eSIM for Slovakia

Viasimo's Slovakia eSIM starts at $1.59 for 1 GB over 7 days, running on O2 and Orange with 5G where available. Plans last 1 to 180 days, arrive by email in minutes and install from your phone's settings, with no app.

Works everywhere in Slovakia

Banská Bystrica Region
Bratislava Region
Košice Region
Nitra Region
Prešov Region
Trenčín Region
Trnava Region

Select your planIn stock

Duration

Quantity

Unlimited data · 3 Days$6.99

Unlimited data · 3 Days ×1

$6.99

Going to more than one country? See regional plans

Does my phone take an eSIM? Check now

Dial *#06# on your phone. If you see an EID number, your phone takes an eSIM. Most phones sold since 2019 do.

Not sure it works on your phone? Check compatibility

Network

Which networks does the Slovakia eSIM use?

Host networks: O2 / Orange

Your eSIM picks one automatically; you do not choose or switch between them.

Data: 1 GB – 50 GB or unlimited
Validity: 1–180 days
Speed: 4G LTE / 5G
Hotspot / tethering: Supported on most devices
Activation: Starts when you first connect in your destination
Speed management: Roughly 2-3 GB per day at full speed, sometimes less depending on the local carrier, then reduced
Top-ups: Add more data from your account, before the plan expires
Text messages (SMS): Data only: use an app for verification codes
Unused validity: 180 days before it must be installed

Setting up Buy, scan the QR code we email you, and switch on the travel line when you land. How it works

Choosing a plan

How much data do you need?

The allowances below are our sizing recommendations, not measurements. The plan beside each one is the cheapest option on this page that covers it.

Recommended data allowances matched to the plans sold for this destination
You are	Plan for	Cheapest plan that covers it
LightMaps, messaging and the occasional lookup	About 1 GB a week	$1.591 GB, 7 days
TypicalMaps, social, photos and some browsing	About 3 to 7 GB a week	$4.595 GB, 30 days
HeavyVideo streaming, video calls and uploads	10 GB a week or more	$8.0010 GB, 30 days
Working or sharingTethering a laptop, calls and cloud sync	20 GB a week or more	$13.99Unlimited, 7 days

Work it out from your own habits

What a week abroad costs

eSIM, local SIM or roaming?

Charged per day

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Queue and plastic

A SIM at the airport

$1.59

Viasimo, one bundle

Only the Viasimo figure is a price: it comes from today’s live catalog. The other two rows are directional, not quoted rates.

About this eSIM

Most Slovakia trips are really two trips stitched together: a town one and a mountain one. A travel eSIM handles both without you touching a shop counter, which is worth something in a country where the best days often start with a bus timetable and end at a trailhead. Set the profile up before departure and your phone is on a Slovak network as soon as you land in Bratislava or Kosice, or as soon as you cross the border by train from Vienna, Budapest or Prague.

Getting online when you land

Install the eSIM while you still have wifi at home. Installation needs a connection and takes a couple of minutes; nothing is consumed until the line actually attaches to a network in Slovakia. On arrival, enable the line, allow data roaming for it, and leave network selection on automatic so your handset picks the strongest signal rather than clinging to the first one it saw.

Bratislava airport is small and the walk from gate to bus stop is short, so it pays to have this sorted before you are standing outside deciding between the airport bus and a taxi. Arriving overland is just as straightforward: the line usually registers within a minute of crossing the border, and if it does not, one flight mode toggle sorts it. Many travellers reach Slovakia from Vienna, which is close enough that your phone may still be clinging to an Austrian tower for a while after the border; the toggle fixes that too.

The networks you'll be on

Slovakia has two operators your line can use, O2 and Orange, both running 4G LTE and 5G where it has been rolled out. That gives your phone options, and in most places it will find a solid 4G signal without any input from you.

A useful habit in the mountains: if you have signal but nothing loads, open your network settings and let the phone rescan, or briefly force it to reselect. Valley locations sometimes hold onto a distant, weak tower long after a better one has come into range. This is not specific to Slovakia, but it shows up more here than in flatter countries because the terrain is so folded.

