Key facts
- COVERAGE
- Czechia
- NETWORKS
- Fixed data: O2, T-Mobile, Vodafone · Unlimited: O2, T-Mobile
- PLAN TYPE
- Data only
- IP ADDRESS LOCATION
- Fixed data: United Kingdom · Unlimited: Poland
- DELIVERY
- QR code by email
How it works
- 1Choose a plan and pay.
- 2Scan the QR code we email you. You can install it before you fly.
- 3When you land in Czechia, turn on data roaming for the Spidot line.
Visiting more than one country?
Europe
Czechia and 35 more countries on one eSIM
from$5.90
See the Europe planQuestions about the Czechia eSIM
Which networks does it use?
Do I get a local phone number?
Can I use it outside Czechia?
How do I install it?
Will my phone work with an eSIM?
Is a small plan enough for a long weekend in Prague?
Will my messaging apps still use my normal number?
Can I use the eSIM for hiking in the Giant Mountains or Bohemian Switzerland?
How do I avoid charges from my home operator while using the eSIM?
Can I top up if I run out of data?
Czechia eSIM guide: mobile data for travellers
Most visitors to Czechia start in Prague, and many never leave it. Those who do find a compact country that is easy to explore by train and bus: the castle town of Český Krumlov in South Bohemia, the spa colonnades of Karlovy Vary, the sandstone gorges of Bohemian Switzerland, the wine villages of South Moravia and the lively university city of Brno. A phone with working data turns all of this into simple day trips rather than logistics puzzles.
A Spidot eSIM gives you mobile data in Czechia from the moment you land, without visiting a shop or swapping SIM cards. You install it at home, switch it on at Prague airport or wherever you arrive, and keep your normal SIM for calls and texts. This guide explains the options, how much data you are likely to need, and what to expect from coverage in the cities, forests and hills.
eSIM, roaming or a local SIM in Czechia
Before you buy anything, it helps to know how the main options compare. The answer depends on where your current SIM is from and how you use your phone.
Roaming on your home plan
Holders of SIMs from EU and EEA countries can generally use their home allowance in Czechia under the EU's "Roam like at Home" rules, within their operator's fair use limits. For EU residents on a short break, this can be all you need.
Visitors from outside the EU usually do not benefit from those rules. SIMs from the UK, North America, Asia, Australia and elsewhere follow their own roaming terms, which vary widely. Ask your operator what roaming in Czechia will cost before you leave, and consider whether a separate data line would be simpler.
Buying a Czech SIM
Czech prepaid SIMs are available from operator shops and some retailers, but you need to find one, wait to be served, and swap out your own SIM unless your phone has a second slot. On a short trip, the time spent doing that is time not spent in the Old Town.
Using a Spidot eSIM
With a Spidot eSIM you buy a plan online, receive a QR code by email and install it before you travel. Your home SIM stays active for calls and texts while the Spidot line handles data. Plans start from $2.90. Most plans are data-only, so you will not get a Czech phone number; if you need to call local numbers, see our Data + calls plans.
Choosing a plan size for your trip
Czechia trips tend to fall into two patterns: a short city break in Prague, or a longer journey that adds Brno, South Bohemia, the spa towns or hiking in the mountains. Your data use will depend on your habits more than the number of days.
As a rough guide, and only a rough guide:
- Walking with an online map: light, typically a few megabytes per hour.
- Messaging, email and transport apps: light, unless you share a lot of photos or video.
- Social media with video: moderate to heavy, depending on how much video plays.
- Video calls home: several hundred megabytes for an hour is common.
- Streaming films or series: heavy, and the quickest way to use up a plan.
Some typical choices
For three or four days in Prague with hotel Wi-Fi in the evenings, a small fixed data plan usually covers maps, tram routes, restaurant searches and messaging. A week or more touring the country, with photos uploaded as you go and the occasional video call, calls for a larger plan.
If you are working remotely from Prague or Brno, or tethering a laptop, an unlimited plan means you do not have to ration data, although speed may slow after heavy use. Frequent visitors can choose a no-expiry plan and keep leftover data for the next trip. You can check how much data is left at any time and add more data if you need it.
Install the eSIM before you go
You need an internet connection to install an eSIM, so set it up at home rather than on arrival. Start by making sure you can check your phone for eSIM support; it also needs to be carrier-unlocked.
Then follow the step-by-step install guide for iPhone, Samsung or Pixel. Give the new line a label like "Travel", keep your home SIM as the default for calls and texts, and choose the Spidot line for mobile data.
- Install a day or two before your flight so there is time to sort out any problem.
- Keep the QR code email somewhere safe.
- Download offline maps of Prague and anywhere else you will visit while you are on Wi-Fi.
- Install the transport and booking apps you plan to use before you leave home.
Arriving in Czechia
Most international flights land at Václav Havel Airport Prague, to the west of the city. Brno and Ostrava also have airports with smaller schedules, and many travellers arrive by train from Berlin, Dresden, Vienna, Bratislava, Budapest or Kraków.
When you land, choose the Spidot line for mobile data and turn on data roaming for it. If you are not sure where to find this setting, our data roaming guide shows the way for each type of phone. Give the phone a minute or two to register; if it still shows no data, toggle flight mode off and on.
