What is an eSIM and why should you use one in Australia?
An eSIM (embedded SIM) is a digital version of the physical SIM card that’s already built into your smartphone, tablet, or laptop. Instead of inserting a plastic card, you install an eSIM profile provided by your chosen operator, which connects you to a mobile network in seconds.
In Australia, eSIMs work seamlessly on the country’s major networks such as Optus, Telstra, and Vodafone, depending on the provider you choose. Once activated, your eSIM behaves exactly like a traditional SIM card, you can browse, message, and tether your devices using mobile data.
Most modern phones, including iPhones from the XS series onwards and newer Android models, support eSIM functionality. Activation usually happens through a simple QR code or via the provider’s app, which downloads the configuration directly to your device.
Because the connection runs on established Australian networks, coverage is reliable across cities, towns, and many rural areas. Travellers can even switch between different eSIMs within their phone’s settings, making it easy to adjust data plans for longer trips or regional travel.
What’s better for Australia: an eSIM or a local SIM card?
For most travellers, an eSIM is the easier and faster option in Australia. You can activate it before your trip and connect the moment you land, without visiting a shop or providing local ID.
Local SIM cards from carriers like Optus, Telstra, and Vodafone can offer good deals, but they usually require registration, in-store activation, and a physical SIM swap. That process can be inconvenient if you’re only staying a few weeks or moving between regions.
eSIM advantages:
- Instant activation before or after arrival
- No paperwork or passport verification
- Keep your home number active while using mobile data
- Easy to top up or switch providers in the app
Local SIM advantages:
- May include an Australian phone number for calls and texts
- Sometimes cheaper for long-term residents
- Available in retail outlets across major cities
In short, eSIMs offer convenience and flexibility for travellers, while local SIM cards can make sense for those staying long term or needing local voice services.
Best eSIMs for Australia in 2025: Ubigi vs Saily
The best eSIM for Australia depends on how long you’re staying and how much data you need. Below is a comparison of two trusted providers, Ubigi and Saily, both offering fast 4G and 5G coverage, flexible data plans, and smooth app-based setup across the country.
Ubigi: best for longer stays and high-speed coverage
Ubigi is ideal if you want reliable connectivity for extended trips or remote work across Australia. Its eSIM connects to the Optus network, offering strong 4G and 5G coverage in cities and regional areas. With flexible data plans up to 50 GB and unlimited options, it’s a practical choice for travellers who need consistent internet access.
Why Ubigi works well in Australia:
- 1 GB to unlimited plans with 7–30 day validity
- 4G and 5G coverage nationwide on Optus
- Real-time data tracking and easy top-ups via the app
- Smart activation, your plan starts when you land
- Supports hotspot and tethering for laptops or tablets
- Quick installation with QR code or app setup
- 10% discount on your first purchase with our code NOMADWISE
Saily: best for privacy, security, and affordable short-term plans
Saily is developed by the team behind NordVPN, making it a strong choice for travellers who value privacy and security while abroad. It offers simple setup, responsive 24/7 support, and cashback credits on every purchase. With smaller plans starting at just US$3.99, it’s ideal for short trips or light data users.
Why Saily works well in Australia:
- 1–20 GB prepaid plans and a 30-day unlimited option
- Reliable 4G/5G coverage on major local networks
- Secure browsing with built-in privacy protection
- 3–15% cashback in Saily credits for future purchases
- 24/7 live chat support via the app
- Fast QR code or app-based activation
Both Ubigi and Saily make it easy to stay online across Australia. Ubigi suits longer stays and heavy data use, while Saily offers great value, strong privacy features, and flexible smaller plans.
👉 To explore other options, see our Australia eSIM provider directory.
How to choose the right eSIM for Australia
The right eSIM for Australia depends on your trip length, data usage, and where you plan to travel. Before buying, check which networks each provider connects to and make sure your device supports eSIM functionality.
Key things to consider when choosing your eSIM:
- Trip length: Short visits often need 1–10 GB plans, while longer stays benefit from 30-day or unlimited options.
- Data usage: Estimate how much you’ll use for navigation, remote work, or streaming to avoid running out early.
- Coverage area: Look for plans that connect to strong national networks such as Optus, Telstra, or Vodafone for wide reach.
- Device compatibility: Most modern iPhones and Android devices support eSIM, but it’s best to double-check in your settings.
- Customer support: Choose a provider that offers responsive help if you need assistance while travelling.
From the beaches of Sydney to the vineyards of South Australia and the national parks around Cairns, a well-chosen eSIM ensures smooth connectivity wherever your trip takes you.
How to set up an eSIM in Australia
Setting up an eSIM in Australia only takes a few minutes. You can install it before your flight or once you’ve landed, and your phone will connect automatically to a local network.
Follow these steps:
- Check compatibility: Confirm your device supports eSIM in the settings menu under “Mobile Network” or “SIM Manager.”
- Choose your provider: Select an eSIM plan that suits your data needs from Ubigi, Saily, or another trusted provider.
- Purchase your plan: Complete the payment and receive a QR code or activation link by email or in the app.
- Install your eSIM: Scan the QR code or follow the in-app instructions to add the eSIM profile.
- Activate mobile data: Turn on the eSIM in your settings and ensure data roaming is enabled for Australia.
You’ll be connected within minutes, ready to use maps, messages, and apps across Australia.
💡 Tip: Remove any expired eSIMs before installation and give your new one a clear name like “Australia – Ubigi” or “Australia – Saily” to avoid confusion.
Final recommendation: Which eSIM is best for Australia?
Both Ubigi and Saily make it easy to stay connected while travelling around Australia. Your choice depends mainly on how long you’re staying and how much data you need.
👉 Choose Ubigi if you want flexible plans, strong nationwide 4G/5G coverage on Optus, and reliable long-term connectivity for work or extended trips.
👉 Choose Saily if you value privacy, extra security, and affordable short-term plans with cashback credits.
Whichever you pick, you’ll have instant access to mobile data from the moment you arrive, ideal for navigating cities, booking transport, and working remotely.
For more travel essentials, check our Digital Nomad Insurance Guide for Australia.
