If you’ve ever paid for airport Wi-Fi or winced at a roaming charge, a travel eSIM will change how you travel. It’s the simplest way to land in a new country already connected, usually for a fraction of what roaming costs. Here’s exactly how it works and why it saves you money.
What a travel eSIM actually is
An eSIM is a digital SIM built into your phone. A travel eSIM is a data plan for a specific country or region that you load onto that digital SIM before or during your trip. Because your phone can hold several eSIM profiles at once, you keep your Swiss number active and simply add local data on top. No plastic card, no swapping, no kiosk hunt at arrivals.
Why it’s cheaper than roaming
Roaming bills you at your home provider’s foreign rates, which can be steep. A travel eSIM instead gives you local data rates in the country you’re visiting, sold as a clear, upfront package. You know the price before you travel, there are no surprise overage charges, and you only pay for the days you’re away. For most trips that’s dramatically less than roaming — often the difference between a few francs and a few hundred.
It also beats buying a physical local SIM on arrival: no queueing, no language barrier at a counter, no losing your home SIM in the process. You set everything up from your sofa with our travel eSIMs.
How to set one up (in about two minutes)
- Check your phone supports eSIM. Most phones from the last few years do.
- Choose your plan. A single country for a focused trip, or a region for multi-country travel.
- Install it. Scan the QR code or tap to add the plan while on Wi-Fi.
- Switch it on when you land and set it as your data line.
That’s the whole process. Many travellers install the eSIM the night before they fly and simply toggle it on after landing.
Single-country vs regional plans
Pick based on your itinerary. A single-country eSIM is the cheapest option when you’re staying put — ideal for a beach week or a city break. A regional plan makes sense when you’ll cross borders. Heading across Asia with stops in Thailand and beyond? An Asia eSIM covers the whole journey on one package. Hopping around the continent? A Europe eSIM does the same. And if you’re a true globetrotter visiting several continents, a Global eSIM keeps one plan running everywhere.
Keeping your home number
A common worry is “will I lose my Swiss number?” You won’t. The travel eSIM is a separate line. Your home number stays on your phone to receive calls and texts (handy for two-factor codes), while your data runs over the cheap local plan. You’re reachable and connected at the same time.
Tips to get the most from it
- Install before you fly so setup happens on reliable Wi-Fi.
- Turn off roaming on your home line to avoid accidental charges.
- Download offline maps for your destination in advance.
- Pick the right size — a daily allowance for short trips, a bigger bundle for longer stays.
Who benefits most?
Honestly, almost everyone who leaves the country. Holidaymakers avoid bill shock. Business travellers stay reachable the moment they land. Digital nomads keep working across borders. Even a weekend away is smoother when maps, ride apps and messaging just work from the gate. Pair a travel eSIM with a flexible home plan and your connectivity is sorted both at home and abroad.
The bottom line
A travel eSIM turns “how do I get online here?” into a non-question. It’s cheaper than roaming, faster than buying a local SIM, and it lets you keep your own number while you’re away. Set it up once and you’ll never travel any other way. Start with our travel eSIM range, or learn more about flexible mobile at Extrafon.