Switzerland Mobile Networks & Coverage Guide
Swiss mobile networks: the honest version
There are three networks in Switzerland. One is clearly the best, one is solid, and one is a waste of money for tourists.
Swisscom, the one that actually works everywhere
Swisscom is the largest network and the only one that consistently works in mountain areas, on trains, and in rural valleys. Opensignal’s March 2025 report gave them “Best Network” overall and top marks for Coverage Experience.
If you’re doing anything outside Zurich, Geneva, and Bern (hiking, scenic trains, driving through passes) Swisscom is the only network worth trusting. The others will drop out in exactly the places where you most want a working phone.
- 4G: Near-universal coverage
- 5G: Major cities, expanding
- Tourist eSIM speed cap: 50 Mbit/s (more than enough)
Sunrise, fine for cities, decent for Europe
Sunrise is the number two network. Excellent coverage in urban areas, solid 5G rollout, and the standout feature: their travel eSIM includes 46 European countries alongside Switzerland.
If you’re staying in cities, Sunrise is perfectly good. If you’re crossing borders, it’s actually the better choice. But it can’t match Swisscom in the Alps or on regional train routes.
- 4G: Very good in urban areas, some gaps in mountains
- 5G: Strong in Zurich, Geneva, Basel, Bern
- Advantage: Multi-country roaming
Salt, don’t bother
Salt is the cheapest network for Swiss residents. For tourists, it’s terrible. The coverage is the weakest of the three (noticeably worse in mountains), and they charge CHF 59 just for the eSIM. Swisscom gives you a full week of unlimited everything for CHF 20. There is no math that makes Salt worth it.
Which network does your eSIM use?
This matters more than most people realize. A “Switzerland eSIM” from Airalo on Sunrise will perform very differently from a Swisscom tourist eSIM if you’re on the Glacier Express.
| Provider | Network | Good enough for mountains? |
|---|---|---|
| Swisscom tourist eSIM | Swisscom | Yes, best option |
| Holafly | Swisscom / Sunrise / Salt | Mostly yes (uses multiple) |
| Saily | Varies by plan | Check before buying |
| Nomad | Varies by plan | Check before buying |
| Sunrise travel eSIM | Sunrise | Cities yes, mountains sometimes |
| Airalo | Varies by plan | Check before buying |
| Salt | Salt | No |
If your eSIM provider says "varies by plan," check which network you'll actually be on before purchasing. Contact their support or look at the plan details. The network matters more than the price in Switzerland.
Coverage by region
| Region | Swisscom | Sunrise | Salt |
|---|---|---|---|
| Zurich | Excellent | Excellent | Good |
| Geneva | Excellent | Excellent | Good |
| Bern | Excellent | Excellent | Good |
| Basel | Excellent | Excellent | Good |
| Interlaken / Jungfrau | Excellent | Good | Fair |
| Zermatt / Matterhorn | Good | Fair | Poor |
| Engadin / St. Moritz | Good | Fair | Poor |
| Main train routes | Excellent | Good | Fair |
| Scenic train routes | Good | Fair | Poor |
| Ticino (Lugano) | Excellent | Good | Good |
The pattern is clear: in cities they’re all fine. The moment you leave, Swisscom pulls ahead and the gap keeps widening.
What speeds to expect
- 4G in cities: 30-100 Mbit/s on all networks
- 4G in rural areas: 10-30 Mbit/s on Swisscom, 5-20 Mbit/s on Sunrise, spotty on Salt
- 5G (cities only): 200-500 Mbit/s
- Swisscom tourist eSIM cap: 50 Mbit/s, still faster than you’ll notice
- Holafly “unlimited”: May throttle after heavy daily use (fair-use policy)
50 Mbit/s is fast enough for video calls, streaming, and uploading photos. The speed cap on Swisscom's tourist plan is not a real limitation for any normal use.
The bottom line
- Going to the mountains or taking trains? Get Swisscom. Period.
- Staying in cities? Any network works. Pick on price.
- Crossing borders? Sunrise travel eSIM.
- Considering Salt? Don’t.