To ensure you experience the best possible speeds and coverage across Puerto Rico, eSIMFlyer strategically partners with the island's premier Tier-1 mobile networks. This typically means connecting you to T-Mobile (Liberty PR), renowned for its extensive 5G footprint, or AT&T, offering robust 4G/LTE coverage. Our intelligent eSIM technology automatically selects the strongest available network, guaranteeing you fast, reliable data whether you're navigating the streets of Old San Juan, enjoying the beaches, or working remotely from a café.
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Which local networks does eSIMFlyer partner with in Puerto Rico?
Updated April 22, 2026
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