Where coverage holds, and where it thins

Cities, towns and the main road and rail corridors are well served. Bratislava, Kosice, Zilina, Banska Bystrica, Trnava, Nitra and Presov all behave the way you would expect a European city to behave, and the motorway spine along the country plus the main rail line between the capital and the east stay connected almost the whole way.

The mountains are where you need to plan. In the High Tatras, coverage tends to follow the resort villages and the valley floors: Strbske Pleso, Stary Smokovec and Tatranska Lomnica are fine, as are the cable car stations and many of the ridges, which sometimes have better signal than the valleys because they are in line of sight of distant towers. What drops out is the middle ground, particularly deep valleys, the shaded sides of ridgelines, and the approach gullies where you are boxed in by rock on three sides.

Slovak Paradise, with its ladder and gorge routes, is unreliable in the narrow sections by design of the landscape. The cave systems, of which the country has many, have no signal at all once you are underground. Rural pockets in the far east and in the folded country around Orava can be thin between villages, and forest roads in the Low Tatras and the Muranska plateau lose the connection for stretches at a time. None of this is unusual for Central European mountain terrain, but it does mean an offline map is not optional if you are hiking.

What you'll actually use data for here

Transport planning is the first thing. Intercity buses and trains are the practical way to move around, and live timetable apps, seat reservations and ticket purchases all want a connection. Bus links to trailheads run on their own logic and can change with the season, so checking the real schedule the morning you travel saves a wasted afternoon.

Then it is hiking logistics: weather forecasts that change fast in the Tatras, trail condition notices, mountain hut availability, and checking whether a route is open at all, since some high sections close outside the summer window. Slovakia also has an unusually good spread of castles, wooden churches and spa towns that are easy to reach and hard to research on the spot without data.

Everyday use fills in the rest. Translation helps outside the tourist centres, where menus and museum labels are often Slovak only. Card payment is widespread but far from universal in villages, so map searches for the nearest bank machine come up more than you would expect. Add messaging, photo uploads from a ridge, and a bit of streaming on a long train ride, and a moderate allowance goes further here than in a city break destination.

Before you fly

Get the profile installed at home and confirm your handset is unlocked and eSIM capable. Download offline maps for every mountain area you plan to walk in, including the approach roads, and screenshot your accommodation address in case you land somewhere with no bars and a taxi driver who wants a street name.

Keep your home line active for calls and verification codes but turn its data roaming off. If you are combining Slovakia with neighbouring countries in the same trip, check that the plan you buy covers the whole route rather than assuming it does, because a single country plan stops working the moment you cross into Poland, Hungary, Austria or Czechia.

Unlimited runs at full speed up to a fair-use limit, then continues slower.

Before you buy

Important to know

This is a data-only eSIM. It carries no calls or SMS on its own number.
Your existing number stays on your primary SIM, so calls and verification texts keep working.
Your phone must support eSIM, and some carrier-locked phones cannot install one.
Signal varies with location, terrain, congestion and your handset. Dense urban areas are consistently better served than remote ones.
5G only works where the host network has deployed it and your phone supports it. Everywhere else it falls back to 4G LTE.
The eSIM selects a host network automatically. You cannot pick or switch between them.
Unlimited plans run at full speed up to a fair-use limit, then continue at a reduced speed. Read the fair usage policy

Looking for more information?

Frequently asked questions

Does an eSIM work in Slovakia?

Yes. Your Slovakia eSIM connects automatically the moment you arrive, with no roaming fees and nothing to set up at the airport. The host networks it can use are O2, Orange. Coverage runs on 4G LTE and 5G where the network has rolled it out, and falls back to 4G elsewhere.

Do I get 5G in Slovakia?

Yes, where it has been deployed. 5G runs on O2, Orange in Slovakia, and your eSIM uses it automatically on a 5G-capable phone, dropping back to 4G LTE outside covered areas. No country is covered everywhere, so 5G availability varies by location.

