Free eSIM for Switzerland 
3 GB of free mobile data across Switzerland and 38 other European countries. Zurich to Zermatt, Geneva to the Jungfrau — your phone stays connected across borders, in mountain valleys and up the cable cars. No SIM swap, no Swisscom store detour, no card charge.
Free for new users · Credit card for identity verification only — never charged · Valid 3 days
Why an eSIM beats a Swiss prepaid SIM
Switzerland is outside the EU — so roaming from a neighbouring French, Italian or German SIM costs extra, and your home carrier often treats it as a premium zone (€15+ per day for US plans). Swisscom's tourist SIM costs CHF 19.90 for 2 GB valid 30 days — not outrageous but still a trip to the store at the airport. A 99esim activates on descent into Zurich and covers the drive up to Grindelwald without swapping profiles.
- No Swiss-franc prepaid top-up required — pay in euros through the app
- Seamless across German, French and Italian cantons
- Works in mountain villages where foreign roaming often fails
- 3 GB is enough for a long weekend in the Alps or a Zurich business trip
How Swiss networks treat 99esim
99esim partners with Swisscom — the incumbent and still the only operator with genuine 99% geographic coverage. Their network reaches alpine huts, ski lifts and the Glacier Express route. 5G is lit in 900+ municipalities including every ski resort of note. Sunrise and Salt cover urban areas well but thin out in alpine valleys, so Swisscom is the one you want for Switzerland specifically.
Arriving at a Swiss airport
All three international airports have full 5G at gates and baggage claim. Activate before boarding — Swisscom latches on immediately, which matters because Swiss airport wi-fi is time-limited and the SBB ticket machines only accept Swiss cards.
Largest Swiss airport. SBB train from Zurich Airport to Hauptbahnhof (10 min, every 10 minutes) has full signal through the tunnel. Your eSIM has you booked into SBB Mobile before the train leaves.
Right on the French border. Train to Geneva Cornavin (7 min) keeps signal intact. Free TPG ticket at the baggage claim kiosk if staying in Geneva.
Tri-national airport (CH/DE/FR). Use the Swiss exit for Basel SBB. Bus 50 to the station keeps signal on the French approach road — but your phone may briefly latch onto a French network at the border.
Small regional airport. Bus 334 to Bern Belp station and train to the capital — 4G is steady the whole route through the valley.
Italian-speaking Ticino's hub. Bus to Lugano station (15 min) has full signal. Swisscom's coverage is strong across the Ceresio lake area.
Where your free eSIM works best
What 3 GB actually gets you in Switzerland
Swiss trips mix SBB Mobile for trains, Swiss Meteo for mountain forecasts and lots of photos. A realistic breakdown:
Switzerland-specific travel tips
Switzerland is not in the EU roaming zone
That's why neighbouring-country SIMs get expensive here. Your 99esim includes Switzerland in the same 39-country plan though — no border surcharge when you cross from Italy at Chiasso or from Germany at Basel.
Gotthard and Lötschberg tunnels
The Gotthard base tunnel (57 km, the world's longest) has trackside DAS — signal holds through the whole crossing. The old Gotthard rail tunnel is partially covered. Lötschberg and Simplon tunnels are mostly dark — use the offline SBB timetable.
Ski resort coverage is excellent
Swisscom invested heavily in ski-area 5G after 2020 — Zermatt, Verbier, Davos, Arosa, St. Moritz all have full signal on the lift system and at altitude. Even the top of the Matterhorn Glacier Paradise has LTE.
Liechtenstein works on the same eSIM
The Principality of Liechtenstein is in Switzerland's mobile economic area — your 99esim roams onto Swisscom or Salt FL without extra charge. Vaduz and Malbun are fully covered.
Alpine hut data is limited
SAC huts above 2,500m sometimes get satellite-only service. Don't plan to upload a 4K drone video from Monte Rosa — queue uploads for when you're back in the valley or at the cable car base.
Travelers who used 99esim in Switzerland
"Skied Zermatt for a week — the eSIM worked on every lift, even on Klein Matterhorn at 3,883m. Better than my home SIM roaming."
"Took the Glacier Express from Zermatt to St. Moritz. Signal held through most of the valleys; only the Furka tunnel dropped."
"Drove from Basel to Lugano through the Gotthard tunnel. Phone stayed connected the whole way — useful for SBB-style live traffic."
Frequently asked — Switzerland edition
Does the free eSIM work in the Swiss Alps?
Yes. Swisscom covers every ski resort of significance and all major valleys. Coverage thins above 3,000m on glaciers and in remote hiking areas like the Aletsch ice trail. For alpine tours, download offline maps as a fallback — your eSIM will reconnect near the cable car stations.
Will it work on the Glacier Express or Bernina Express?
Yes, largely. The Glacier Express route (Zermatt to St. Moritz, 8 hours) has steady 4G in the valleys and drops in the longer tunnels like the Furka Base Tunnel. The Bernina Express crosses into Italy briefly — your eSIM switches seamlessly onto TIM when that happens.
Does it work in Liechtenstein?
Yes. Liechtenstein is covered as part of the Swiss economic area — Vaduz, Schaan, Malbun and the rest of the principality connect to Salt FL or Swisscom FL with no roaming charge added.
Is 5G included in the free plan?
Yes. Switzerland has one of Europe's densest 5G networks and the free 99esim plan uses it automatically when your device supports it. 5G is live in 900+ municipalities.
Can I use the eSIM to cross from Italy or Germany?
Yes, border crossings are seamless. The 99esim profile covers Italy, Germany, France, Austria and Switzerland on the same plan — no profile swapping at Chiasso, Basel or Buchs. Your phone transitions towers automatically.
What if I run out of 3 GB?
Top up instantly in the 99esim app — Switzerland-specific add-ons start at CHF 3.49 (about €3.50) for 1 GB. No auto-renewal, no stored-card drama, no CHF currency conversion fees on your bank card.
Free eSIM in other European countries
Your 3 GB works in all 39 countries. Here are a few more popular destinations:
See all 39 countries →
Ready to claim your free 3 GB in Switzerland?
Install the 99esim app, create a free account, and your data is live in about 90 seconds.