It's highly recommended to activate your Cellesim eSIM before you even land at JFK, LaGuardia (LGA), or Newark (EWR). Purchase your eSIM online, receive a QR code via email, and scan it with your smartphone's camera. The setup process is quick and enables immediate data access upon arrival, letting you order an Uber or check directions right away.
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How do I set up my eSIM before arriving at JFK or LaGuardia?
Updated May 30, 2026
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