What is an eSIM? A plain-English guide
5 min read
An eSIM is a SIM card that's built into your phone as software. Instead of pushing a plastic chip into a tray, you scan a QR code and your phone downloads a 'profile' — the same credentials a physical SIM carries, delivered digitally in about a minute.
How is it different from a normal SIM?
- No physical object — nothing to buy at a shop, lose, or swap with a paperclip.
- Delivered instantly — a QR code by email replaces a trip to a kiosk.
- Multiple profiles — modern phones store several eSIMs and can run two lines at once.
- Your main SIM stays in — travel data runs on the eSIM while your home number keeps receiving calls and texts.
Which phones support eSIM?
Almost every mainstream phone from the last five years: iPhone XS and newer, Google Pixel 3 and newer, Samsung Galaxy S20 and newer, plus most recent flagships from other brands. The phone must also be carrier-unlocked — a phone bought on a carrier contract may block other profiles until it's paid off.
Why travelers switched to eSIMs
Roaming with your home carrier is expensive, and buying local SIM cards means airport queues and — in most countries — passport registration. A travel eSIM installs before you fly and connects the moment you land, at a flat prepaid price. And because travel eSIMs are provisioned internationally, local SIM registration laws don't apply: no forms, no documents.
What an eSIM doesn't do
Travel eSIMs are data-only: they don't include a phone number. In practice this rarely matters — WhatsApp, Signal, Telegram and every map or booking app run on data. Your home number stays reachable on your physical SIM if you keep it enabled.
Ready to try one? Our plans need no account and no ID — pick a destination, pay in crypto, and scan the QR code that lands in your inbox.