eSIM for international layovers

It depends on what you have to do in that window. If you are only walking to the next gate and nobody is waiting to hear from you, possibly not. But if something has to be confirmed with someone at the destination, or the onward flight could change, having data lets you deal with it on the spot. Many travellers buy a small transit-country plan as insurance rather than expecting to use it fully. The other option: if your itinerary already includes a regional plan that covers the transit country, you need nothing extra.

Only in the countries on that plan's own list, not in every country people would consider part of the region. Each plan defines its own country list and those lists differ between plans. Before buying, check that the country you are stopping in appears on the list. If you are unsure whether your route is fully covered, send us the itinerary details and ask before you buy.

Install the profile in advance on Wi-Fi you trust, but switch the line on after you land in the transit country. Installation and activation are separate steps, and keeping them separate stops the validity period running before you need it. How that period starts depends on the supplier and the specific plan, so read the detail on the one you chose before you travel.

There is no certain answer, because it depends on the validity and size of the plan you bought and how heavily you use it overnight. What you can do is check the remaining allowance on the phone before deciding, and only top up if it is low. Buying more mid-trip needs an internet connection, which airport or hotel Wi-Fi can provide at that moment. If you get stuck, message us on LINE or by email and we will work through it from the details you send.

Not entirely, no. What most people do is leave the home line on for calls and SMS — bank OTPs, for instance — while turning off its data roaming, and let the eSIM carry the data. Be aware that receiving calls or messages abroad may still be charged at your original operator's rates, which is something to confirm with them directly before you travel.

Technically yes, but you need an internet connection to order and install the profile — the very thing you may not have. If the airport Wi-Fi works you can manage it, but you will spend limited time on sign-in pages and installation. Doing it before departure is far easier, and if anything goes wrong you have time to ask and fix it before you fly.