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What do I need before buying an eSIM?

Author: eSIMonline Editorial · eSIMonline editorial teamLast updated: September 5, 2026
What do I need before buying an eSIM?

An eSIM-capable device that is not carrier-locked, your destination and travel dates, and Wi-Fi at installation time. That is all.

  • A device that supports eSIM: check with our device checker
  • A device that is not carrier-locked, since a locked one may refuse another provider's profile
  • Your destination and firm dates, so the validity covers the trip
  • Wi-Fi at install time, which should be before you leave

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