Argentina stretches almost 3,700 km from north to south — from subtropics to Patagonia — and network quality varies a lot across the country. Here's which eSIM to get for Buenos Aires and longer routes.
For a week in Buenos Aires with navigation and social media, 3–5 GB is usually enough. For a trip that includes Patagonia or Iguazu Falls with active navigation along the way, get 10 GB or more.
Coverage is fast and reliable almost everywhere in Buenos Aires. In Patagonia and other sparsely populated regions in the south, coverage can be noticeably weaker simply due to low population density — it's worth downloading offline maps for those routes.
Install the profile at home ahead of time, then turn on data roaming after you land in Argentina, so the plan's validity period doesn't start counting down early.