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Unlimited data? Nomad
Bottom line: Switzerland is inside Schengen but outside the EU roaming zone, so the “roam like at home” allowance on an EU SIM does not follow you across the border — the European Commission’s scheme covers the 27 EU states plus Iceland, Liechtenstein, Norway and, since 1 January 2026, Ukraine and Moldova, and Switzerland is on none of those lists. That leaves two realistic options: a travel eSIM bought before departure, or Swiss prepaid. The local benchmark to beat is Swisscom’s tourist product, Prepaid Flat 7 at CHF 20 for seven days of unlimited domestic data capped at 50 Mbit/s, rising to CHF 150 for 90 days. The network underneath is not the constraint: by the end of 2025 Swisscom reached 99% of the population with 5G and Sunrise over 99%, per the Federal Communications Commission’s 2025 activity report. On entry, the Schengen 90-days-in-180 rule applies, the Entry/Exit System has been rolling out since 12 October 2025, and ETIAS is expected in the final quarter of 2026 at €20.
This page was rebuilt in August 2026 from primary documents: the Federal Communications Commission (ComCom) activity report, the Federal Office of Communications, the operators’ own published tariffs, the State Secretariat for Migration’s entry guidance, and the European Commission’s roaming policy pages. Every number below carries the date it refers to, because Swiss mobile pricing moved in 2025 and the Schengen entry procedures are mid-change.
The border where your EU data plan stops
This is the single most expensive misunderstanding travellers bring to Switzerland, and it is worth stating precisely. The EU’s roaming rules run on Regulation (EU) 2022/612, and the Commission describes the scheme as applying “in any of the 27 EU countries, as well as Iceland, Liechtenstein, Norway, Ukraine and Moldova” — the last two added on 1 January 2026. Switzerland appears nowhere in that list. It is a Schengen member and it is surrounded on all sides by the roaming zone, which is exactly why people assume it is included.
The practical consequence: a German, French or Italian SIM that works without surcharge in the neighbouring country falls onto commercial out-of-zone roaming rates the moment it registers on a Swiss network. Some operators voluntarily bundle Switzerland into their European zone — many do not. The check takes two minutes on your operator’s tariff page before you leave, and it is the check most people skip.
The same logic runs in reverse: a Swiss prepaid card is not a cheap way to cover a wider European trip. Salt’s published PrePay tariffs price a Europe roaming pack at CHF 14.95 for 5 GB over one week, or CHF 29.95 for 20 GB over a month — reasonable, but a separate purchase on top of your domestic data, not an inclusion. If Switzerland is one leg of a multi-country itinerary, the arithmetic usually favours a regional travel eSIM that treats the whole route as one zone.
The network you will actually be roaming on
Whatever eSIM you buy, it attaches to one of three Swiss networks. Their published coverage and measured performance, from the Federal Communications Commission’s 2025 activity report, are as follows.
| Operator | Mobile customers (end 2025) | Market share (end 2024) | Published 5G population coverage |
|---|---|---|---|
| Swisscom | 6,438,000 (+1.7% year on year) | 53.1% | 99% with 5G up to 1 Gbps; 88% with 5G+ up to 2 Gbps |
| Sunrise | 3,159,000 (+0.9%) | 23.6% | over 99% with 5G basic and standalone; 79% with 5G broadband up to 2 Gbps |
| Salt | 2,254,000 (+6.3%) | 17.7% | 99.9% across all generations; up to 750 Mbps on 4G+/5G, 1.7 Gbps where 5G+ is available |
Two structural points matter for a visitor. First, Swiss mobile is saturated — ComCom records a mobile penetration rate of 131.7% at the end of 2024, with growth of 3.2% between 2023 and 2024 — so operators compete on quality rather than on adding subscribers. Second, the old-generation fallbacks are gone: Sunrise switched off its 3G network in mid-2025 and Swisscom has ceased 3G operation, so a handset that cannot do 4G will not find a network. Sunrise became the first Swiss operator to offer 5G standalone in spring 2025.
On measured speed rather than claimed coverage, ComCom cites Ookla’s Speedtest Connectivity Report for Switzerland covering the first half of 2025: technology-independent download averages of 133.8 Mbps on Swisscom, 98.9 Mbps on Salt and 85.75 Mbps on Sunrise, and on 5G specifically 178.25, 120.1 and 111.3 Mbps. In Ookla’s Speedtest Global Index published in December 2025, Switzerland ranked 36th of 103 countries at 126.25 Mbps in November 2025, up sharply from 97.7 Mbps in December 2024; Zurich placed 45th among major cities at 158 Mbps and Geneva 76th at 111.5 Mbps. Opensignal’s Global Network Excellence Index of October 2025 put Switzerland 16th of 137 markets, with 4G/5G availability of 96.5% and average 4G and 5G speeds of 59.2 and 195 Mbps.
