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Official Languages: Slovak

English Is Widely Spoken in Bratislava, Košice, the Tatras and by Most People under Forty, and Hotel and Restaurant Staff Switch to It Unasked. It Thins Out in Villages, Where German Helps near the Austrian Border and Hungarian Is Everyday Speech across the South. Czech Is Understood Everywhere

Mobile Network: 4G Reaches Almost the Whole Population and 5G Now Covers Most of It, Including the Main Valleys and Motorway Corridors. The 3G Networks Were Retired between 2023 and 2025, so a Phone without 4G and VoLTE Drops to 2G and Will Be Too Slow for Anything but Calls. Signal Fades in the High Valleys and Deep Forest

Roaming/SIM/eSIM: If You Are Travelling from Another EU or EEA Country, Your Home Data Allowance Works in Slovakia at No Extra Charge under EU Roaming Rules, within Fair Use Limits, and There Is Nothing to Arrange. From outside the EU, an eSIM Is the Fastest Route Because It Activates before You Land and Needs No Shop Visit and No Registration. A Local Physical SIM Can Still Win on a Long Stay, or When You Want a Slovak Number for Booking Huts and Taxis

Cards and Contactless Work Almost Everywhere, Including on Bratislava Public Transport, Where Tapping a Bank Card on the Reader Buys the Ticket. Cash Is Still Worth Carrying — Twenty or Thirty Euros Covers Mountain Huts, Village Shops, Parking Machines and Public Toilets, and the Right to Pay in Cash Is Written into the Constitution

Tipping Is Normal but Modest. Around 10 Percent Is the Usual Thanks for Good Table Service, and Simply Rounding the Total Is Just as Acceptable — Slovaks Tip by Telling the Server the Amount They Want to Pay Rather than Leaving Coins on the Table. Saying Ďakujem as You Pay Reads as Keep the Change, so Say It Only When You Mean It. Taxi Drivers Expect the Fare Rounded to the Next Euro, and a Service Charge Is Rare

Plug Type: Type C and Type E

Voltage: 230 V, 50 Hz

Adapter: Sockets Take the Round-Pin Type C and the Earthed Type E, the Same as France, so Visitors from the UK, Ireland, Switzerland, Italy and Most of Asia and the Americas Need an Adapter. Phone and Laptop Chargers Rated 100 to 240 V Work as They Are, but a 110 V Hairdryer or Kettle Will Not