Using an eSIM in Buenos Aires

What Buenos Aires is like on a phone

Buenos Aires starts late and finishes later: restaurants fill at ten and the central districts still have people walking well past midnight. Visitors tend to explore one barrio at a time, since each has a clear character of its own, leaning on maps and ride-hailing through most of the day. Downtown the line is continuously usable, but the underground — the subte — drops between stations, and that is worth planning around from the start.

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Most international flights land at Ezeiza (EZE) outside the city, while Jorge Newbery (AEP) beside the river handles mainly domestic and neighbouring-country routes. Turn the eSIM on in the immigration queue and check that data roaming is on. If you have an onward domestic flight, confirm which airport it leaves from: the two are on opposite sides and the transfer between them takes a long time at peak hours. The road into town is connected throughout.

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Palermo, Recoleta and the centre are continuously good. Many subte platforms have a signal, but the tunnel runs drop in patches and differ from line to line. Thick-walled European-style buildings with interior courtyards weaken the line in some rooms. The reclaimed dockside, open to the water, works well. Heading out of town across the pampas there are long stretches that genuinely thin, and the river boat towards Uruguay softens mid-crossing — download the maps beforehand, always.

What a day here costs in data

A normal day walking several barrios and calling a car home at night tends to run about 1.5–2GB, because the map stays open a long while and you look up restaurants constantly. Dinner is late here, so there is usually a ride home in the small hours — which needs a line that simply works more than it needs speed. Filming a tango performance and sending it immediately climbs fast, so keep that for the room, and download the whole city offline, which helps a great deal in the subte.

Districts travellers ask about

• Palermo — A broad district of restaurants and cafés split into several sub-quarters, with an even line and the easiest daytime working conditions in the city.
• Recoleta and Retiro — Thick-walled old buildings and a cemetery of narrow lanes: the street is good, though between the monuments the line softens a little.
• San Telmo and La Boca — Cobbles and a Sunday market that packs solid, with speeds falling through the afternoon — save your meeting point and address before you walk into the crowd.
• Puerto Madero — The redeveloped docks, where open water keeps the line strong and cars easy to get — a good place for a meeting or an evening call home.

Day trips out of the city

• Tigre and the delta — The train out is connected throughout, but once the boat turns into the tree-lined side channels the line weakens plainly — agree a return time with the boatman first and save your landing stage on the device.
• Colonia in Uruguay by river ferry — Mid-river the line softens, and whether it works on the far bank depends on the country list on the plan page — check it before you go. Entry paperwork changes from year to year, so ask the immigration authority directly.
• An estancia out on the pampas — The road out is long with stretches that genuinely thin, and on the farm itself you may be down to a message or nothing at all — download maps, confirm your return pickup in advance and tell your accommodation when to expect you.