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eSIM vs Physical SIM vs Roaming: Comparing Ways to Stay Connected Abroad

Tap through each option to compare and find the best fit for your trip.

  1. Carrier roaming

    Your home carrier extends your existing number and SIM to work abroad through a roaming add-on. No SIM swap needed, and you keep receiving calls and texts on your usual number.

  2. Local prepaid SIM

    Buying a prepaid SIM from a local carrier at the airport or a shop and swapping it in. Usually cheaper data than roaming, but your home number stops receiving calls and texts while it's in.

  3. Travel eSIM

    A data-only eSIM for your destination, bought through an app or website and installed by scanning a QR code. Since it doesn't require removing your physical SIM, you can keep your home number active while also using the eSIM for data.

  4. How to choose based on your situation

    If you need to keep receiving calls on your home number, roaming; if minimizing data cost matters most, a local SIM; if you want to keep your home number and still get cheap data, a travel eSIM.

  5. Using more than one at once

    On a device that supports it, the most flexible setup is leaving your physical SIM in for your home number and adding a travel eSIM for data, so you get both at the same time.

There's no single right answer -- it depends on how you travel

Whether receiving calls on your home number is urgent, or minimizing data cost matters more, changes which option makes sense. eSIM-capable devices have become common enough that running a physical SIM and an eSIM side by side is now a popular default.

Be careful with public Wi-Fi while traveling too

Airport and hotel public Wi-Fi networks abroad can be less secure than they look, so it's worth being cautious about what you do on them and turning off auto-connect to unknown networks when you don't need it.

Frequently Asked Questions

If I switch to a local SIM, will I miss texts sent to my home number?

Yes -- once you remove your home SIM, calls and texts to that number can't reach you. If you need to receive an important verification code, consider roaming or a dual eSIM setup instead.

Where do I buy a travel eSIM?

Several apps and websites sell destination-specific eSIMs -- pick your country and data amount, and you'll get a QR code to install. It's convenient to buy and install it before you leave.