Authoritative answers to the questions that matter.
Fundamentals
What is an eSIM?
An eSIM is a digital SIM card embedded in your device. Carrier profiles are downloaded via QR code rather than physically inserted. Governed by GSMA SGP.22 standard.
How do I verify eSIM support?
iPhone: Settings → General → About → EID. Android: Settings → About Phone → EID, or dial *#06#. A 32-digit EID confirms eSIM hardware.
Can I use eSIM alongside my regular SIM?
Yes, on dual-SIM devices. The standard traveler configuration: home SIM for calls and texts + eSIM for local data.
How many eSIM profiles can I store?
Most devices support 5-20 stored profiles simultaneously, with one active at a time. Store plans for multiple countries and switch as needed.
Activation
Do I need internet to activate?
Yes. Initial profile download requires internet (Wi-Fi recommended). Once installed, the profile can be activated without internet.
Can I install before traveling?
Yes, and highly recommended. Install at home over reliable Wi-Fi. The plan activates when you arrive and enable it.
Europe
Does eSIM work across all EU countries?
Regional plans typically cover all 27 EU member states. EU Roam Like at Home ensures domestic rates across member states for EU-regulated carriers.
What about Switzerland and the UK?
Outside the EU. Many European plans include them. Verify your specific plan's coverage list before travel.
Does eSIM support 5G?
Yes, if your device and plan support 5G. Netherlands, Sweden, Germany have the most advanced 5G. Set network mode to 5G/LTE in Settings.
