How much data do I need for a trip to Argentina?

For a 7-day Buenos Aires city trip with maps, ride-hailing, WhatsApp, and casual photo uploads, 2–3 GB is enough; a 14-day trip combining Buenos Aires with Mendoza or Iguazú typically needs 5–10 GB; and a 3-week itinerary spanning Buenos Aires, Patagonia, and the northwest with regular Instagram or video calls home is better served by 20 GB. Long-distance bus rides between cities (Buenos Aires to Bariloche is roughly 20 hours) consume more data than expected because onboard Wi-Fi is unreliable — plan to tether from your phone on those legs.