Claro is the local SIM most travelers should reach for in Argentina, because it carries the widest signal toward Patagonia and sells a tourist bundle of 25 GB with unlimited WhatsApp and social apps for about 15 US dollars, which is hard to beat if you are heading to Bariloche, El Calafate, or Ushuaia. Personal is the speed leader in Buenos Aires and holds up best on the Subte, while Movistar sits in the middle and is the network your travel eSIM most likely rides. The real friction is registration: Argentine prepaid lines are tied to a passport and often a local tax ID that tourists do not have, which is why plenty of visitors skip the shop and use a travel eSIM instead. See our Argentina eSIM guide to compare, or let the eSIM Finder match you to a plan.
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How Argentina's Networks Actually Differ
Argentina runs on three operators: Personal (Telecom Argentina), Movistar (Telefonica), and Claro (America Movil). All three advertise nationwide 4G and 5G in the big cities, and in Buenos Aires you genuinely cannot go wrong. The difference that decides a real trip is how far each one reaches once you leave the central provinces, because Argentina is vast and empties out fast to the south and west.
Personal usually tops the urban speed tests, averaging close to 48 Mbps, and it covers a large share of the paved national routes, which makes it superb through Buenos Aires, Cordoba, and Rosario. Movistar is the dependable middle and the network most international eSIMs connect to. Claro is the one that matters for the far south: its footprint stretches furthest toward Bariloche, El Chalten, and Ushuaia, so on a Patagonia route it is the safest local SIM. Personal, strong as it is up north, thins out below the wine country.
The Registration Catch Tourists Hit
Argentine prepaid SIMs must be registered, and the process is built for residents: staff ask for your passport and frequently a DNI or CUIT tax number that a visitor simply does not carry. Some shops will register a tourist line against a passport alone, others turn you away or need a workaround, and it varies store to store. Budget extra time and patience, and know that a travel eSIM sidesteps the whole thing.
Claro
Claro: The Southern Coverage Leader
The widest reach toward the far south, plus the most generous tourist data bundle
If you are buying one local SIM for a trip that ventures south, make it Claro. It is routinely the only network with a usable bar in the remote stretches of Patagonia, along Ruta 40, and out toward the glacier and Fitz Roy viewpoints, and its 25 GB tourist bundle with bundled messaging is the best value headline data offer of the three. In Buenos Aires it is quick too, with 5G across the capital, though Personal tends to edge it on raw urban speed.
You can top up a Claro line with a recarga at kioscos, pharmacies, and supermarkets across the country by adding credit through a short code, which keeps you going on a long southern loop without hunting for a phone shop. The catch is the same one every carrier has here: getting the line registered as a tourist can be slow, so buy at a staffed Claro store rather than a busy kiosco where nobody wants to handle the paperwork.
Strengths
Weaknesses
Personal
Personal: The Speed Leader in the City
Fastest urban data and the strongest signal underground on the Subte
Personal posts the highest average download speeds in the country and covers roughly 90 percent of the Buenos Aires Subte on 4G, so if your trip is city-heavy it is a strong choice. It is also the one carrier with a genuine store inside Ezeiza, at Terminal A opposite check-in desk 40, though it takes cards only and does not accept cash. The weakness is the far south: below the wine country Personal's map thins out faster than Claro's, so it is the wrong pick for a Patagonia-focused route.
Strengths
Weaknesses
Movistar
Movistar: The Balanced All-Rounder
Solid everywhere the tourists go, and the network most travel eSIMs quietly use
Movistar is the comfortable middle option: quick in the cities, dependable on the main highways, and priced sensibly, with a 3 GB monthly bundle near 4,800 pesos and 5 GB around 6,100 pesos. It rarely tops a speed chart and it does not match Claro in the far south, but for a Buenos Aires, wine country, and Iguazu itinerary it is perfectly capable. Worth knowing: Movistar is the network that Airalo and Nomad travel eSIMs actually connect to in Argentina, so if you go the eSIM route you are very likely riding Movistar without ever visiting a shop. Movistar does not staff a store inside Ezeiza, so as a physical SIM it is a downtown or mall purchase rather than an arrival-day grab.
Argentina SIM Plans Compared
| Carrier | Sample Plan | Price | Coverage | Best For |
|---|---|---|---|---|
| Claro | 25 GB + unlimited social, 30 days | ~22,000 pesos (~15 USD) | Best of the three toward Patagonia | Southern trips and heavy data users |
| Personal | Prepaid data bundle, a few GB | ~4,800 to 8,000 pesos | Fastest in Buenos Aires and the center | City stays and Subte commuters |
| Movistar | 3 GB, 30 days | ~4,800 pesos (~5 USD) | Good in cities and on main routes | Light users on a classic itinerary |
| Movistar | 5 GB, 30 days | ~6,100 pesos (~7 USD) | Good in cities and on main routes | Balanced two-week city trips |
Peso prices above reflect typical 2026 city-store rates. The exchange rate hovers near 1,460 to 1,500 pesos per US dollar, and crucially the informal blue-dollar rate now sits within a few percent of that, so paying by card no longer costs you a hidden premium the way it did in earlier years. Airport counters and any informal reseller will run higher, so treat this table as your reference before you pay.
Where to Buy a SIM in Argentina
A Staffed Carrier Store in the City (Best for Registration)
Full Claro, Personal, and Movistar stores in Buenos Aires, on Avenida Corrientes or inside malls like Abasto and Alto Palermo, are the place to buy. Staff can register a tourist line against your passport and sort out the tax-ID hurdle, which a rushed kiosco often will not. This is where you set up the network you will actually rely on.
