Sims, e-Sims, and
Travel Data
Stay Connected Wherever Your Travels Take You
Staying connected while travelling overseas has become almost as important as remembering your passport. From accessing Google Maps and checking flight information to messaging family, making restaurant reservations or ordering a rideshare, reliable mobile data can make travelling considerably easier.
At Valhalla Travel, we can help you find suitable international eSIMs, travel SIM cards and overseas mobile data plans for your journey, taking into consideration the countries you are visiting, the length of your trip, your device and how you expect to use your phone while away.
For many travellers, an eSIM for international travel is now one of the simplest options. Instead of removing your Australian SIM card and replacing it with a physical card when you arrive, an eSIM can be installed digitally on compatible smartphones and other devices. This means you can prepare your mobile data before departure and, depending on the plan selected, connect when you reach your destination.
Valhalla Travel works with approved suppliers including Saily and OneSimCard, giving our clients access to connectivity solutions covering destinations around the world.
Saily offers prepaid eSIM data plans across more than 200 destinations, including individual country, regional and global options. This can be particularly useful for a multi-country holiday through Europe or Asia, where one regional data plan may cover several destinations.
OneSimCard provides both reusable international eSIMs and traditional physical travel SIM cards, with coverage across more than 200 countries and destinations. Depending on the product selected, options can include mobile data, voice and SMS services, making it worth considering for travellers who require more than data alone.
Most importantly, there is no single solution that suits every traveller. Someone spending two weeks in Japan may need something very different from a client travelling through ten European countries, taking a six-week journey through Asia or embarking on a round-the-world itinerary.
Our consultants can help you understand the available options and point you towards an appropriate solution for your itinerary and compatible device.
Rather than arriving overseas and immediately searching for airport Wi-Fi or worrying about unexpected international roaming charges, organise your connectivity before you leave.
Visit OneSimCard to shop their range of
calling and data plans around the world.
OneSimCard
Saily
Visit Saily to shop their range of
calling and data plans around the world.
Stay Connected From the Moment You Arrive
Tell us where you're travelling and what device you're taking, and we'll help you explore the eSIM, SIM card and international data options available for your journey.
Sims, e-Sims, and Travel Data FAQs
1. What is an eSIM, and how does it work when travelling overseas?
An eSIM (embedded SIM) is a digital SIM that allows you to activate a mobile data plan without inserting a physical SIM card into your phone. It is an increasingly popular option for international travellers who want convenient access to mobile data without paying expensive international roaming charges through their regular mobile provider.
Before leaving Australia, you can purchase and install a travel eSIM from a provider such as Saily or OneSimCard, provided your device is compatible. Once you arrive at your destination, you can activate the appropriate settings and connect to a supported local mobile network.
Many international eSIM plans offer coverage across multiple countries, making them particularly useful for European holidays, Asian adventures and complex multi-destination itineraries.
At Valhalla Travel, our consultants can help you explore suitable eSIM options based on your destinations, travel dates and mobile data requirements.
2. Can I use an international eSIM and keep my Australian mobile number?
Yes, in many cases you can continue using your existing Australian mobile number while accessing overseas mobile data through a travel eSIM.
Many modern smartphones support Dual SIM functionality, allowing your Australian SIM and international eSIM to remain installed simultaneously. This means you may be able to receive calls or SMS messages on your regular number while using the travel eSIM for internet access.
Applications such as WhatsApp can generally continue operating with your existing phone number, even when your mobile data connection is provided by a different SIM.
However, receiving or making calls and sending SMS messages through your Australian provider may still attract international roaming charges. It is important to check your provider's roaming conditions and configure your phone correctly before departure.
Valhalla Travel can help you understand the available options and direct you towards international eSIM and SIM card providers suited to your needs.
3. Is an international eSIM cheaper than using mobile roaming overseas?
An international travel eSIM can often be more economical than traditional international roaming, particularly when travelling for several weeks or visiting multiple destinations.
Many travel eSIM providers offer prepaid data packages, allowing you to select an appropriate data allowance and duration before departure. This can help you manage your spending and reduce the risk of unexpected roaming charges.
For example, someone travelling through France, Italy, Switzerland and Germany may benefit from a regional European eSIM rather than purchasing separate mobile data plans in each country.
Saily offers country-specific, regional and global eSIM packages, while OneSimCard provides international connectivity solutions including eSIMs and physical SIM cards.
Prices, coverage, allowances and validity periods differ between suppliers, so comparing the available plans is worthwhile.
At Valhalla Travel, we can recommend options suited to your itinerary, helping you stay connected without unnecessarily increasing your holiday expenses.
4. Will my mobile phone work with an eSIM in every country?
Not every mobile phone supports eSIM technology, and international eSIM coverage varies between destinations, networks and suppliers.
Many newer Apple iPhone, Samsung Galaxy and Google Pixel devices support eSIMs, but compatibility depends on the specific model, its country of purchase and whether the device is network-unlocked.
Before purchasing an international eSIM, you should confirm that your device supports the technology and that your selected provider offers coverage in every country you intend to visit.
This is particularly important for travellers visiting multiple countries, remote destinations or regions where mobile network coverage may be limited.
If your device does not support eSIM technology, a physical international travel SIM card may be a practical alternative.
Valhalla Travel works with approved suppliers including Saily and OneSimCard and can help you identify suitable connectivity options for your travels. Always check the provider's current device compatibility and destination coverage before purchasing.
5. How much mobile data do I need for an overseas holiday?
The amount of international mobile data you need depends on the length of your holiday and how you intend to use your smartphone while travelling.
Travellers who primarily use their phones for Google Maps, messaging, emails and occasional internet browsing will generally require less data than those regularly streaming videos, uploading photos, making video calls or using their mobile hotspot.
As a general guide, light users might find 3–5GB sufficient for a short holiday, while travellers who rely heavily on mobile connectivity may prefer 10–20GB or more. These are indicative allowances rather than guarantees, and your actual usage may differ significantly.
Access to hotel Wi-Fi can also reduce your mobile data requirements, although public Wi-Fi should be used with appropriate security precautions.
For longer journeys or multi-country itineraries, regional or global eSIM packages may provide greater convenience.
At Valhalla Travel, we can help you compare international eSIMs, physical SIM cards and mobile data plans through suppliers such as Saily and OneSimCard, so you can select a solution that suits your travel style and budget.
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