From Prague airport to the city
Prague airport is connected to the city by public buses that link with the metro, and by express buses to the main railway station. With data you can check the route, buy a public transport ticket in an app and follow your progress on a map so you know when to change.
Coverage in cities, hills and national parks
In Prague, Brno, Ostrava, Plzeň, Olomouc and other cities and towns, mobile data generally works as you would expect. Main roads and railway lines are also usually well covered, with short gaps in tunnels and deep valleys.
Czechia is landlocked, so there are no islands or sea crossings to think about, but it has plenty of hills, forests and protected areas where signal can be weaker:
- Bohemian Switzerland: the sandstone rock towns and gorges near Hřensko on the German border, including the Pravčická brána rock arch, have narrow valleys where signal can fade.
- Krkonoše (Giant Mountains): the highest range in the country, around Špindlerův Mlýn and Sněžka, is popular for skiing and hiking. Coverage is good in resorts but less reliable on remote ridges.
- Šumava: the large forested area along the borders with Germany and Austria is one of the quietest parts of the country, with long stretches of forest and few settlements.
- Moravian Karst: the caves and gorges north of Brno are a classic day trip. You will have no signal underground, of course, and it can be weak in the deeper valleys.
- Jeseníky: the mountains in the north-east are less visited by foreigners and more sparsely populated.
Close to the borders
Czechia borders Germany, Poland, Slovakia and Austria, and some of its best hiking areas sit right on those borders. Near the frontier your phone may occasionally pick up a foreign network. Check the network name if your data behaves oddly, and remember that a Czechia plan is intended for use in Czechia. If your route crosses into neighbouring countries, consider a multi-country plan instead.
Getting around by train and bus
Czechia has one of the densest railway networks in Europe, and trains are a comfortable way to travel between cities. České dráhy, the national rail operator, runs most services, and private operators such as RegioJet and Leo Express compete on several main routes, including Prague to Brno and Prague to Ostrava.
Mobile data on trains is usually good enough for messaging, browsing and maps, with occasional drops in tunnels and forested stretches. Some trains offer on-board Wi-Fi, but it can be slow when the train is full, so your own data is often more dependable.
Buses to smaller towns
Some popular destinations are easier to reach by bus than train. Český Krumlov, for example, is a common bus trip from Prague or České Budějovice. Having data lets you check departure platforms, show a ticket on your phone and track the journey.
Driving
If you drive on Czech motorways, you need an electronic motorway vignette, which can be bought online. Rental cars often include one, but check when you collect the car. Download offline maps for the mountains and back roads, and set up navigation before you start driving.
Using your phone as a hotspot
Personal hotspot lets you share your eSIM data with a laptop, tablet or a travel companion's phone. Switch it on in your phone settings as usual; it draws on whichever line is set for mobile data, so make sure that is the Spidot line.
Laptops are hungry for data. Before connecting, pause cloud sync, automatic updates and photo backups, then turn them back on when you are on Wi-Fi. If you plan to tether every day, an unlimited plan or a larger fixed plan makes more sense than a small one.
Public Wi-Fi: useful, with care
Wi-Fi is easy to find in Prague's cafés, hotels and shopping centres, and on many trains and coaches. It is handy for large downloads, but open networks are not always secure.
- Use your eSIM data rather than open Wi-Fi for banking, payments and anything that needs a password.
- Confirm the network name with staff; copycat networks with convincing names are a known trick.
- Turn off automatic connection to open networks in your phone settings.
- Keep your apps and operating system up to date before you travel.
Practical tips for Czechia
A few things that make a trip easier when you have data to hand:
- Currency: Czechia uses the Czech koruna (CZK), not the euro. Cards and contactless payments, including Apple Pay and Google Pay, are widely accepted. If a card machine offers to charge you in your home currency, choosing koruna is usually the better deal.
- Changing money: be careful with street exchange offices in central Prague, some of which advertise rates that do not apply to normal transactions. Withdrawing from a bank cash machine or paying by card avoids the problem.
- Prague public transport: the metro, trams and buses run on a shared ticket system. Tickets are time-based and can be bought from machines or in the official mobile app. Paper tickets must be validated when you start your journey, and inspectors do check.
- Maps and timetables: Mapy.cz is a Czech map app that many locals use, with detailed hiking trails and offline maps. Combined journey planners show train and bus times together.
- Taxis and ride-hailing: apps such as Uber and Bolt operate in Prague, and booking through an app avoids haggling over fares.
- Language: English is widely spoken in central Prague and among younger people, less so in rural areas. A translation app with Czech downloaded for offline use helps outside the cities.
- Hiking trails: Czech trails are marked with a well-known system of coloured stripes. A map app showing the same colours makes it easy to follow your route.
Travelling on from Czechia
Czechia sits in the middle of Central Europe, and trains link Prague with Berlin, Vienna, Bratislava, Budapest and Kraków. Popular combinations include Prague with Vienna and Budapest, or Prague with Kraków in Poland. You can also look at our pages for Austria, Germany and Hungary.
For a trip across several countries, one Europe plan is generally easier to manage than a separate eSIM for each border. Check the list of countries on the Europe plan page to confirm every country on your route is covered. If you are staying in Czechia, a Czechia plan is the simplest choice.
