Costa Rica is a driving country wrapped in a rainforest, and both halves of that sentence are about your phone. You will navigate to places that have no address, on roads that change with the weather, in a landscape that absorbs mobile signal for a living. Data here is not about posting photos. It is about arriving.
The address problem nobody warns you about
Costa Rica largely does not use street addresses. Directions are given in relation to landmarks — so many metres north of a church, past the old fig tree, beside the school — and this is not a quirk, it is the actual system. Businesses list themselves this way, hotels give directions this way, and some of the landmarks referenced no longer exist.
What this means practically is that a GPS pin is worth more than any written direction. Get a map link or coordinates from every hotel, tour operator and restaurant before you set out, save them, and navigate to the pin. Travellers who try to find a Nosara guesthouse by written directions lose an hour of daylight doing it.
What coverage is honestly like
The populated parts of the country are well covered. San José and the Central Valley, Liberia and the Guanacaste resort corridor, Tamarindo, Jacó, Manuel Antonio and La Fortuna all have solid 4G and 5G in places. You will have signal at both international airports and in every town with a supermarket.
Then there is the rest. Monteverde's cloud forest is exactly the kind of terrain — high, wet, densely vegetated, folded — that defeats mobile signal, and coverage there is thin and unreliable. The Osa Peninsula and Corcovado are genuinely remote and you should plan on being offline. Tortuguero is reached by boat or small plane and coverage reflects that. The dirt roads down the Nicoya coast toward Santa Teresa and Nosara drop in and out, as do the routes around Rincón de la Vieja and the Caribbean side beyond Puerto Viejo.
The networks you will connect to
Kölbi, run by the state utility ICE, has the widest rural reach and is usually the network that still works where others do not. Liberty and Claro are strong in the cities and along the main tourist corridors. A travel eSIM roams onto whichever partner network is strongest where you are, which in a country this vertical is worth more than it sounds.
Driving, roads and the rainy season
Costa Rican roads range from excellent to genuinely challenging within a single afternoon. Unpaved sections, river crossings, potholes that would swallow a small dog and gradients that surprise rental cars are all normal. Waze is widely used here and often more current on road conditions than the alternatives, because locals report problems in real time.
In the green season the picture changes daily. A road that was fine in the morning can be impassable after an afternoon downpour, and the only way you will know is if someone tells you or your app does. Download offline maps of every region you plan to drive, then use live navigation on top of them.
Tours, wildlife and booking codes
Almost everything you do in Costa Rica is booked: zip lines, hanging bridges, volcano hikes, night walks, rafting, turtle tours, catamaran trips. Nearly all of it arrives as an email confirmation with a code and a meeting point that is itself described by landmark rather than address.
Screenshot every confirmation as it arrives and save the meeting point as a pin. Guides frequently coordinate by WhatsApp, including changes for weather, and being reachable is how you find out the 6am pickup moved to 5:30.
How much data you will actually use
Plan on 4 to 6 GB for a week, more if you are driving daily. Navigation is the dominant consumer here because you use it for hours at a time rather than in short bursts, and Costa Rica is a country where you drive between everything.
Add WhatsApp coordination with guides, wildlife and weather lookups, and photo sharing — Costa Rica generates a great deal of the latter. Turn off automatic cloud photo backup over cellular before you fly, because a week of rainforest video will otherwise upload itself.
Timing your plan to the trip
Costa Rica trips usually run ten days to two weeks and cover several regions. Pick a plan that outlasts your departure rather than one expiring the morning you fly, because the drive back to San José or Liberia is exactly when you want live traffic.
Install at home on Wi-Fi before you leave. The profile stays dormant until it first connects to a Costa Rican network, so the countdown starts on landing rather than on purchase.
Who this suits
Anyone renting a car, which is most visitors — navigation and pinned locations are the whole game. Travellers doing the classic Arenal, Monteverde and Manuel Antonio loop. Guanacaste resort guests taking day tours. Surfers heading down the Nicoya dirt roads. Families coordinating early pickups by WhatsApp. And anyone who has ever tried to find a Costa Rican address by reading it aloud.
Moving between regions
Most Costa Rica itineraries string together three or four bases — volcano, cloud forest, beach — with long drives or short domestic flights between them. Those transfer days are when connectivity matters most and when you are most likely to lose it, because the interesting route between regions is rarely the well-covered one.
Before each transfer, download the offline map for the region you are heading into, not just the one you are leaving. Confirm your next accommodation and get its GPS pin while you still have signal. And send your family a message before you set off rather than on arrival, because a five-hour drive through the mountains with no updates reads very differently from Montreal than it does from the road.
Domestic flights on the small carriers are worth a mention too: schedules shift with weather, and notifications come by WhatsApp or email rather than a departures board. Being reachable is how you learn your afternoon flight moved.
Frequently asked questions
Will I have signal in Monteverde or Corcovado?
Patchily in Monteverde and largely not in Corcovado. Both are high, wet and heavily forested, which is the worst combination for mobile signal. Download offline maps and expect to be out of touch for stretches.
How much data do I need for a week in Costa Rica?
Four to six gigabytes for a typical week, and more if you are driving every day. Navigation runs for hours here rather than minutes, which makes Costa Rica heavier on data than a beach destination of the same length.
Why do I need GPS pins rather than addresses?
Because Costa Rica largely does not use street addresses — directions are given by landmark and distance. Save a map pin from every hotel and tour operator before you set out and navigate to that instead.
Is Waze better than Google Maps here?
Many locals use Waze and it is often more current on road conditions, closures and flooding because drivers report them live. Either way, download the offline map first so you are covered when the signal drops.