Every eSIM shop sells the same three shapes of plan, and the names do most of the explaining:
- Local — one country.
- Regional — a group of countries, like Europe or Southeast Asia.
- Global — a long list spanning continents.
The pricing runs in that order too. Local is cheapest per gigabyte, global is the most expensive, and regional sits in between. The question is which one fits your trip.
The rule
Buy the narrowest plan that covers everywhere you will actually need data.
That is the whole decision. The rest of this article is the detail behind it.
When local is right
You are going to one country and staying there. A week in Japan, a fortnight in Turkey, a long weekend in Portugal.
Local plans are the best value by a wide margin because the provider only has to buy capacity from carriers in one market. If your trip is genuinely single-country, paying for a regional plan is paying for coverage you will not touch.
One thing to check: airport transfers do not count. Changing planes in Doha on your way to Bangkok does not mean you need Qatar coverage. You will be behind security on airport Wi-Fi. Do not upgrade your plan for a three-hour layover.
When regional is right
You are crossing borders. Three cities in Europe, an island-hopping trip in Greece and Turkey, a Southeast Asia loop.
The maths is straightforward: if you would otherwise buy three local plans, one regional plan is almost always cheaper and it is certainly less hassle — one installation, one balance to keep an eye on, no switching profiles on a train.
Check the country list before you buy, not after. Regional plans are defined by a specific list, and the boundaries are not always where you would guess. “Europe” plans frequently include Turkey but exclude Russia; some include the UK and Switzerland, others do not. If one country on your route is missing, the plan does not do what you need.
When global is right
Honestly, less often than global plans get sold.
Global makes sense when you are genuinely crossing regions on one trip — a work trip that takes in New York, London and Singapore in a fortnight — or when your plans are unsettled enough that you do not yet know where you will be.
If you are visiting four countries on one continent, a regional plan for that continent is cheaper. Global is for people whose itinerary refuses to sit inside one region.
What none of them include
Two gaps worth knowing about:
Cruises and flights. Ships at sea and planes in the air use satellite connections billed separately and expensively. No travel eSIM covers them. If you see signal in the middle of the ocean, that is the ship’s satellite service, and connecting to it can be very costly.
Calls and texts, usually. Most travel eSIMs are data only. You get internet, not a local number. Calls over WhatsApp, FaceTime or Signal work fine because they run on data.
How much data, and for how long
Plans are sold as an amount of data valid for a number of days, and both halves matter. A 10 GB plan valid for 7 days is not a 10 GB plan — it is “up to 10 GB, and whatever is left on day 8 is gone”.
The validity clock almost always starts when the eSIM first connects to a network, not when you buy it. Installing at home a week early is fine and is what you should do. Just do not be surprised if it activates the moment you land.
For sizing the data itself, see How Much Data Do You Actually Need.
A worked example
Ten days: four in Rome, three in Athens, three in Istanbul.
- Three local plans: three purchases, three installs, three balances.
- One Europe regional plan that lists Italy, Greece and Turkey: one of each.
The regional plan wins on both price and effort. But it only wins because Turkey is on the list — and that is exactly the thing to verify before paying.