The Personal Counter at Ezeiza
If you want a line the moment you land, Personal runs a store at Terminal A opposite check-in desk 40. It is the only real carrier counter inside Ezeiza now, and it takes cards only, so do not count on paying in cash. Prices are higher than in town, and physical SIM stock at the airport has been shrinking.
Kioscos and Supermarkets for Top-Ups
Once your line is active, the ubiquitous kioscos, plus pharmacies and supermarket chains like Coto and Carrefour, handle recargas through a quick code. This is the easy way to add credit on the road, far simpler than tracking down a carrier shop in a small Patagonian town.
Test the Data Before You Leave the Counter
Whichever store you use, put the SIM in and load a map or a website before you walk out. Confirm the plan size and validity match what you paid, and keep the receipt. A minute of checking beats discovering a dead line an hour later with no easy way back.
eSIM or Local SIM for Argentina?
| Factor | Travel eSIM | Local SIM |
|---|---|---|
| Setup time | A few minutes, done before your flight | 15 to 30 minutes at a store, longer if the tax-ID rule bites |
| Registration | None | Passport and often a local tax ID required in person |
| Network | Movistar (Airalo, Nomad) or Claro (Holafly) | Claro reaches deepest into Patagonia |
| Price (week of data) | ~8 to 20 USD depending on data and unlimited | ~5 to 15 USD, often with calls bundled |
| Best for | City and classic-circuit travelers who want zero hassle | Long stays, a local number, or a deep Patagonia leg |
For a trip built around Buenos Aires, Iguazu, Mendoza, and a couple of domestic flights, a travel eSIM is the easier call: install it before you fly, land connected, and skip the passport-and-tax-ID stall entirely. The case for a local SIM is narrower than it used to be, because the blue-dollar discount that once made peso plans a bargain has mostly disappeared. Where a local Claro SIM still earns its place is a long, southern-heavy trip where its Patagonia reach outclasses the Movistar footprint most eSIMs use, or when you genuinely need an Argentine number for local calls.
Argentina Connectivity Tips
Practical Advice for Staying Online in Argentina
Take Claro south: For Bariloche, El Calafate, El Chalten, and Ushuaia, Claro is the network with the best odds of signal on remote roads. Even then, download offline maps before you leave town, since the trekking trails have dead zones on every network.
The blue-dollar era has faded: Carrying US cash to swap at the informal rate used to slash the effective price of everything, SIMs included. In 2026 that gap is only a few percent, so a card payment at the market rate is fine and the old cash hustle no longer saves much.
WiFi carries a lot of the load: Hotels, cafes, and even long-distance buses offer free WiFi, so your mobile data mostly covers maps, ride apps, and messaging while you move between places.
Bring your passport, expect a tax-ID question: Registration happens at purchase, and staff may ask for a DNI or CUIT you do not have. A staffed carrier store handles tourists better than a busy kiosco.
Top up at any kiosco: Adding credit through a recarga code at a corner kiosco or supermarket is quick and everywhere, which matters on a long provincial route.
Frequently Asked Questions
Can a tourist even register a prepaid SIM in Argentina?
Usually yes, but it can be fiddly. Carriers ask for your passport and often a local DNI or CUIT tax number that visitors do not carry. Some staffed stores will activate a line against a passport alone, while a busy kiosco may decline. Buy at a full Claro, Personal, or Movistar store and allow extra time. A travel eSIM avoids the registration process completely, which is why many visitors skip the local SIM.
Which Argentine network is best if I am going to Patagonia?
Claro, clearly. It runs the widest footprint toward the far south, so it is the network most likely to keep a signal in Bariloche, El Calafate, El Chalten, and Ushuaia, and out on long stretches of Ruta 40. Personal is fastest in Buenos Aires but thins out below the wine country, and Movistar sits in between. If your route is southern-heavy, choose Claro locally or a Claro-based eSIM like Holafly, and carry offline maps for the trails.
What does a tourist data plan cost in pesos right now?
The SIM itself is roughly 500 to 2,000 pesos, then you add a bundle. Movistar sells 3 GB for 30 days near 4,800 pesos and 5 GB around 6,100 pesos, about 5 to 7 US dollars. Claro's standout tourist bundle is 25 GB with unlimited WhatsApp and social apps for around 15 dollars. At roughly 1,480 pesos per dollar in 2026, those peso prices convert to modest sums, and card payment no longer carries a blue-dollar penalty.
Is there anywhere to buy a SIM the minute I land at Ezeiza?
Only Personal runs a real counter inside Ezeiza, at Terminal A opposite check-in desk 40, and it accepts cards only, not cash. Movistar has no store there and Claro's airport presence is limited, so on-arrival physical SIM options have shrunk. If you want to be connected the second you land, an eSIM installed before departure or the Personal counter are your two realistic choices.
For a two-week Argentina trip, should I get a local SIM or an eSIM?
For a classic loop through Buenos Aires, Iguazu, Mendoza, and a domestic flight or two, an eSIM is easier: it installs before you fly, connects on arrival, and skips the passport-and-tax-ID stall. A local Claro SIM earns its place mainly on a long, Patagonia-heavy route where its southern reach beats the Movistar network most eSIMs use, or if you specifically need an Argentine phone number.