Buenos Aires: excellent coverage, unusually useful data

Coverage is not the story here

Signal is excellent throughout Buenos Aires, with 5G in Microcentro, Palermo and Belgrano. The only routine gap is underground: the older Subte lines lose signal briefly in the tunnel sections, and that is a minor irritation rather than a planning problem. The city's public BA WiFi network fills in reasonably well on top.

If coverage were all that mattered, this page would end here and tell you to buy on price. It is not, because Buenos Aires is one of the few cities where having data is worth measurably more than the data costs.

Two reasons the connection earns its keep

Getting around. Buenos Aires has one of South America's better transit systems, and between the Subte and the bus network you can cross a very large city cheaply. But most visitors default to Uber and Cabify, for a specific reason: the ride is verified, GPS-tracked and priced before you get in. InDriver is popular too. All three need a live connection at the moment you want a car, which is usually the moment you are somewhere unfamiliar and would rather not be standing still.

The exchange rate. Argentina's currency situation means the rate you get is a live number rather than a fixed one, and apps that track it — the blue dollar trackers, Dólar Hoy — are checked routinely by visitors before spending decisions. That is unusual. In most countries data buys you convenience; here it also has a direct bearing on what a meal or a taxi actually costs you. It is a reasonable argument for buying more data than you think you need rather than less.

How much to buy

A city trip where you are opening ride apps several times a day, checking rates, and navigating between barrios is not a 1 GB trip. From our Argentina data; the Airalo rows were read from Airalo's own site on 13 August 2026, and the Nomad row from Nomad's on 17 August 2026:

Argentina is expensive by regional standards, and its ladder stops at 20 GB — there is no 50 GB row here as there is for South Africa or New Zealand. The best verified rate we hold is $2.35 a gigabyte, on a 20 GB month at $47 — the same price from Nomad and from Airalo — against $3 a gigabyte for Airalo's 10 GB month. An earlier version of this page said Nomad sold that plan for far less. The $33 we printed, and the $1.65 a gigabyte we derived from it, had never been checked against Nomad, and were wrong.

For a week in the city, 5 to 10 GB is a sensible range. Below that you will find yourself rationing exactly the things this page has just argued are worth having.

Buying locally, and a note on networks

Argentina requires a passport for prepaid SIM registration, so a local purchase means paperwork and a counter rather than a two-minute transaction. Our figure for an Argentine airport SIM is about $15, and Personal, Movistar and Claro all sell prepaid. For a city stay that is a fair option, though the registration step is the main reason most visitors land with an eSIM already installed.

One thing to disregard while comparing: claims about which Argentine network a given eSIM uses. An earlier version of this page said every eSIM here rides Movistar or Claro, which nothing supported. Airalo, Nomad, Saily and Holafly publish no host network for Argentina at all. eSIMCard is the one seller that publishes networks anywhere, so its own listing is worth opening; the Movistar and Claro pair our data used to carry for it came from this site's generated text rather than from eSIMCard. In Buenos Aires it makes no practical difference — the city is well covered on everything — but it matters if you are continuing to Patagonia.

Full provider pricing is on the Argentina hub.