Stay connected across the Czech Republic with 4G/LTE and 5G on O2, T-Mobile, and Vodafone. Prague, Brno, and Ostrava have full 5G. Český Krumlov's fairy-tale old town and Bohemian Switzerland National Park are both on 4G. Works from the Prague Metro to the Moravian wine region.
5G ready Hotspot included Keep your home line 24/7 humans
Change your mind within 7 days and we refund in full — as long as the eSIM is unused or under 100 MB, so you can install it and check it connects first. A plan that genuinely fails is refunded any time. Details.
Pick data amount and validity. Pay with card, Apple Pay, or Google Pay.
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Scan the QR code
We email a QR code instantly. Scan it in Settings — installed in under 60 seconds. No app needed.
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Land online in Czech Republic
Your phone connects to local networks automatically when you arrive. No SIM swap, no kiosk. Hotspot included.
Network
Coverage & connectivity.
Networks we run on in Czech Republic
O25GVodafone5G
Your device connects to the strongest available network automatically — no manual setup.
Prague Brno Ostrava Plzeň Liberec
O2 and T-Mobile Czech Republic lead in 5G deployment. Prague's Metro (all lines A, B, C) has 4G in stations and tunnels. The Prague–Brno D1 motorway has continuous 4G. Prague Old Town, Charles Bridge, and Malá Strana have excellent 4G/5G. Český Krumlov historic centre has 4G. Bohemian Switzerland National Park (Hřensko, Pravčická Gate) has 4G at main tourist sites. The Karlovy Vary spa zone has 4G. Šumava National Park main routes have 4G at park entrances and visitor centres. The Moravian wine country (Mikulov, Lednice) has 4G. Kutná Hora and the Bone Church (Sedlec Ossuary) have 4G.
Plan size
How much data do you need?
Pick your travel style and trip length — we'll suggest the right Czech Republic plan, no guessing.
Yes. Prague city centre, Old Town Square, Wenceslas Square, and Václav Havel Airport all have 5G. Brno and Ostrava also have 5G. Expect speeds of 300–800 Mbps.
Does the eSIM work on the Prague Metro?
Yes. All three Prague Metro lines (A, B, C) have 4G in stations and throughout tunnels between stations — a rarity in European metros.
Is there coverage in Český Krumlov?
Yes. Český Krumlov historic centre, the castle, and the Vltava riverbank have solid 4G.
Does this eSIM work in Bohemian Switzerland National Park?
Yes. Hřensko village and Pravčická Gate (the largest natural arch in Central Europe) have 4G. Deep gorge hiking trails thin to 3G.
What currency does the Czech Republic use?
Czech koruna (CZK / Kč). The Czech Republic is an EU member but has not adopted the Euro. ATMs dispense koruna; most tourist venues accept card payments.
What is an eSIM?
An eSIM (embedded SIM) is a digital SIM built into your phone. Instead of a physical card, you scan a QR code and your plan installs instantly — no SIM tray needed.
Is my phone eSIM-compatible?
iPhone XS (2018) and newer, most Android flagships from 2020+, and all Samsung Galaxy S21+ devices support eSIM. Check our compatibility page for the full device list.
How do I install the eSIM?
After purchase, we email a QR code. On iPhone: Settings → Cellular → Add eSIM → Scan QR Code. On Android: Settings → Network & Internet → SIMs → Add eSIM. The whole process takes under 60 seconds.
Can I keep my regular SIM while using this eSIM?
Yes. Most phones support dual SIM (physical + eSIM). Keep your home number for calls and SMS — use Flysimio for data abroad. You control which SIM handles what in your phone Settings.
Does the eSIM include a hotspot (tethering)?
Yes, all Flysimio plans include mobile hotspot at no extra charge. Share your data connection with laptops, tablets, or other devices freely.
What happens when my data runs out?
You can top up data from your account dashboard at any time. Top-ups are applied instantly — no need to buy a new eSIM or wait.
Can I get a refund?
Yes. We offer a full refund within 7 days of purchase. Contact contact@flysimio.com with your order number.
How long is the eSIM valid for?
