This is the single most common and most expensive mistake in European travel data. Someone buys a "Europe 30 countries" plan for a trip through France, Italy and Switzerland, lands in Zurich, and has nothing.
Why Switzerland is left out
Switzerland is not a member of the European Union, and it is not in the European Economic Area either. The EU rules that make roaming between member states cheap simply do not apply to Swiss networks.
So when a reseller buys wholesale capacity for a Europe bundle, Switzerland is priced separately and often left out of the cheaper bundles. The region name on the plan does not tell you. The coverage list does.
Liechtenstein usually travels with Switzerland in these lists, for the same reason.
How to check, in thirty seconds
Open the plan page and find the country list. Look for the word Switzerland in it.
- If it is there, you are fine.
- If it is not, buy a Switzerland plan for that leg, or accept you will be on hotel Wi-Fi.
- If the page only says "30 countries" and does not list them, treat that as a no and ask before you buy.
The number in a plan name is a count, not a promise about which countries. Thirty countries that do not include the one you are standing in is worth nothing.
The itineraries where this bites
- Zurich or Geneva as the flight hub for a trip that is "mostly France" or "mostly Italy".
- The Milan–Zurich or Munich–Zurich train, where you cross from a covered country into an uncovered one mid-journey.
- Interlaken, Zermatt, Lucerne, the Jungfrau region — classic add-ons to a wider Europe trip.
- Driving the Alps, where you can cross into and out of Switzerland several times in a day on the passes.
If a trip is only two or three days in Switzerland bolted onto a longer European route, the clean answer is one Europe plan plus a short Switzerland plan. Two installs, no gap.
Where Swiss coverage drops
Switzerland has unusually good mobile coverage for a mountain country — Swisscom, Sunrise and Salt cover the valleys, the lakes and the main rail lines well. But terrain is terrain:
- High passes (Furka, Grimsel, Susten, Gotthard over the top): expect stretches with nothing.
- Road and rail tunnels, of which Switzerland has a great many, including very long ones.
- Hiking trails above the treeline away from the lift stations.
- Narrow side valleys where the mountain sits between you and the tower.
Download offline maps for any hiking or driving day. The SBB and lift timetables are worth having cached too.
How much data
- Towns, trains, maps and messaging: 2 GB a day.
- Moving every day with constant timetable and route checks: 3 GB a day.
- Tethering, or uploading the photos the same evening: 5 GB a day or more.
Swiss hotel and train Wi-Fi is common and generally decent, which pulls real usage down. Where a plan slows after its high-speed allowance, maps and chat stay usable and video does not — choose a figure that keeps you above it.
No Swiss number
Data only, no Swiss line. Mostly harmless here, with two exceptions: some mountain huts confirm bookings by phone rather than email, and a few parking and ticket machines send an SMS receipt. Give a number you can actually receive on, and keep your home line switched on with its data off.
Emergency numbers — 112, or 1414 for mountain rescue — work on any network without a data plan.