What is the mountain rescue number in Slovakia?

Call 18 300 to reach Horská záchranná služba (HZS), Slovakia's mountain rescue service, which also has an official HZS app. The UK Foreign Office warns that rescue can cost up to 1,000 euros, so make sure your insurance covers it. Breaking HZS rules, for example by using closed trails, can lead to fines of up to 3,320 euros.

Where do I buy a motorway vignette for Slovakia?

Slovakia uses an electronic vignette linked to your number plate, with no sticker. The official eznamka.sk system describes itself as the only official sales channel, with online and in-app sales plus authorised points of sale. A one-day vignette has been available since 2024. Buy it before you join the motorway and double-check your registration number.

Is there 5G in Slovakia?

Yes. All four Slovak operators run 5G, with Orange launching in May 2021 and O2 in September 2021. Our eSIM can use O2 and Orange with 4G/LTE and 5G support, so you will get 5G where those networks offer it, mainly in cities and larger towns. In mountain valleys, expect 4G or weaker signal.

Are there bears in the Tatras?

Yes. The UK Foreign Office says brown bears live in many parts of Slovakia, including the High and Low Tatras and Poľana. Stay on marked trails, make noise in forests and keep dogs under control. Save the HZS mountain rescue number, 18 300, and share your route before setting off, as signal can drop in deep valleys.

How much data do I need for 7 days in Slovakia?

For 7 days in Slovakia, Viasimo sells 1 GB for $1.59 and unlimited data for $13.99. Our sizing recommendation, not a measurement: maps, messaging and the occasional lookup, about 1 GB a week; maps, social, photos and some browsing, about 3 to 7 GB a week. The data calculator on this site works it out from how you actually use your phone.

Installing, keeping your number, topping up and hotspot work the same everywhere: see how it works →

Know before you go

Slovakia: what to know before you land

Slovakia has four mobile networks, and our eSIM can use two of them, O2 and Orange, including 5G where they offer it. Two numbers are worth saving before you go: 18 300 for the HZS mountain rescue service in the Tatras, and the official eznamka.sk site, the only legitimate place to buy the electronic motorway vignette.

Emergency: 155 ambulance
150 fire
158 police
18 300 mountain rescue
Plugs: CE 230V
Currency: Euro (EUR)

Main airports

BTS M. R. Štefánik Airport (Bratislava)
KSC Košice International Airport

Apps worth having HZSeznamkaBoltWhatsApp

HZS mountain rescue: 18 300 and the HZS app

Slovakia's mountain rescue service, Horská záchranná služba (HZS), covers the High and Low Tatras, Malá Fatra, Slovak Paradise and other ranges. Its emergency line is 18 300, and it also offers an official HZS app, which you can install before a hike. Save the number in your phone alongside the general emergency numbers: 155 for ambulance, 150 for fire and 158 for police.

Rescue is not always free. The UK Foreign Office warns that HZS may charge up to 1,000 euros for a rescue, so check that your travel insurance includes mountain rescue and helicopter evacuation. Ignoring or breaking HZS rules, such as using closed trails, can lead to fines of up to 3,320 euros.

The same advice notes that brown bears live in many areas, including the High and Low Tatras and Poľana. Stay on marked trails, make noise in forests and keep dogs under control. Mountain weather can change quickly, so check forecasts on your phone before you start, and send someone your route and expected finish time while you still have a signal in the valley.

Buying the e-vignette on eznamka.sk before the D1

To drive on Slovakia's motorways and expressways, such as the D1 from Bratislava towards Žilina, Poprad and Košice, you need a valid motorway vignette. Slovakia uses an electronic vignette: there is no windscreen sticker, and the vignette is linked to your vehicle's registration number. The official system, run through eznamka.sk, describes itself as the only official sales channel, with sales online, in the eznamka mobile app and at authorised points of sale.

