Power & Connectivity (SIM)

Slovakia uses 230V / 50Hz with Type C and Type E sockets (European two round pins; Type E has a grounding pin). Type C plugs also fit. Bring a Type C/E adapter; travellers from 100–120V countries need a converter for devices that are not dual-voltage.

The main operators are Orange, O2, Telekom (Slovak Telekom) and 4ka, with good nationwide 4G/5G. Prepaid SIMs are sold at operator shops and require a passport for registration. EU visitors can use their home plan at no extra cost ("roam like at home").

eSIM travel plans (Airalo, Holafly and similar, running on local networks) are a convenient option: buy one online before arrival and install it in minutes, with no physical SIM or shop visit. EU visitors may simply use home roaming instead.

Wi-Fi is widely available in hotels, cafés and at the airport, and connectivity is good in urban areas like Bratislava and Košice. Use a VPN on public networks for sensitive tasks like banking.

Slovakia has an open internet with no significant restrictions. All standard apps and services — messaging, social media, maps and streaming — work normally.

Handy apps include IDS BK / DPB for Bratislava public transport, ZSSK for national rail tickets, parking apps, ride-hailing (Bolt is the main option, Uber in parts), plus maps and translation. Contactless payment apps such as Apple Pay and Google Pay are widely accepted.

Slovakia's country code is +421 and the EU-wide emergency number is 112. App-based calls (WhatsApp, FaceTime and similar) are common, and EU roaming lets EU visitors call normally. Save numbers in full +421 format so they work from any network.