One of the questions I hear most often from clients — right up there with “which cruise line is best for the Mediterranean?” — is something along the lines of: “How do I stay in touch with the family when I’m away?”
It’s a completely reasonable concern. You want to be reachable for the people back home who matter to you. You need access to your booking confirmations, hotel addresses, and maps when you’re navigating an unfamiliar city. And in an emergency — whether that’s a missed connection or something more serious — being able to reach someone quickly is not a luxury, it’s a necessity.
The good news is that staying connected overseas has never been easier, or more affordable. There are really just a few things worth understanding before you leave, and I’m going to walk you through them here.
Australian Carrier Roaming: Convenient, But Worth Watching
The simplest option for many travellers is to keep using your existing Australian mobile plan while overseas. All three major carriers — Telstra, Optus, and Vodafone — offer international roaming, and the setup couldn’t be more straightforward: you land, you turn your phone on, and it works.
Telstra is Australia’s largest network and offers international day packs currently priced at around $10 per day in a wide range of popular destinations, including the USA, UK, Europe, Japan, and much of Asia. That day pack generally includes a set data allowance alongside your existing Australian calls and texts. The big advantage with Telstra is coverage reliability — particularly in destinations where network quality can vary. You keep your Australian number, which means family and friends can reach you exactly as they normally would.
Optus offers a similar day pass structure, also in the $5–$12 per day range for many destinations, with comparable inclusions. Like Telstra, it’s designed to be easy — activate roaming before you leave, and your phone behaves much as it does at home.
Vodafone (now part of TPG) also provides international roaming day packs with broadly comparable pricing and inclusions across popular travel corridors.
The convenience factor here is real. You don’t need to learn anything new, buy anything in advance, or fiddle with settings. For a short trip of a week or two, roaming day packs are often perfectly sensible.
However, on a longer journey — a month-long European cruise, say, or an extended trip through Southeast Asia — those daily charges add up quickly. Thirty days at $10 a day is $300 before you’ve thought about anything else. That’s worth knowing before you set off.
eSIMs: The Smarter Option for Extended Travel
If you haven’t heard of an eSIM before, don’t let the name put you off — the concept is straightforward. Instead of a physical SIM card you slot into your phone, an eSIM is a digital SIM you download and install before you leave home. No hardware, no swapping cards in a foreign airport, no hunting for a local SIM shop after a long-haul flight.
Most modern smartphones support eSIMs — including iPhones from the XS onwards, and the majority of recent Android flagships from Samsung, Google, and others. If you’re unsure whether your phone is compatible, a quick search for your model name plus “eSIM support” will tell you in seconds.
The process is genuinely simple: you purchase a data plan online, download a QR code, scan it with your phone’s camera, and the eSIM installs itself. You can do the whole thing from your kitchen table the week before departure. Your Australian SIM stays active in the background for calls and texts from home — the eSIM just handles your data while you’re away.
Holafly is one of the most popular eSIM providers among frequent travellers. Their standout feature is unlimited data — you pay a flat fee for the duration of your trip and don’t have to think about running out. They cover a wide range of destinations and tend to be a straightforward choice if data is your primary concern.
Saily is a newer option that’s gaining a strong reputation for competitive pricing and a clean, easy-to-use app. It’s worth comparing their rates for your specific destination, as they can offer excellent value, particularly for popular travel corridors.
Airalo operates as a marketplace where you can compare and purchase eSIMs from multiple providers for almost any destination in the world. It’s a good place to shop around, especially for less-common destinations.
One thing worth noting: eSIMs typically provide data only. They don’t come with a local phone number, which means you can’t make or receive standard phone calls through the eSIM itself. That’s where the next section comes in.
WhatsApp: Your Communication Lifeline Overseas
If there’s one app I’d encourage every traveller to have set up before departure, it’s WhatsApp. Once you have a data connection — whether through an eSIM, your carrier’s roaming plan, or the WiFi on your cruise ship or at your hotel — WhatsApp lets you call, message, and video call your family back home completely free of charge.
It works on both iPhone and Android, it’s easy to use, and it costs nothing beyond the data it consumes. Your family can call you without incurring international call costs on their end, which removes one of the common hesitations people have about reaching out while you’re away. You can share photos of the view from your balcony in Santorini, drop your hotel address to your adult children, or have a proper face-to-face conversation via video — all without touching your phone bill.
WhatsApp works reliably in the vast majority of countries. It’s worth noting that it is restricted or blocked in a small number of destinations, including the UAE, China, and a handful of others, so if your itinerary includes any of those countries it’s worth checking ahead of time and identifying an alternative (such as FaceTime over WiFi for iPhone users).
The one thing I’d suggest before you leave: make sure the people you’ll want to stay in touch with actually have WhatsApp installed on their phones. It takes about two minutes to set up, and having that sorted before departure means you’re not trying to talk someone through downloading an app while you’re twelve time zones away.
Andrew’s Practical Tip
For the majority of my clients, particularly those heading away for more than two weeks, I recommend a combination approach: an eSIM for data, with WhatsApp as your primary tool for keeping in touch. It’s cost-effective, it works almost everywhere, and once it’s set up it genuinely just works in the background without you having to think about it.
If you’re only away for a week and you’d rather not change a thing about how your phone works, your carrier’s roaming day pack is perfectly reasonable — just keep an eye on the daily charge adding up.
And if you’re ever unsure what will work best for your particular trip and itinerary, that’s exactly the kind of thing I love to help with. The planning conversations I have with my clients aren’t just about flights and hotels — they’re about making sure everything runs smoothly from the moment you leave home to the moment you walk back through your own front door.
Andrew Kilroy — Sunraysia Boutique Travel
