CoreESIM's country-specific plans are precisely geo-fenced to their designated territories. This particular plan is provisioned exclusively for network access within Portugal. If your itinerary includes travel into Spain, for instance, from the Algarve to Seville or from Lisbon to Madrid, your data connectivity will cease upon crossing the border. For multi-country Iberian travel, CoreESIM recommends a regional Europe plan to ensure uninterrupted service across both nations.
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Is this CoreESIM Portugal plan valid for cross-border use in Spain?
Updated April 22, 2026
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