Read those two paragraphs together and the honest conclusion is that the choice of host network barely moves the outcome for ordinary travel use. The German trade magazine connect, whose 2026 cross-border test ComCom summarises, rated all three Swiss operators “outstanding” and noted that the differences between them keep shrinking. Where Switzerland does still bite is topography — valley floors, rail tunnels and cable-car ascents — and that is a physics problem no eSIM brand solves.
Coverage at a specific address can be checked before you travel on the federal Broadband Atlas maintained by the Federal Office of Communications, which from its June 2026 update narrowed its methodology to count only buildings containing residential or business units.
Swiss prepaid, priced from the operators’ own pages
A travel eSIM is only worth buying if it beats what you can get on arrival, so here is what you would actually be paying locally, taken from the operators’ current published tariffs rather than from a comparison blog.
Swisscom Prepaid Flat, the product Swisscom markets specifically at tourists, is sold as an eSIM and comes in four durations: CHF 20 for 7 days, CHF 40 for 15 days, CHF 65 for 30 days and CHF 150 for 90 days. Each includes unlimited domestic data at a 50 Mbit/s download ceiling, unlimited calls within Switzerland and unlimited texting, with no roaming charge inside the country. Activation runs through the My Swisscom account with two-factor authentication, and the plan starts counting only once the eSIM connects to the network — which means you can buy it before you fly without burning days.
Salt PrePay is the pay-as-you-go alternative: the SIM is free with CHF 10 of credit included, domestic calls are charged at 0.49 per call for up to 60 minutes and SMS at 0.12. Data is bought in packs — CHF 9.95 for 1 GB, CHF 14.95 for 5 GB, CHF 29.95 for 25 GB — or as unlimited daily surfing at CHF 1.99 per day. For a traveller on the ground for three or four days, that CHF 1.99 day rate is the cheapest honest number on this page.
For context on how Swiss mobile pricing sits generally, ComCom reproduces OFCOM’s basket comparison for 2025: the best light-use offer (30 calls, 500 MB) was CHF 11.90 a month at M-Budget against CHF 23 at Swisscom; for medium use (100 calls, 2 GB) Salt’s CHF 14.90 was almost 2.7 times cheaper than Swisscom’s CHF 39.90; and for heavy use (unlimited calls, 20 GB) the gap was CHF 23 at Salt against CHF 50 at Swisscom. The Federal Statistical Office’s consumer price index for telecommunications rose 0.9% between 2024 and 2025 — with the mobile component up 2.2% — against average inflation of 0.2%, so Swiss mobile got relatively more expensive last year, not less.
The decision rule that falls out of these numbers: for stays under about a week where you mainly need maps, messaging and transport apps, a travel eSIM bought before departure is usually cheaper and always less friction than queueing at an airport counter. For a month or more, or if you need a Swiss number for local calls and delivery confirmations, Swisscom’s 30-day or 90-day flat rate is the stronger buy. Anything in between is close enough that convenience decides it.
Identity registration is not optional
Switzerland registers mobile subscribers. Prepaid cards are not sold anonymously, and the requirement is not a shop policy you can shop around — it is a legal obligation on the provider under the federal framework for surveillance of post and telecommunications traffic. In practice this means a passport at the counter for a physical SIM, or an identity step inside the operator’s account flow for an eSIM; Swisscom’s tourist product routes it through My Swisscom with two-factor authentication.
This is a real argument for buying a travel eSIM before you arrive, and it is rarely stated plainly. An international travel eSIM registers you with the issuer in your own country under its own terms and attaches to the Swiss network as inbound roaming, so you skip the local identification step entirely. If you land late, if your German is limited, or if you simply do not want to hand over passport details at a station kiosk, that is the practical difference between the two routes — not the price.
Getting in: Schengen rules that are mid-change
Switzerland has been in the Schengen area since 2008 and the common rules apply in full. The State Secretariat for Migration states that “all stays within the Schengen area may not exceed 90 days within any 180-day period” and that the allowance “may be used for a single uninterrupted stay or for multiple short stays”. At the border, third-country nationals are expected to show a travel document recognised by Switzerland and valid for at least three months beyond the intended departure, proof of the purpose of the stay, and evidence of sufficient means — the stated benchmark is CHF 100 per day.
Two procedural changes are in flight. The Entry/Exit System, which replaces passport stamping with biometric registration, “has been gradually introduced throughout the Schengen area since October 12, 2025” per SEM. ETIAS, the pre-travel authorisation for visa-exempt nationals, is expected in the final quarter of 2026 at €20 and will generally be valid for three years; SEM’s position is that travellers need take no action until the EU announces the exact start date, which it has committed to doing several months in advance. Check the date against the official source close to departure rather than trusting a page written months earlier — including this one.
The connectivity angle here is concrete rather than abstract: biometric enrolment at first EES crossing adds queueing time at busy land borders and airports, and both ETIAS and EES status checks are done online. Landing with data already working, rather than hunting for airport Wi-Fi to load a confirmation, is the whole argument for installing the profile before you fly.
