Compare roaming, a local physical SIM and an eSIM for a trip abroad, with a thirty-second rule for choosing.
There are three ways to get data abroad: keep your home SIM and pay roaming, buy a physical SIM after you land, or add an eSIM before you fly. The right answer depends on how long you are away, how many regions you visit, and how much you value arriving with a working connection.
Planning the trip? See all our travel eSIM data plans and prices before you buy a plan.
The three options side by side
| Roaming | Physical SIM | eSIM | |
|---|---|---|---|
| Setup | None | Shop visit, tray, new number | Scan before you fly |
| Cost shape | Daily pass or per-megabyte | Cheapest per gigabyte | Fixed price, paid in advance |
| Your own number | Yes | No - SIM is removed | Yes, stays active |
| Best for | A day or two | Weeks in one region | Short trips, multi-region routes |
Roaming: the default, and the one that surprises people
Roaming means your home carrier connects you through a partner network abroad and bills you at its own rates. It needs no setup, and many carriers now offer a daily pass. The catch is the price once you leave the plan's scope, and the fact that outside a pass, some carriers bill per megabyte. If you only need a few hours of coverage, a day pass is fine. For a two-week trip, it is usually the most expensive option of the three.
Physical SIM: cheapest per gigabyte, most friction
Buying a local prepaid SIM at the airport or in town is often the cheapest data per gigabyte, and it gives you a local number. You pay for it with time: queues, passport registration in some regions, and a phone number nobody has. For a stay of a month or more in one region, that trade is usually worth it. For a five-day city break, it rarely is.
eSIM: the middle path, and usually the best fit for trips
- Buy before you fly and it can be installed at home on Wi-Fi, then switched on when you land.
- One plan can cover many regions, so a multi-stop itinerary needs one purchase, not four.
- Your own SIM stays inside the phone, so bank codes and messages keep arriving.
- No plastic, no tray, no queue - which also means it works for handsets with no physical tray.
How to decide in thirty seconds
- Away for under a month, one region: buy a local physical prepaid SIM.
- Away for a few days to a few weeks, or visiting several regions: add an eSIM before you leave.
- Away for a day, or you simply want your home plan to keep working: use a roaming pass.
- Phone has no physical tray at all: eSIM is your only option.
See the full list of regions covered on our coverage page.
eSIM, physical SIM or roaming: which to pick
- Roaming: no setup, usually the priciest for a long trip.
- Physical SIM: cheapest per gigabyte, needs a shop visit and a new number.
- eSIM: install before you fly, works across regions, keeps your own number live.
- Match the choice to trip length and the number of regions you will visit.
Frequently asked questions
Is roaming always more expensive than an eSIM?
Not always - a daily roaming pass can be reasonable for a very short trip. It becomes expensive as the days add up, or once you leave your carrier's included regions.
Can I keep my number while using a travel eSIM?
Yes. Keep your own line active for calls and messages, and set the travel profile as the line used for mobile data.
Can one eSIM cover several regions on one trip?
Yes. Regional plans exist that cover many destinations under one data allowance; check the plan's coverage list before buying, because it varies.
Do I need to remove my home SIM to use an eSIM?
No - and you should not. Leaving it in place is what keeps your number and one-time codes working.
What if my trip is longer than the plan's validity?
Travel plans are usually fixed-term rather than recurring. For a long stay, a local prepaid SIM with a monthly top-up is normally the better shape.