Frequently Asked Questions
Authoritative answers to the questions every eSIM traveller asks.
What is eSIM and how does it differ from a physical SIM?
An eSIM is a digital SIM embedded in your device. Carrier profiles are downloaded over the air rather than inserted physically. For travellers, this eliminates the need for airport SIM kiosks entirely.
Does my device need to be unlocked?
Yes. Your device must be carrier-unlocked to use a third-party eSIM plan. Contact your carrier to request an unlock — most do so free of charge after the contract period.
Can I retain my home number while using a travel eSIM?
Yes — use Dual SIM functionality. Your home SIM handles calls and texts; your travel eSIM handles data. Configure in cellular settings.
When is the optimal time to install an eSIM?
At home, on WiFi, before departure. This ensures immediate connectivity upon landing and eliminates airport troubleshooting.
Does one eSIM cover all of Europe?
Many regional plans cover 30–50 countries. Always verify the specific country list, particularly for Switzerland, Norway, Iceland, and the UK.
What happens if I accidentally delete my eSIM?
The original QR code becomes invalid. Contact your provider immediately — most can reissue a new QR code. Always save a screenshot of the QR code before scanning.
How many eSIM profiles can a device store?
iPhone 15/16 series: up to 8 profiles. Most Android devices: 5–10. Only 1–2 can be active simultaneously, but stored profiles can be switched without re-downloading.