This specific CoreESIM data plan is provisioned for use exclusively within Uruguay. It does not include international roaming in Argentina. Travelers frequently crossing the Rio de la Plata via ferry services like Buquebus or Colonia Express from Buenos Aires, Argentina, should be aware that their connection will cease mid-river. For seamless connectivity in both nations, CoreESIM offers distinct plans or multi-country options covering the wider South American region.
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Is this CoreESIM plan valid for Argentina (Buenos Aires) or solely Uruguay?
Updated April 22, 2026
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