A one-day vignette was introduced in 2024 and, according to eznamka, accounted for about one in four e-vignettes sold in the first half of 2026. It suits travellers crossing Slovakia on the way to Hungary, Poland or Austria. Longer-validity options are also available.

Buy the vignette before you join the motorway, ideally before you cross the border. With data on your phone, you can do it in a few minutes from a petrol station forecourt or a parked car. Check the registration number carefully, and keep the confirmation in your email or as a screenshot. The UK Foreign Office warns that driving without a valid vignette can result in a heavy fine.

O2, Orange, Telekom and 4ka: Slovakia's networks and 5G

Slovakia has four mobile operators: Slovak Telekom, Orange, O2 and 4ka. All four have launched 5G. Orange switched on 5G in May 2021 and O2 in September 2021, with Telekom and 4ka also running 5G networks.

Our eSIM can use O2 and Orange, with 4G/LTE and 5G support. Having two networks available gives your phone an alternative when one is weak, which helps in the folded valleys of the Tatras, Orava and the far east. Slovak Telekom and 4ka are not used by our eSIM.

In Bratislava, the UK Foreign Office warns about pickpocketing around the main tourist areas and drink-spiking and theft in some Old Town clubs, some of which have charged extortionate prices. Check menu prices before ordering, keep your phone secure and use a ride-hailing app or licensed taxi late at night.

If you are driving a foreign-registered car, the Foreign Office notes that thieves sometimes puncture tyres and then offer fake help. Keep luggage out of sight, and if you have a puncture, use your phone to call your rental company or a recognised breakdown service rather than accepting help from strangers.

Researched October 2026 · 5 sources

hzs.sk Horská záchranná služba (HZS)
eznamka.sk eznamka.sk electronic vignette
gov.uk Slovakia travel advice: safety and security (GOV.UK)
gov.uk Slovakia travel advice: getting help (GOV.UK)
en.wikipedia.org List of 5G NR networks (Wikipedia)

7-day itinerary

Seven days in Slovakia: Bratislava, Banská Štiavnica, the High Tatras and Spiš

A west-to-east road trip for walkers and history lovers: Bratislava's old town and Devín Castle, the mining town of Banská Štiavnica, two days in the High Tatras and Slovak Paradise, then Spiš Castle and Levoča before ending in Košice.

Length: 7 days
Bases: 5

When to go Late June to September is best for high Tatras trails, as many upper paths close from November to mid-June; May and October are quieter for the towns, and winter suits skiers rather than hikers.

Day 1 Bratislava

Bratislava: castle and old town

Bratislava airport is about 20 minutes from the centre; Vienna airport is about 1 hour away by bus.

Climb to Bratislava Castle for the view over the Danube and the UFO bridge towards Austria and Hungary. Walk down past St Martin's Cathedral, where Hungarian kings were crowned, into the old town: Michael's Gate, the Main Square and the Old Town Hall. In the evening cross the Danube on the Most SNP bridge or stroll the riverside promenade, choosing bars that show prices up front.

Signal O2 and Orange 5G are available across central Bratislava; keep your phone secure around the old town, where pickpocketing is reported.
Day 2 Banská Štiavnica

Devín Castle, then to Banská Štiavnica

Devín is about 20 minutes from Bratislava; then about 2 hours 30 minutes by car to Banská Štiavnica. Buy your e-vignette on eznamka.sk before joining the motorway.

In the morning visit the ruins of Devín Castle on a cliff above the meeting of the Danube and Morava rivers, on the old border with Austria. Then drive east into the Štiavnica Mountains to Banská Štiavnica. Arrive in time to walk the steep lanes of the old mining town and see the Holy Trinity column on the square at golden hour.

Signal Good 4G and 5G around Bratislava and Devín; coverage thins on the hill roads into the Štiavnica Mountains, but Banská Štiavnica town has steady 4G.
Day 3 Banská Štiavnica

Banská Štiavnica: castles and mines

Explore the UNESCO-listed town, once one of Europe's richest mining centres and home to the first Mining and Forestry Academy, founded in 1762. Visit the Old Castle and the white New Castle above the town, then put on a helmet for an underground tour at the open-air Mining Museum. Late afternoon, climb to the Baroque Calvary on the hill opposite for views back over the roofs.

