Kolbi is the local SIM that matters most in Costa Rica, because as the state network it reaches the cloud forests, peninsulas, and rainforest back roads where Claro and Liberty drop out, with prepaid tourist plans from about 5,000 colones (roughly 11 USD) for a few gigabytes. Claro and Liberty are quicker in San Jose and along the Pan-American Highway but weaker once the pavement ends. If you mostly stick to the capital, the beaches, and the main routes, a travel eSIM is far less hassle than the airport stalls, see our Costa Rica eSIM guide to compare, or let the eSIM Finder match you to a plan.
What This Guide Covers
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How Costa Rica's Networks Actually Differ
Costa Rica runs on three operators: Kolbi (the mobile brand of the state utility ICE), Claro, and Liberty, which swallowed the former Movistar network. On paper they all advertise 4G nationwide and 5G in the cities, but the difference that decides your trip is rural reach, and that gap is not subtle.
Kolbi holds roughly 60 percent of the market and covers close to 95 percent of the territory because ICE was obliged to build towers in remote, unprofitable corners that the private carriers skipped. That is why Kolbi is so often the only bar of signal you see in Corcovado, deep in Monteverde, around Puerto Viejo on the Caribbean side, or far out on the Nicoya and Osa peninsulas. Claro tends to win the urban speed tests and is excellent along the Pan-American Highway, and Liberty is strong across the Central Valley and the busier beach towns, but both thin out before Kolbi does once you leave the main roads.
Bring Your Passport to Register
Costa Rica requires prepaid SIMs to be registered to identification, so carriers will ask for your passport at the counter and activate the line for you on the spot. The process is quick and the staff handle it, but a photo of your passport is not always accepted, so carry the physical document when you go to buy. A travel eSIM skips this step entirely.
Kolbi (ICE)
Kolbi: The Coverage King
The state network with by far the deepest reach into parks, peninsulas, and back roads
Kolbi is the default recommendation for anyone whose itinerary leaves the highway. It is routinely the only network with a working signal in Corcovado, on the gravel roads around Monteverde, out at Drake Bay and Puerto Jimenez, and along the southern Caribbean coast near Puerto Viejo. Prepaid plans are reasonable: a few gigabytes with bundled WhatsApp data runs around 5,000 to 12,000 colones, and the standalone social pack at roughly 1,500 colones is a clever cheap option if all you need is messaging.
You can top up almost anywhere, including supermarkets and pharmacies, by buying a recarga and adding credit through a quick code, which keeps you going on a longer loop without hunting for a phone shop. Buy the SIM at an official Kolbi or ICE office rather than chasing it at the airport, and you will get it registered correctly the first time.
Strengths
Weaknesses
Claro
Claro: The Speed Leader in Town
Quick urban data and a presence at the airport, with a thinner rural map
Claro is the network to beat for raw download speed in San Jose and the Central Valley, and it is the one carrier with a reliable presence at the airport, where a Claro stand near the baggage carousels sells tourist SIMs. If your trip centers on the capital, Guanacaste, and the main highway corridors, Claro is fast and perfectly capable, and its 5G in the urban core is among the best in the country. The caveat is the same one that applies to every private carrier here: signal fades faster than Kolbi once you head into the cloud forest or out onto a remote peninsula.
Strengths
Weaknesses
Liberty
Liberty: The Central Valley All-Rounder
The old Movistar network, solid across the valley and the busier beach towns
Liberty took over the Movistar operation a couple of years ago and has kept it competitive across the Central Valley, San Jose, and the tourist-heavy beach towns of Guanacaste and the central Pacific. It is a fine all-rounder for a city-and-beach trip, and notably it is the network that most international travel eSIMs for Costa Rica actually connect to, so if you go the eSIM route you are very likely riding Liberty without thinking about it. As a physical tourist SIM, though, Liberty is harder to find at the airport than Claro and offers no real coverage advantage over it in the places that count, so for a local card most travelers default to either Kolbi for reach or Claro for speed.
Costa Rica SIM Plans Compared
| Carrier | Sample Plan | Price | Coverage | Best For |
|---|---|---|---|---|
| Kolbi | 5 GB + social apps, 30 days | ~12,000 colones (~26 USD) | ~95% of country, parks and back roads | Rainforest, peninsulas, all-round reach |
| Kolbi | 2 GB + WhatsApp, 30 days | ~5,000 colones (~11 USD) | ~95% of country | Light users heading off the highway |
| Kolbi | 7-day social pack (messaging only) | ~1,500 colones (~3 USD) | ~95% of country | WhatsApp-only travelers on a budget |
| Claro | Prepaid data bundle, a few GB | ~5,000-12,000 colones | Strong in cities and on the highway | San Jose and main-route speed |
| Liberty | Prepaid data bundle, a few GB | ~5,000-12,000 colones | Good across the Central Valley | City-and-beach stays |
Colones prices above reflect typical 2026 city-store rates; exchange rates hover near 500 to 540 colones per US dollar. Airport pricing and any informal reseller will run higher, so treat this table as your reference before you pay.