You have 6 months from your purchase date to activate the eSIM. Once activated, the plan validity period (e.g., 7 days, 30 days) begins counting down.
Will the eSIM work at the airport when I land?
Yes — as long as you installed the eSIM before your flight, it activates automatically when your phone connects to a local network on landing. No Wi-Fi required for activation.
What if the QR code doesn't scan?
If the QR code won't scan, you can enter the activation code manually — we include both in the email. You can also contact our 24/7 support team and we'll resend or manually provision your eSIM.
eSIM in Czech Republic
The complete guide.
Best eSIM for travel to the Czech Republic
The best Czech Republic eSIM combines strong city and countryside coverage, clear pricing, and instant setup. Flysimio runs on O2, T-Mobile, and Vodafone — networks that cover Prague, Brno, and Ostrava, plus fairy-tale Český Krumlov and Bohemian Switzerland — with 5G in the major cities. Plans are prepaid with no contract and no roaming bill surprises: choose your data, pay once, done. Your QR code arrives by email seconds after checkout and installs in under a minute, every plan includes free mobile hotspot, and a 7-day money-back guarantee has you covered. Land at Prague already connected and skip the airport SIM counter entirely.
How to set up a Czech Republic eSIM (step by step)
Getting online in the Czech Republic takes about two minutes. First, confirm your phone supports eSIM — iPhone XS (2018) and newer and most Android flagships from 2020 qualify. Choose your Czech Republic plan on Flysimio and pay with card, Apple Pay, or Google Pay; your QR code arrives by email within seconds. On Wi-Fi before you fly, open Settings → Cellular → Add eSIM (iPhone) or Network & Internet → SIMs → Add eSIM (Android) and scan it — a manual code is included too. Keep your home line as default until arrival. When you land at Prague or Brno, your Flysimio line connects automatically to a Czech network — no kiosk, no physical SIM, no queue.
How much data do you need in the Czech Republic?
Most travellers over-buy. For maps, messaging, and email, roughly 300 MB a day is plenty, so a 3–5 GB plan covers a week in Prague comfortably. Add social media, photos, and music and you'll want about 700 MB a day — a 10 GB plan suits a two-week trip taking in Prague, Český Krumlov, and Moravia. Heavy streamers, video callers, and anyone tethering a laptop should plan for 1.5 GB or more per day or choose an unlimited daily plan. Handy detail: all three Prague Metro lines have 4G in the tunnels, so you stay online underground. Use the calculator above to size it, and top up mid-trip if you run low.
Using a Czech Republic eSIM on iPhone and Android
Flysimio runs as a second line beside your usual SIM, so you keep your home number for calls and texts while your Czech data flows over the eSIM — standard dual-SIM behaviour on iPhone XS and later and most Android phones from 2018. After installing, set the Flysimio eSIM as your cellular-data line and turn on Data Roaming for that line only; it simply lets the eSIM connect to Czech networks, with no roaming fees. Keep your home SIM on for messages and calls, or switch it off to avoid your own carrier's charges. If you're unsure about your model, the compatibility page confirms it before you buy.
Hotspot, calls, and texts on a Czech Republic data eSIM
Every Flysimio Czech Republic plan includes mobile hotspot at no extra cost and without throttling, so you can tether a laptop or tablet or share with a travel companion and use your full allowance freely — handy for remote work from a Prague café. As a data-only eSIM it has no Czech phone number, but that rarely matters: WhatsApp, FaceTime, Messenger, and Google Meet handle calls and messages over data, and your home number stays reachable on your primary SIM. You keep costs predictable and skip the per-minute charges of traditional roaming.
Short Czech Republic trips vs. long stays
For a weekend in Prague, a small 1–5 GB plan on a 7-day validity is the most economical choice. For a two-week trip taking in Prague, the spa towns, and Moravia — or a longer stay — a 10–20 GB plan or an unlimited daily option lets you navigate, stream, and work without watching a meter. Because Flysimio gives you six months to activate, you can buy before you leave and the validity only starts when your eSIM first connects in the Czech Republic. No contract, nothing to cancel — the plan stops when it's done, and you can top up or rebuy for your next trip.