Check the handset before you buy anything
An eSIM is a software profile downloaded onto an embedded chip under the GSMA’s consumer remote SIM provisioning specification. Two conditions have to hold, and both are checkable in five minutes: the handset must support that specification, and it must not be carrier-locked. The GSMA maintains the specification and the supported-device list. Device-locking is the more common failure — a phone bought on an instalment contract may still be tied to the issuing operator even years later, and the profile download fails at the last step with a generic error.
Download the profile while you are on a connection you trust, at home or in the hotel, not while standing at Zurich airport. The QR code can normally be scanned only once; if it fails mid-download you need the issuer’s support, and that conversation is much easier before you are in transit. Leave the physical SIM in place as a fallback and switch the data line to the eSIM once it registers.
If Switzerland is one stop on a longer route, our country guides for Germany, Austria and Portugal cover the neighbouring regulatory picture, and the English index lists the rest.
FAQ
Does my EU roaming allowance work in Switzerland?
Not by default. The EU scheme under Regulation (EU) 2022/612 covers the 27 EU states plus Iceland, Liechtenstein, Norway and — since 1 January 2026 — Ukraine and Moldova. Switzerland is not in that group. Some operators include Switzerland in their European zone as a commercial decision; check your own tariff page before you rely on it.
Is a travel eSIM cheaper than buying Swiss prepaid?
For short stays, usually yes, and it saves the identification step on arrival. The local floor to compare against is Salt’s unlimited daily data at CHF 1.99 per day and Swisscom’s Prepaid Flat 7 at CHF 20 for a week. Beyond about a month, Swisscom’s CHF 65 for 30 days or CHF 150 for 90 days is hard to beat with a travel product.
Will I get 5G, and how fast is it really?
Almost certainly in populated areas: Swisscom reported 99% 5G population coverage at the end of 2025 and Sunrise over 99%. Measured rather than claimed, Ookla put average Swiss mobile download speed at 126.25 Mbps in November 2025, and Opensignal measured average 5G speed at 195 Mbps in October 2025. Note that Swisscom’s tourist flat rate deliberately caps downloads at 50 Mbit/s, which is far more than maps and video calls need.
Do I need to show a passport for a Swiss SIM?
Yes for a locally issued card, prepaid included — Swiss providers are legally required to identify subscribers. An international travel eSIM avoids this because you are registered with the issuer abroad and appear on the Swiss network as an inbound roamer.
Will my old phone still work on Swiss networks?
Only if it does 4G or better. Sunrise switched off 3G in mid-2025 and Swisscom has ended 3G service, so a 3G-only handset has nothing to attach to. Salt has not announced a 3G shutdown date, but planning around that is not sensible for a trip.
How much data should I budget for a week?
For navigation, messaging, transport apps and occasional photo uploads, 3–5 GB covers a week comfortably. Video calling home daily pushes that towards 10 GB. If you expect the higher end, compare against Salt’s 25 GB pack at CHF 29.95 or Swisscom’s unlimited 15-day flat at CHF 40 rather than stacking top-ups on a small travel plan.
Sources (primary)
- Federal Communications Commission (ComCom) — Activity report 2025 and facts and figures — the source for operator customer numbers at end-2025, market shares at end-2024, the 131.7% penetration rate, published 5G coverage per operator, the 3G shutdowns, the Ookla and Opensignal measurements and the OFCOM price baskets quoted above.
- Federal Office of Communications (OFCOM) — Broadband Atlas — the federal coverage map, address by address, with the methodology change introduced in the June 2026 update.
- Swisscom — Prepaid Flat for tourists — the operator’s own page for the CHF 20 / 40 / 65 / 150 tiers, the 50 Mbit/s cap, the eSIM delivery route and the activation-on-first-use rule.
- Salt — PrePay tariffs and data packs — published prices for the 1 GB, 5 GB and 25 GB packs, the CHF 1.99 daily unlimited option, domestic call and SMS rates, and the Europe roaming packs.
- State Secretariat for Migration (SEM) — entry FAQ — the 90-in-180 rule as worded by the Swiss authority, the documents required at the border, the CHF 100 per day means test, and the official position on EES (from 12 October 2025) and ETIAS.
- European Commission — roaming policy — the geographic scope of Regulation (EU) 2022/612, which is what excludes Switzerland from “roam like at home”.
- GSMA — eSIM specifications — the consumer remote SIM provisioning standard your handset implements, and the supported-device list.
Editorial note: this page is written from the regulator, operator and government sources listed above rather than from other travel blogs, and every figure is dated so you can verify it before relying on it. Swiss tariffs and Schengen entry procedures both change within a year; the ETIAS start date in particular is not yet fixed. Our sourcing and correction policy is on the about page. Last updated 29 August 2026.
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