SIM card and internet in Argentina: a full guide for the traveler
Connectivity in Argentina is its own story. On one hand, the country is huge, cities are far apart, and without internet it's hard: a taxi via app, a translator, maps, contact with a guide. On the other, a local SIM requires a passport, an Argentine address, and sometimes an hour of fussing at the operator's office. In this article I break down all the working options for a tourist in 2026: from regular SIM to eSIM and WiFi in Ushuaia.
Three operators: who is who
There are three big mobile operators in Argentina, and the choice between them depends on where you're going.
Claro — a Mexican giant, owned by América Móvil. In Buenos Aires all three work equally well, but as soon as you head into the provinces — and especially Patagonia — Claro starts winning. In Ushuaia, El Calafate, and El Chaltén, Claro has the most stable 4G coverage. On Beagle Channel cruises, the signal is most often picked up on Claro. For a tourist heading to Patagonia, it's the no-alternative pick.
Personal (a Telecom Argentina brand) — second in coverage. In Buenos Aires and major cities it works great, but in the mountain areas of Patagonia it's worse than Claro. Pricing is similar.
Movistar — Spain's Telefónica. Good in the capital and on the coast; in Ushuaia and the national park the signal is weaker. If you're only flying to Buenos Aires and the Iguazú falls — any of the three will do.
The bottom line is simple: going to Patagonia — take Claro. Not going past Buenos Aires — take anything, you won't notice the difference.
How much a SIM costs in Argentina
Prices in 2026 look like this:
- Starter pack (the SIM itself) — about 5–10 USD equivalent in pesos
- Monthly plan with 20–30 GB of data — 10–15 USD
- Unlimited domestic calls — usually included in the plan
- WhatsApp — often not counted against data (zero-rated)
In total: for 15–25 USD you get a month of connectivity with fast internet and a local number. That's many times cheaper than any roaming from Russia or Europe.
Top-up is done via the operator's app (Mi Claro, Mi Personal, Mi Movistar) or through kiosks with a Pago Fácil or Rapipago sticker. Foreign bank cards aren't always accepted — better to have pesos in cash or a local card.
Where to buy a SIM: the procedure
This is the fiddly part. By law, activating a local SIM requires:
- Passport — original, mandatory
- DNI or an address of residence in Argentina — sometimes a hotel address is enough, sometimes not
- Activation at the operator's office — takes 30 minutes to 2 hours
The best place to buy a SIM is in Buenos Aires right after landing — there are plenty of official Claro, Personal, Movistar stores. There are kiosks at Ezeiza airport, but prices are higher and the lines longer. Addresses of downtown stores are easy to find on Google Maps under "Claro oficial."
There are stores in Ushuaia too, but the choice is smaller, and if your program is short (3–5 days) — the hassle outweighs the benefit.
What to say at the store:
- "Quiero comprar un chip prepago para turista" — "I'd like to buy a prepaid SIM for a tourist"
- Show your passport, give the hotel address
- Ask for help with activation and topping up the first plan
The consultants usually help willingly — foreign tourists are normal for them. But not all of them speak English, so Google Translate is your friend.
eSIM: the no-paperwork-no-lines option
If you have a modern phone (iPhone XS and newer, Samsung Galaxy S20 and newer, Google Pixel 3 and newer) — an eSIM is the best option for a short trip.
How it works: you buy the eSIM online before flying out, get a QR code by email, scan it in the phone settings, and in 2 minutes you have active Argentine internet. No passport, no offices, no Argentine address.
Three tested services:
Airalo — the most popular worldwide. The Argentina plan for 7 days with 3 GB is around 8–10 USD; 30 days with 10 GB — 18–22 USD. Works on the Claro network, coverage in Patagonia is decent.
Holafly — a European service with unlimited data. More expensive than Airalo: 7 days unlimited — around 25 USD, 15 days — 35 USD. The convenience is not having to track gigabytes.
Saily (from NordVPN) — relatively new, prices are competitive. 5 GB for 30 days — around 15 USD.
The downside of eSIM: you don't get an Argentine number. So a taxi can't call you, an Argentine bank SMS can't reach you. But for a tourist using WhatsApp and Google Maps, that's plenty.
WhatsApp — Argentina's main app
This is important to understand before you fly out: in Argentina absolutely everyone uses WhatsApp. Hotels confirm bookings on WhatsApp. Guides send meeting points on WhatsApp. Restaurants take reservations on WhatsApp. Even a family doctor will send you lab results on WhatsApp.
If you don't have WhatsApp installed — put it on before departure. Sign in by phone number (a Russian number works too, just make sure the SMS with the code comes through on initial setup).
