The check-in code that arrives via email at 11 p.m.
You land in Prague at 10:30, the airport bus to Old Town takes 35 minutes, the apartment host emailed the door code earlier and you can't open the message because your phone is cycling through "no service." That's the moment data was supposed to be already working. Not in 20 minutes when you find a café with Wi-Fi. Not after a SIM kiosk visit. Now.
Roamzy charges $1.43 per gigabyte in Czechia. That's $0.0014 per megabyte, billed in real time as your phone uses data on Czech networks. No subscription. No expiry on the unused balance. No minimum bundle. One per-MB rate across 192 countries — the shape of the invoice, not a marketing line.
How much will Roamzy actually cost on this trip?
A typical visitor to Czechia uses 0.4–1.2 GB per day: Maps in Old Town's lanes, Bolt or Liftago, the camera-translator on a knedlíky menu, the ČD rail app for a side trip to Český Krumlov, Wolt for late dinner, contactless payments via Apple Pay or Google Pay (Czechia is largely card-friendly in cities, partial in small villages), the occasional video call. Call it 1 GB/day for the math:
| Trip length | Roamzy ($1.43/GB) | Tourist roaming pass | Airport local SIM |
|---|---|---|---|
| 3 days | $4.30 | $15–40 | $10–25 + paperwork |
| 1 week | $10.00 | $25–60 | $15–30 + paperwork |
| 2 weeks | $20.00 | $40–95 (often two passes) | $20–35 + 30-day cap |
Competitor prices in columns 3 and 4 are 2025 ranges based on typical offerings; exact figures depend on your home carrier and the airport store you visit. Roamzy's rate in column 2 is our actual published rate from the pricing page.
Prague's PRG airport has SIM kiosks, but on a four-day weekend the queue is rarely worth it. The eSIM is already attached when you board the airport express bus.
Where does Roamzy work in this country?
Czechia is one of the better-wired Central European markets. The shape on the ground:
- Prague, Brno, Ostrava, Plzeň, Liberec — 5G in the centers, providers compete on quality
- Český Krumlov, Karlovy Vary, Telč — solid LTE through the heritage cores
- Prague Metro — signal works on platforms and most tunnel runs
- ČD intercity (Prague–Brno, Prague–Ostrava, Prague–Berlin) — near-continuous signal end to end
- The Bohemian Switzerland, the Šumava, the Beskydy — workable LTE in towns; deep forests drop briefly
- Moravian wine country (Mikulov, Lednice) — strong LTE through the towns
Why is per-megabyte pricing simpler than packages?
A Czech trip is already small frictions: a tram timetable that's slightly different on Sundays, a card terminal that wanted only Czech cards last year and accepted everything this year, an apartment host who only checks WhatsApp twice a day. The data plan should not also be a problem.
Roamzy is built around that. No first-purchase promo. No fine-print throttling. No auto-renewal six months later. One rate, billed by the megabyte, balance carries.
How do I install my Roamzy eSIM?
| Plug type | Voltage | Frequency | iOS | Android |
|---|---|---|---|---|
| Type C, E | 230 V | 50 Hz | iPhone XS+ | Pixel 3+, Galaxy S20+ |
- Sign in to Roamzy via Telegram or Google
- Top up the eSIM with a minimum of 20 USDT — stablecoins, no cards, no banks, no FX surcharges
- The QR code appears in the dashboard once payment confirms
- Settings → Cellular → Add eSIM → scan QR
- The counter starts the moment you land at PRG, BRQ, or OSR
Supported stablecoins, networks, and common iPhone/Android setup errors are in the FAQ.
What are Roamzy's honest limitations?
Three traps Roamzy doesn't have because they were never built in.
- No welcome promo that bait-and-switches your second top-up. The rate on top-up #1 is the rate on top-up #20.
- No fine-print throttling. One rate, full speed — first GB and the hundredth cost the same $0.0014/MB.
- No auto-renewal you forgot to cancel. Balance runs out, the eSIM stops.
It's not a marketing gimmick — it's an engineering decision born from indifference to gimmicks. You can't make a tariff cheaper than no fine-print and no expiry — so we don't.
What if my trip continues to other countries?
Czechia sits between Germany, Austria, and Poland. Same Roamzy account, same logic at the border:
- Germany — frequent extension by train from Prague to Berlin or Dresden
- Austria — Vienna is four hours from Prague by ČD
- If you want the underlying mechanics — how roaming actually gets priced and why it hurts