Argentina is enormous, and its mobile coverage reflects that. Buenos Aires, Mendoza and Córdoba are well covered; Patagonia's towns are covered; the long roads and trails between them often are not. Travel data is mid-priced, and the biggest mistake visitors make is buying a short-validity bundle for a long trip.
Short answer: buy a plan whose validity covers your whole trip, install it before you fly, and download offline maps before any Patagonia hike or long drive.
What an Argentina eSIM costs
At the time of writing (October 2026), Wanderly's Argentina plans start at $3.99 for 1GB, with 5GB around $8. The median across data-only Argentina plans is about $1.30 per GB — just under the $1.43 median across 187 countries in the Wanderly eSIM Price Index.
Read the validity carefully. Several of the cheapest per-GB Argentina bundles last only three to five days. On a two- or three-week trip covering Buenos Aires, Iguazú and Patagonia, a longer-validity plan is worth the higher per-GB price.
Networks and coverage
Argentina's main networks are Personal, Claro and Movistar. Travel eSIMs connect to a partner network automatically.
- Buenos Aires (Palermo, San Telmo, Recoleta): strong 4G and growing 5G.
- Mendoza and the wine regions: good in the city and Luján de Cuyo; patchy at some high-altitude bodegas.
- Iguazú (Puerto Iguazú and the national park): good in town; variable on the park trails.
- El Calafate and Perito Moreno: coverage in town; limited at the glacier.
- El Chaltén and Fitz Roy treks: coverage in the village; essentially none on the trails.
- Ushuaia: good in town; none in remote parts of Tierra del Fuego.
- Route 40 and long Patagonian drives: long stretches without signal.
How much data you need
| Trip | Suggested data |
|---|---|
| Buenos Aires week | 3–5 GB |
| Two weeks, Buenos Aires + Iguazú + Patagonia | 5–10 GB |
| A month across the country | 10–20 GB |
| Remote work | 20 GB+ |
Trekking days in Patagonia use almost nothing because there is no signal. Most data is used in cities and on travel days. See how much data you need for travel.
Argentina with Chile, Brazil or Uruguay
Crossing into Chile through Patagonia, visiting the Brazilian side of Iguazú, or taking the ferry to Uruguay? An Argentina plan will not cover those. See the best eSIM for Chile, the best eSIM for Brazil and the best eSIM for South America for regional options.
Setting it up
- 1Confirm your phone supports eSIM and is unlocked on our compatibility checker.
- 2Install the eSIM over WiFi before you fly — iPhone or Android steps.
- 3At Ezeiza or Aeroparque, select the eSIM for mobile data and turn on data roaming for that line.
FAQ
How much does an eSIM for Argentina cost? Wanderly Argentina plans start at $3.99 for 1GB, with a median of about $1.30 per GB.
Is there signal in Patagonia? In towns like El Calafate, El Chaltén and Ushuaia, yes. On trails and long roads such as Route 40, often not.
Does an Argentina eSIM work on the Brazilian side of Iguazú? No. The Brazilian side is in Brazil, so you need a plan that covers Brazil.
Which networks do travel eSIMs use in Argentina? They connect to a partner network — Personal, Claro or Movistar — automatically.
Can I keep WhatsApp on my number? Yes. WhatsApp keeps your existing number and runs over the eSIM's data.
Taking the ferry to Colonia? See the best eSIM for Uruguay — an Argentina plan usually does not cover it.