eSIM vs roaming vs local SIM: the best way to get data abroad
Roaming, a local SIM card or a travel eSIM? A clear comparison of price, setup, coverage and convenience — and which one fits your kind of trip.
In short
- Roaming is effortless but usually the most expensive way to use data abroad.
- A local SIM card gives local prices but costs time — a shop, a passport, a card swap.
- A travel eSIM gives local-level prices and is set up at home in minutes.
- For trips through several countries, a regional eSIM covers them all with one plan.
- Your own number keeps working with roaming and with an eSIM; with a local SIM only on a dual-SIM phone.
Contents
Every trip starts with the same small question: how will I get online when I land? Three answers cover almost every traveller — your home operator's roaming, a local SIM card, or a travel eSIM. Each works. They differ in what they cost you: money, time, or both.
Here is an honest comparison, so you can choose before you pack.
Option 1: roaming with your home operator
Roaming means your own SIM keeps working abroad through a partner network. Nothing to buy, nothing to install — you land, switch on your phone, and it connects.
The catch is the price. Roaming data is often charged per megabyte or in small daily packs, and abroad it can cost many times more than at home. An ordinary day of maps, photos and messages can quietly add up to a large bill that arrives weeks later. Some operators offer roaming packages that are cheaper, but they often include little data, cover only some countries, or expire after a day.
- Best for: a short stop when you need almost no data, or when your phone does not support eSIM.
- Watch out for: automatic app updates and photo backups — they can use roaming data in the background.
Option 2: a local SIM card
A SIM card from an operator in the country you visit gives you local prices, and often a local phone number too.
The catch is the effort. You need to find a shop or an airport kiosk, often show your passport, sometimes wait in a queue, and swap the card in your phone. While the local card is in, your own number does not work — unless your phone has two SIM slots. On a trip through several countries, you repeat all of it at every border, and you keep a pocket of tiny cards.
- Best for: a long stay in one country, especially when you need a local number for calls.
- Watch out for: airport kiosks, which are convenient but often pricier than shops in town.
Option 3: a travel eSIM
A travel eSIM is a data plan you buy online and install in a few minutes by scanning a QR code. You choose the country or region, the amount of data and the number of days, and pay once.
What makes it different: it is set up before you leave, and it is added as a second line — your own SIM and number stay in the phone. When you land, the eSIM connects to a local partner network at local-level prices.
- Best for: most trips — short or long, one country or several with a regional plan.
- Watch out for: your phone must support eSIM and be unlocked. Check it in a minute.
Side by side
| Roaming | Local SIM card | Travel eSIM | |
|---|---|---|---|
| Price of data | Usually the highest | Local prices | Local-level prices |
| Setup | None | Shop, passport, card swap | A few minutes at home |
| Online when you land | Yes | Only after you buy one | Yes |
| Your own number | Works | Only on a dual-SIM phone | Works |
| Several countries | At roaming prices | A new card in each | One regional plan |
| Surprise bills | Possible | No | No — you pay upfront |
What does it cost in practice?
Prices differ by country and operator, so here is a way to compare for your own trip rather than a single number:
- Look up your operator's roaming price for your destination — per megabyte, per day or per package.
- Estimate the data you will use. Our guide on how much data you need gives simple figures.
- Compare with a travel eSIM for the same country and the same amount of data on the packages page.
Which one should you choose?
- Your phone supports eSIM: a travel eSIM gives you local-level prices without the shop, and your own number in the same phone. It is the best fit for most trips.
- Your phone does not support eSIM, long stay: a local SIM card is the cheaper choice.
- Your phone does not support eSIM, a day or two: a roaming package from your operator is the simplest.
- Several countries in one trip: a regional eSIM — one plan, no new SIM at each border.
Questions and answers
Can I use an eSIM and roaming at the same time?
You can keep both lines on, but choose the eSIM for mobile data and turn data roaming off on your own line — otherwise the phone may use roaming data and your operator can charge you.
Will people still be able to call me with an eSIM?
Yes. Your own SIM stays in the phone, so calls and messages to your number keep arriving as your operator allows. Travel eSIMs are usually data-only, so they do not give you a second number.
Is a travel eSIM slower than a local SIM?
A travel eSIM connects to local partner networks, so speed depends on that network and the coverage where you are. Each destination's page shows the speed its networks provide.
What if my phone does not support eSIM?
Then a local SIM card or a roaming package from your operator are your options. If you plan to change your phone soon, almost every recent model supports eSIM.
Ready to compare? See the packages for your destination — prices are shown upfront, with nothing added later.
Ready for your trip?
An eSIM for 200 countries: set up in minutes, with no roaming bill.