Signal Reliable 4G in town; no signal underground in the mine tunnels, so agree meeting times beforehand.
Day 4 Starý Smokovec

To the High Tatras and Štrbské Pleso

Banská Štiavnica to Štrbské Pleso by car, about 3 hours; the Tatra electric railway links the resorts along the range.

Drive north-east through the Low Tatras to the High Tatras. At Štrbské Pleso walk the easy path round the glacial lake, then take the marked trail up to Popradské pleso, a quieter mountain lake, and the symbolic cemetery for those who died in the mountains. Continue by road or the Tatra electric railway to Starý Smokovec for the night.

Signal 4G is good in the resorts and at Štrbské Pleso; on the trail to Popradské pleso it can drop in the valley. Save 18 300 for HZS mountain rescue and install the HZS app.
Day 5 Starý Smokovec

Skalnaté pleso and Lomnický štít

From Tatranská Lomnica take the cable car up to Skalnaté pleso, a lake below the peaks, and, if weather and tickets allow, the small cabin on to the summit of Lomnický štít, at 2,634 metres one of the highest points in the range. Walk back along the Tatranská magistrála trail towards Hrebienok and down past the Studenovodské waterfalls to Starý Smokovec. Check the HZS weather and trail notices before setting off.

Signal Signal is generally available at the cable car stations and on open ridges, but drops in the forested valleys near the waterfalls; brown bears live here, so stay on marked trails.
Day 6 Levoča

Slovak Paradise: Suchá Belá gorge

Starý Smokovec to Podlesok is about 45 minutes by car; Levoča is about 40 minutes from Podlesok.

Drive to Podlesok near Hrabušice, the trailhead for Slovak Paradise National Park. Hike up the Suchá Belá gorge, climbing metal ladders and steps beside small waterfalls; parts of the route are one-way, so you go uphill only, then return through forest via Kláštorisko. Allow four to five hours. Continue to the walled town of Levoča for the evening.

Signal Little or no signal inside the gorge; coverage returns at Kláštorisko and the trailhead. Download the trail on an offline map app.
Day 7 Košice

Levoča, Spiš Castle and Košice

Levoča to Spiš Castle is about 20 minutes; Spiš Castle to Košice about 1 hour 15 minutes. Košice has an airport and trains back to Bratislava.

See St James's Church in Levoča, home to an 18.6-metre Gothic altar carved by Master Paul around 1510, and the Renaissance town hall. Drive to Spiš Castle, one of Central Europe's largest castle complexes, on a limestone hill above Spišské Podhradie, with views towards the cathedral town of Spišská Kapitula. Finish in Košice, walking the Main Street to St Elisabeth's Cathedral in the evening.

Signal 4G at Spiš Castle and good 4G or 5G in central Košice.

Staying connected on this route

Buy your motorway e-vignette only on the official eznamka.sk site before driving the D1.
Save 18 300 for HZS mountain rescue, install the HZS app and download offline maps before the Tatras and Slovak Paradise hikes.
Our eSIM can use O2 or Orange; if one is weak in a valley, set network selection to automatic so it can move to the other.

Itinerary sources · 3

whc.unesco.org UNESCO World Heritage Centre: Historic Town of Banská Štiavnica
whc.unesco.org UNESCO World Heritage Centre: Levoča, Spišský Hrad and the Associated Cultural Monuments
gov.uk GOV.UK foreign travel advice: Slovakia

Where this comes from

Information and verification

Each block below says what was checked and when. Anything we cannot date, we do not claim.

Prices and plans: Every price and allowance on this page is read from the live catalog, not typed in.; Verified October 30, 2026
Host networks: The operator list comes from the network partner that carries this eSIM.; Verified October 30, 2026