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What is an eSIM and how is it different from a physical SIM?

An eSIM is a SIM card built into your phone — no plastic chip, no SIM tray. Here's exactly what changes and what stays the same.

2 min read

An eSIM (embedded SIM) is a SIM card that lives as software on a chip already soldered inside your phone. Instead of swapping a plastic card, you scan a QR code or enter a few details and the eSIM profile downloads to your device in seconds.

What's the same as a physical SIM

  • Your phone connects to a real mobile network operator (Vodafone, Telefónica, STC — whichever provider partners with your destination).
  • You get a phone number for data; voice and SMS depend on the plan.
  • Data, speed, coverage, and signal behaviour are identical to a plastic SIM on the same network.

What's different

  • No shipping. The profile is delivered by email the moment your payment clears — usually within 30 seconds.
  • You can keep your home SIM in the same phone and switch between them. Most modern phones support 2 active SIMs at once.
  • You can store multiple eSIM profiles (e.g. one per country) and switch in Settings.
  • Lost phone? You can transfer the profile to a new device on most networks.

When eSIM doesn't make sense

  • If your phone is older than ~2018 it probably doesn't support eSIM. Use the compatibility checker on our homepage.
  • Some carriers in some countries still don't sell eSIM profiles to consumers — in those cases a roaming plan from your home carrier might be cheaper.

That's it. The rest is the same as any other SIM.

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