You land, switch on your phone, and the usual question pops up: how to get mobile data abroad without the bill ruining your trip. Between your carrier's roaming, buying a local SIM, renting a pocket WiFi, relying on hotel WiFi, or installing a travel eSIM, there are plenty of ways to stay connected and almost all of them have a catch. In this guide we go through them all, with real 2026 prices, their pros and cons, and we tell you when each one makes sense so you can choose wisely.
The problem with staying connected away from home
The problem isn't a lack of options, it's that each one solves a different scenario and mixing them gets expensive. Within the European Union things are easy: your plan works just like it does at home thanks to the "roam like at home" regulation, so for a trip to Lisbon or Berlin you don't need to do anything. The real headache starts when you cross a border outside the EU: the United States, Japan, Thailand, Morocco, Mexico, or the UK after Brexit. That's when agreements between carriers vanish and prices skyrocket.
Add to that the pressure of wanting it all at once: maps so you don't get lost, a translator to understand the menu, messaging to let people know you've arrived, photos to the cloud, and if you work, email always at hand. All of that eats data. The key is deciding before you leave how you'll cover that need, because improvising at your destination almost always means overpaying or ending up stranded looking for a phone store with just enough language skills. Let's go option by option so you arrive with the decision already made.
Option 1: your carrier's roaming
It's the default option and the most convenient: you don't have to do anything, your usual number stays active, and when you land, your phone connects to a local network automatically. The problem is the price outside the EU. Many carriers charge roaming usage between 6 and 18 euros per MB if you don't activate a bundle, which in practice means a single gigabyte can cost you hundreds of euros. To avoid that, almost all of them offer daily travel bundles that run around 5 to 15 euros per day with limited data, or plans up to 25-30 euros per day for unlimited usage.
Let's do the math: two weeks in Japan with a 10-euro daily bundle is 140 euros just for data, and often at reduced speed past a certain usage. Roaming wins on one thing only, total convenience, but you pay a steep price for it.
Rule of thumb: within the EU, your carrier's roaming is perfect and free; outside the EU, it's almost always the most expensive option of all. If you're going beyond Europe, look for an alternative before you leave.
When it makes sense: short trips within the EU, or the occasional emergency outside it. If you want to understand exactly how it works and when it kicks in, we explain it in what roaming is.
Option 2: buying a local SIM
Buying a prepaid card from the country you're visiting is the cheapest option per gigabyte if you're staying in one destination for a long time. A tourist SIM usually costs between 7 and 20 euros for a week or two with generous data, and the speed is the native speed of the local network, typically excellent. For a long stay of one to three months in a single country, no other option beats it on price per data.
The downsides are logistics and time. You have to find a reliable point of sale as soon as you arrive, often at the airport where it's more expensive, show your passport to identify yourself (many countries require registration), manually configure the APN, and, most importantly, physically change your number: you temporarily lose your local line for calls and SMS, just when your bank and apps are sending you verification codes. And if you're on a multi-country trip, a local SIM from one country doesn't travel well when you cross the next border.
When it works best: long stays in a single country, multi-week backpackers, or anyone who uses a huge amount of data and doesn't mind the hassle.
Option 3: renting a pocket WiFi
A pocket WiFi (or MiFi) is a small portable router with its own data SIM that creates a network for multiple devices at once. Its big advantage is that a single connection is shared by phones, tablets, and laptops across the whole group, so if you're traveling as four or five people, the cost per person drops significantly. Rental typically runs from 4 to 8 euros per day with unlimited data, and there are deals starting at 3.95 euros daily.
The price doesn't tell the whole story. You need to pick up the device before the trip and return it at the end (either prepaid or at an airport counter), pay a deposit that can be up to 50% of the device's value, and charge yet another battery that dies after half a day of heavy use. If you lose or damage it without the optional insurance, the penalty is around 80 to 150 euros. Plus, it's one more gadget to carry around, and if the group splits up, whoever doesn't have the router has no internet.
When it works best: families or groups of four or more people who stick together and use a lot of data. For a solo traveler, it almost never pays off.
Option 4: relying on public WiFi
The "free" option: hotel WiFi, airport WiFi, coffee shop WiFi, or mall WiFi. For light, occasional tasks it can get you out of a bind, but as a primary solution it has two major flaws. The first is coverage: you only have internet when you're physically inside that network, so out on the street, on public transport, looking for an address, or hailing a taxi, you're cut off exactly when you need it most.
The second is security, and it's serious. Public networks are usually unencrypted, making them easy targets for "man-in-the-middle" attacks, where an attacker positions themselves between you and the access point and captures what you send: emails, passwords, or banking data. There are also plenty of fake networks with names that imitate the hotel or airport WiFi. The numbers are worrying: it's estimated that 25% of travelers experience some kind of incident using public WiFi abroad, and 78% don't use a VPN when connecting. Airports and hotels are the preferred targets for hackers.