For communication with Magellania, everything goes through WhatsApp. It's faster and more reliable than email.
Roaming: expensive and not worth it
If you flew in with a Russian or European SIM and didn't turn off roaming — turn it off. International roaming prices in Argentina at most operators bite:
- Russian operators (MTS, Beeline, Megafon): from 10 USD per MB of data without an active plan
- "BiTravel" or "Foreign" packages: a 1–2 GB daily bundle for 10–15 USD
- EU operators: roam-like-at-home doesn't apply in Argentina, tariffs are 5–15 USD per MB
A week-long trip on roaming can easily ring up 100–200 USD just for internet. Airalo eSIM at 10 USD solves the same problem for a fraction.
WiFi in Argentina: where you'll find it and how good
Hotels in Ushuaia — almost everywhere free WiFi at 20–50 Mbit/s. At premium hotels (Arakur, Las Hayas) — up to 100 Mbit/s. That's enough for video calls, Netflix, work calls.
Hostels and B&Bs — usually WiFi is there, but speed is 5–15 Mbit/s. Fine for messaging and email, sometimes laggy for video.
Cafés and restaurants in downtown Ushuaia — almost all have free WiFi; ask the waiter for the password.
Ushuaia airport (USH) — free WiFi at decent speed, registration by email.
Ezeiza airport (EZE) in Buenos Aires — 30 minutes of free WiFi, then it asks for registration. Works fine.
Long-distance buses — WiFi is advertised, but in practice it works only in big cities. Drops out on mountain routes.
Connectivity on tours: where there'll be internet, where there won't
This is the part travelers often underestimate. In Ushuaia civilization ends fast.
Beagle Channel (boat trips) — signal holds for the first 30–40 minutes from Ushuaia port (view of the Les Éclaireurs lighthouse), then drops. On the way back it returns. If you're expecting an important call — better warn people you'll be offline 2–3 hours.
Tierra del Fuego National Park — signal at the entrance and parking lot; in the park's interior (Lake Roca, the Lapataia trail) it drops out in places.
Laguna Esmeralda (trek) — no signal on almost the whole trail. It returns only when you're back on the highway.
4x4 lakes — at viewpoints and at some lakes Claro works; in the valleys between mountains it doesn't.
Martial glacier — signal at the bottom station and parking; at the top points it's weak.
Pre-Cruise program (3 days before an Antarctic cruise) — everywhere you'll be has signal. Antarctica is its own story; only satellite works there, and it's paid.
Apps worth downloading offline before the trip
Even if you have a SIM, on parts of the route there'll be no internet. Prepare in advance:
- Maps.me or Google Maps — download offline maps for the Tierra del Fuego and Ushuaia area
- Google Translate — the offline Spanish dictionary weighs 50 MB, saves you in provincial cafés
- XE Currency — for converting pesos into USD/EUR/RUB, works offline
- WhatsApp — mandatory, the main communication channel in Argentina
- Uber / Cabify — taxis in Buenos Aires
- Mi Claro — Claro's app if you bought their SIM
Do you need a VPN
For a tourist — no. Argentina doesn't block WhatsApp, Telegram, Facebook, or YouTube. Google and Apple Pay work (if your card supports them). Russian sites like Gosuslugi open fine.
A VPN may be needed in two cases: if you need Russian streaming services (Kinopoisk, ivi) tied to a Russian IP, or if your bank's web app won't let you in from a foreign IP. In that case any reliable VPN works: NordVPN, ExpressVPN, AdGuard VPN.
Emergency numbers and connectivity without a SIM
Even without a SIM, Argentine emergency services work on a phone:
- 911 — general emergency line (police, ambulance, fire)
- 107 — ambulance
- 100 — fire
- 101 — police
The call goes through any available network; the operator answers in Spanish. They don't always speak English — if the situation allows, ask someone nearby to help with translation.
What to choose in the end
Quick cheat sheet:
- 5–10 days, Patagonia/Ushuaia only — Airalo or Holafly eSIM, 10–25 USD
- 2–4 week trip across all of Argentina — local Claro SIM in Buenos Aires, 15–25 USD/month
- Buenos Aires only, 3–5 days — eSIM or hotel WiFi; you can skip mobile entirely
- Family of 4 — one eSIM on the main navigator; the rest via hotel WiFi and tethering
For tours with Magellania, we're always reachable on WhatsApp. Before the tour — for program clarifications, during the tour — the guide is with you, after — for reviews and any follow-up. An Argentine SIM is convenience, not a necessity: the guide provides connectivity on the tour, and in Ushuaia hotel WiFi is enough.