Where to Buy a SIM in Costa Rica
Official Kolbi and ICE Offices (Best for Coverage)
Kolbi shops and ICE offices in San Jose, Alajuela, and most regional towns register your SIM with your passport and sell plans at the listed colones price. This is the right place to set up the network you will actually rely on in the parks and on the back roads.
The Claro Airport Stand
If you want connectivity the second you land, the Claro stand near the baggage carousels at Juan Santamaria (SJO) sells tourist SIMs, usually from early morning until around 9 PM. It is the most dependable on-arrival option now that the old Kolbi airport booth has closed.
Supermarkets, Pharmacies, and Mall Shops
Chains like Automercado and Mas x Menos, larger pharmacies, and carrier kiosks in San Jose malls such as Multiplaza Escazu stock SIMs and handle top-ups. Staff in tourist areas often speak English and can register the line for you.
Confirm Data Before You Walk Off
Whichever counter you use, slot the SIM in and load a map or website before you leave. Check the plan size and validity match what you paid and keep the receipt. Sixty seconds of testing saves a wasted afternoon hunting for a fix later.
eSIM or Local SIM for Costa Rica?
| Factor | Travel eSIM | Local SIM |
|---|---|---|
| Setup time | A few minutes, done before your flight | 10 to 20 minutes at a shop with passport |
| Passport step | None | Registration required in person |
| Network | Liberty / Claro (great on main routes) | Kolbi reaches the deepest rural areas |
| Price (week of data) | ~8 to 15 USD (Airalo, Nomad, Holafly) | ~11 to 26 USD, often with calls bundled |
| Best for | City, beach, and main-route travelers | Deep rainforest legs or needing a local number |
For a trip built around San Jose, Arenal, Manuel Antonio, and the Guanacaste coast, a travel eSIM is the easier choice: install it before you fly, land connected, and skip the passport stall entirely. The case for a local Kolbi SIM is specific but real, namely a serious off-grid leg into the Osa Peninsula, far Nicoya, or the southern Caribbean, where Kolbi's reach genuinely outclasses the networks the eSIMs use. Plenty of careful travelers run both: an eSIM as the daily driver and a cheap Kolbi SIM as the rainforest insurance policy.
Costa Rica Connectivity Tips
Practical Advice for Staying Online in Costa Rica
Take Kolbi where the pavement ends: For Corcovado, Drake Bay, far Nicoya, or Puerto Viejo, Kolbi is effectively the only network with usable signal. Even then, expect dead patches inside the deepest forest, so download offline maps before you leave the nearest town.
Lodge WiFi carries most of the load: Almost every hotel, eco-lodge, and restaurant offers free WiFi, so your mobile data mostly handles maps, ride apps, and messaging while you are moving between places.
Top up at the supermarket: You can add credit to a Kolbi line at supermarkets and pharmacies with a quick recarga code, which is far easier than finding a carrier shop on a remote stretch.
Carry the physical passport: Registration happens at purchase and a phone photo is not always accepted, so bring the real document when you buy a local SIM.
Watch the colones-to-dollar math: Plans are priced in colones; at roughly 500 to 540 per dollar, a 12,000-colon plan is about 23 to 24 USD, so the rate moves what you actually pay versus the eSIM alternatives.
Frequently Asked Questions
Do I have to register a Costa Rican SIM with my passport?
Yes. Prepaid SIMs in Costa Rica must be registered to identification, so Kolbi, Claro, and Liberty staff will ask for your passport and activate the line at the counter. The process is fast and they do the work, but a phone photo of your passport is not always accepted, so carry the physical document. A travel eSIM avoids the registration step completely.
Which Costa Rican network reaches the national parks and remote coasts?
Kolbi, by a clear margin. As the state-built network it covers about 95 percent of the country, including parks and back roads that Claro and Liberty never wired, so it is usually the only signal you will see in Corcovado, around Drake Bay and Puerto Jimenez, deep in Monteverde, or along the Caribbean near Puerto Viejo. If your trip leaves the main highways, choose Kolbi or pair an eSIM with a backup Kolbi SIM.
How much does a tourist SIM with data cost in colones?
A Kolbi SIM is roughly 1,000 colones, then you add a plan: about 5,000 colones for a couple of gigabytes with WhatsApp data, around 8,000 for 4 GB, and about 12,000 colones for 5 GB with social apps over 30 days. There is also a cheap 7-day social pack near 1,500 colones for messaging only. Claro and Liberty bundles sit in a similar range.
Can I still buy a SIM at San Jose airport when I land?
You can, but options have shrunk. The old Kolbi airport booth has closed, leaving a Claro stand near the baggage carousels as the main staffed seller, generally open from early morning to about 9 PM, plus a couple of SIM vending machines. If you arrive late or want certainty, an eSIM installed before departure or a downtown carrier shop the next day is the safer plan.
Should I get a local SIM or an eSIM for a two-week Costa Rica trip?
For a typical loop through San Jose, Arenal, Manuel Antonio, and the Guanacaste beaches, an eSIM is easier: it installs before you fly, connects on arrival, and skips the passport stall. A local Kolbi SIM earns its place only if you are going properly off-grid into the Osa Peninsula, far Nicoya, or the southern Caribbean, where Kolbi's coverage genuinely beats the networks the eSIMs use.