What is an eSIM? Everything You Need to Know in 2025

An eSIM (embedded SIM) is a digital version of a traditional SIM card. Instead of a physical card, it's embedded into your phone and can be activated remotely by your carrier.

eSIMs allow for faster carrier switching, improved security, support for dual SIM functionality, and are especially convenient for frequent travelers who want to avoid roaming charges.

Travelers can install data plans from international eSIM providers like Airalo or Holafly. No more hunting for SIM cards at airports—just scan a QR code and connect instantly.