This particular CoreESIM plan is strictly geo-fenced for use only within Paraguay. If your itinerary includes visiting Iguazu Falls, which often involves crossing into Brazil (Foz do Iguaçu) or Argentina (Puerto Iguazú), your CoreESIM connection will cease at the border. For multi-country travel in the Triple Frontier, CoreESIM offers regional plans designed to provide continuous connectivity across Paraguay, Brazil, and Argentina.
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Is this CoreESIM valid for the 'Triple Frontier' region, specifically extending into Brazil and Argentina near Iguazu Falls?
Updated April 22, 2026
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