Prague is the kind of city where you will want data constantly — navigating Old Town, looking up restaurants, translating Czech menus, sharing Charles Bridge photos.
Coverage
T-Mobile, O2, and Vodafone cover over 99% of populated area with 4G. Even Cesky Krumlov and Karlovy Vary have strong signals.
Pricing
Airport SIM: 500-800 CZK ($20-33). Travel eSIM: $6-10 for 5GB. The math is obvious.
Speed Tests
Prague: 50-90 Mbps. Brno: 40-70 Mbps. Cesky Krumlov: 25-45 Mbps. All perfectly usable.
Prague Tips
Metro has no signal underground but every station has WiFi. The PID Litacka app lets you buy transport tickets on mobile data.
Traveling to Czech Republic?
Browse affordable eSIM data plans for Czech Republic. Plans start from $1.14. Instant activation, no roaming fees.