers where the signal ends, how to call for help, and the seasonal risks worth knowing.
Key facts for Australia
- EU roaming: not covered by Roam Like at Home
- Local networks: Optus (depending on the plan)
- Emergency numbers: 000; 112 also works from a mobile
- Embassies: in Canberra, with consulates in Sydney, Melbourne and Perth for some countries
Sydney, Melbourne and the cities
In Sydney, you can tap on trains, buses, ferries and light rail with a contactless bank card or your phone, and the same works in more and more Australian cities. Coverage is strong across the big cities, so maps and messages keep working wherever you go in town.
The Outback and remote roads
Australian networks reach almost every person but only part of the land. Optus, the network Telcomia plans use in Australia, is strong in cities and towns and along major highways, but on Outback roads, in many national parks and between distant towns there can be no signal for hundreds of kilometres. Download maps, carry water and fuel, and tell someone your plans. For remote trips, a personal locator beacon is a reliable way to call for help without mobile coverage.
Calling 000
Triple zero (000) reaches the police, fire and ambulance services; from a mobile, 112 works too. You cannot send a text to 000. The official Emergency+ app calls 000 and shows your GPS position as an address you can read out to the operator.
Bushfires, beaches and wildlife
In summer, bushfires and floods can close roads at short notice, so follow your state's emergency app, such as Hazards Near Me in New South Wales or VicEmergency in Victoria. On beaches, swim between the red and yellow flags, where lifeguards patrol, and in the tropical north respect the warning signs about crocodiles and box jellyfish.
Getting connected
A travel eSIM installs at home with a QR code and starts its validity with the first connection in Australia. Your usual number keeps receiving texts and bank codes, while maps and messaging use the eSIM's data.
Australian prepaid SIMs are sold at airports, supermarkets and convenience stores, and they must be activated with an identity document such as your passport.
Consular protection: who to call in Australia
- 000 reaches the police, fire and ambulance services; from a mobile, 112 also works.
- Embassies are in Canberra, and some countries also have consulates in Sydney, Melbourne or Perth. The Telcomia app shows yours, with address and phone.
- If you are an EU citizen and your country has no embassy or consulate in Australia, the embassy of any other EU country must help you on the same terms as its own nationals (Article 23 of the Treaty on the Functioning of the EU).
Australia travel-safety page →
Questions travellers ask about Australia
Will my phone work in the Outback?
Often not between towns. Download maps and carry a personal locator beacon on remote trips.
What is the emergency number in Australia?
000; from a mobile, 112 also works. You cannot send a text to 000.
Which networks does a Telcomia eSIM use in Australia?
Optus, with 4G and 5G where available.
Which app helps in an emergency?
Emergency+, which calls 000 and shows your location.
The short version
Install the eSIM and the Emergency+ app before you fly, download maps before road trips, follow your state's emergency app in the fire season, and save 000.
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