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Official Languages: German, French, Italian

German, French and Italian Are the Official Languages at Federal Level, and Romansh Is Official Only in Dealings with Romansh Speakers. Which One You Meet Depends on Where You Are Standing. English Is the Most Used Non-National Language, Spoken Weekly by Roughly 45 Percent of Residents and by Most of the Under-25s

Mobile Network: 4G Reaches Effectively the Whole Population and 5G Covers Almost All of It, with the Gaps Sitting in Deep Alpine Valleys, Long Tunnels and behind the Ridges. 2G Is Long Gone and 3G Was Switched Off across Most of the Country during 2025, so a Handset without VoLTE Can Lose the Ability to Make Calls at All

Roaming/SIM/eSIM: Switzerland Is Not in the EU Roaming Area. Roam Like at Home Covers the EU Plus Iceland, Liechtenstein and Norway, so a Plan That Costs Nothing in Austria Can Meter You the Moment You Cross, Then Works Again in Liechtenstein a Few Kilometres Later. Some Operators Add Switzerland Anyway, Which Is Exactly Why People Are Caught Out, so Check Your Own Tariff. An eSIM Activates before You Land, with No Shop and No ID Check. A Local SIM Wins If You Need a Swiss Number

Cards and Phone Wallets Are Taken Almost Everywhere, Including on Trains and in Mountain Restaurants. Twint Is the App Most Swiss People Actually Pay with and It Needs a Swiss Bank Account, so a Visitor Falls Back to Card or Cash. Many Tourist Businesses Accept Euros but Give Change in Francs at a Rate the Shop Sets, Which Is Rarely in Your Favour

Service Has Been Built into the Listed Price since 1974, so the Number on the Menu Is the Number You Pay and No Terminal Will Prompt You for a Percentage. Rounding Up Is the Local Habit — a 47 Franc Bill Becomes 50, a Taxi Fare Goes to the Next Round Number, and a Couple of Francs Is Plenty for a Porter. Ten Percent Is Generous Rather than Expected, and Nobody Will Chase You

Plug Type: Type C and Type J

Voltage: 230 V, 50 Hz

Adapter: Swiss Sockets Are Type J and Take the Flat Two-Pin Type C Plug That Most European Chargers Use, so a Phone or Laptop Charger Works Unchanged. The Round Earthed Schuko Plug Does Not Fit — Its Pins Are Too Thick and Its Body Too Wide — so Bring a Swiss Adapter for Anything with an Earth Pin