Public WiFi is a useful backup, never your only connection while traveling. If you use it, always do so with an active VPN and avoid online banking.
When it works best: as occasional support for large downloads at the hotel, always with a VPN. Never as your main plan.
Option 5: the travel eSIM
A travel eSIM is a digital card that installs on your phone with nothing physical: you buy a plan online, scan a QR code, and when you arrive you have data instantly. It brings together almost all the advantages of the previous options without their downsides. You keep your local number, so you still receive calls, SMS and verification codes while using data from the international plan; there is no device to pick up, return or charge; and the prices are a fraction of what classic roaming costs, with typical savings of 30% to 70%.
It also works across multiple countries: one regional plan covers you when crossing borders, something impossible with a local SIM. That is why, for the vast majority of travelers, the eSIM is the one that best balances cost, convenience and speed. At PuraSIM we cover 200+ destinations with plans from $1.49, QR installation in 1 minute, hotspot feature to share data and support in English 24/7, all without extra charges or surprises on your bill.
When it works best: almost always. Solo travelers, couples, trips of a few days or several weeks, one country or several. If you are unsure, this is your safe bet. We go deeper into how it works in what is an eSIM and why many already travel this way in internet without roaming: how to get it.
Comparison table and verdict
We summarize the five options in what really matters when you need data: what it costs, how convenient it is and the speed it offers. It is a rough guide with real 2026 figures; exact prices depend on your destination and your carrier.
| Option | Cost (outside the EU) | Convenience | Speed |
|---|---|---|---|
| Carrier roaming | Very high ($5-30/day or more) | Maximum: zero setup | Good, sometimes throttled |
| Local SIM | Very low per GB | Low: buy, register, change number | Excellent (native network) |
| Pocket WiFi | Medium ($4-8/day + deposit) | Medium: pick up, charge, return | Good |
| Public WiFi | Free | Low: only within range | Variable and insecure |
| Travel eSIM | Low (from $1.49) | High: QR in 1 minute | Excellent |
The verdict, except for very specific cases, is clear: the eSIM wins on the balance between the three variables. Roaming only makes sense inside the EU; a local SIM for very long stays in one country; a pocket WiFi for large groups; and public WiFi as a backup. If you want to compare the two best alternatives in depth, we break it down in eSIM vs portable WiFi and round up the best international plans in international eSIM. Ready to connect without the hassle? Choose your eSIM based on your next destination.
Frequently asked questions
Do I need mobile data if I am traveling inside the European Union?
You do not need to buy anything extra: thanks to the "roam like at home" regulation, your local plan works in any EU country with the same data and no extra charge. The problem only appears when traveling outside the EU, where an eSIM or another alternative is a good idea.
How much does it cost to use mobile data abroad outside Europe?
It depends on the option. Roaming without a plan can cost 6–18 € per MB; with a daily plan, between 5 and 30 € per day. A local SIM runs around 7–20 € for a week, a pocket WiFi 4–8 € per day plus a deposit, and a travel eSIM starts from $1.49. The eSIM is usually the most cost-effective because of the convenience it offers.
Will I lose my Spanish number if I use a travel eSIM?
No. The eSIM works alongside your main SIM: you keep your usual number active for calls, SMS, and bank verification codes, while you browse with the international plan data. This is one of its big advantages over buying a local SIM.
Is it safe to use hotel or airport WiFi?
Only with caution. Public networks are usually unencrypted and are targets for attacks and fake networks. If you use them, always have a VPN active and avoid online banking. As a main travel connection they are not reliable: having your own data with an eSIM is much safer and more convenient.
Does my phone work with eSIM?
Most mid-to-high-end phones from recent years are eSIM-compatible: iPhone XS or later, Samsung Galaxy S20 onwards, recent Google Pixels, and many others. The phone also needs to be carrier-unlocked. You can check in your phone settings before buying your plan.
How long does it take to activate a PuraSIM eSIM?
Very little. After purchase you receive a QR code; you scan it, install the profile, and it's ready in about 1 minute. The ideal is to install it before leaving home and let it activate when you land, so you have data from the moment you arrive.
Conclusion
Getting mobile data abroad no longer has to be a gamble. Within the EU, your carrier's roaming covers you at no extra cost; outside it, the hierarchy is clear: roaming is the most expensive, a local SIM only pays off for long stays in one country, a pocket WiFi makes sense for large groups, and public WiFi is a risky backup, never a plan. For everything else — which is most trips — a travel eSIM offers the best balance of price, convenience, and speed, without changing your number or carrying extra devices.
With PuraSIM you get 200+ destinations, plans from $1.49, QR activation in 1 minute, hotspot, and support in English 24/7. Choose your eSIM and travel connected from the moment you land. And if you travel within the European Union, always check the EU roaming rules to know exactly what your plan covers.
