I'm Marc from PuraSIM, and this is one of the most common questions I get before a long weekend in Paris or a week on the French Riviera: how to get internet in France without any surprises or overpaying. And I'll tell you right now: I'm not going to force you to buy an eSIM here. France is in the European Union, and that changes the rules of the game. In many cases, your Spanish plan already covers you; in others, you run out of data halfway through your trip and don't realize it until it's too late. Let's look at each case to see what your real situation is.
Do you need to sign up for anything or not?
If you travel to France with a Spanish plan from an EU operator, roaming is included under the "Roam Like At Home" regulation: you make calls, send texts, and browse with your usual plan, without surcharge. You don't need to buy anything extra. That's the honest starting point.
The problem is that "included" doesn't mean "unlimited." Operators apply a fair use policy that limits the gigabytes you can use outside of Spain, and that limit depends on what you pay per month, not what you have contracted at home. If your plan is cheap, your data allowance abroad can be much smaller than you imagine.
From there, the scenario opens up. There are four possible paths, and each has its moment:
- Roaming with your Spanish plan. Free, zero hassle, top-notch coverage. Perfect if your included gigabytes last the trip.
- Hotel and local Wi-Fi. Useful complement, never the basis of your connectivity.
- Local French SIM. Makes sense for long stays or if you need a real French number for reservations and errands.
- Travel eSIM. The rescue option when your plan falls short or when you're coming from outside the EU.
The rest of the guide helps you figure out which of those four categories you fall into. The right answer for a traveler with a €40/month plan is not the same as for one with a €6 plan, nor for an Argentinian landing at Charles de Gaulle.
Your Spanish plan in France: what it really includes
Here's the detail almost no one tells you. The gigabytes you can use in the EU are not those from your plan: they come from a regulated formula. In 2026, your roaming gigabytes are calculated as (monthly price without VAT ÷ 1.10) × 2. The divisor is the wholesale cap a French operator can charge yours, which this year is €1.10 per gigabyte and will drop to €1/GB in 2027.
Translated into real numbers, with a €9.99/month plan, you get about 15 GB to use in France. Sounds good. But with a low-cost €6 plan, you're left with around 9 GB, and with a €5 plan, you're around 7 GB. If you're going to share your connection with your partner, use Google Maps all day, and upload videos, those gigabytes will disappear in four or five days.
The trick is not the roaming: it's that your operator gives you fewer gigabytes abroad than at home, and you only find out when you get the warning SMS halfway through your trip.
What happens if you go over? They don't cut off your connection: they charge you an extra per-gigabyte fee that can be around a euro plus VAT. Nothing dramatic for 1 or 2 GB, but it adds up if you're not careful. And if your plan is old or a cheap prepaid one, check the fine print: some inherited ones have worse limits than current ones. I break down the cost details by scenario in how much international roaming costs.
When an eSIM is worth it (being honest)
If you have a good Spanish plan and are going to Paris for five days, you don't need to buy anything. I'm telling you, and I sell eSIMs. Buying one would be a waste of money. However, there are five situations where it is worth it, and they are more common than they seem:
- Your plan includes little data. With a 7–10 GB allowance in the EU and a two-week trip, you'll definitely run short.
- You'll be away for a long time. The fair use policy monitors four-month windows: if you spend more time outside Spain than in and consume more outside than in, your operator may warn you and start applying surcharges. Digital nomads and Erasmus students, pay attention.
- You have an old or corporate plan with worse roaming conditions, or a prepaid plan that doesn't include roaming at all.
- You're not from the EU. If you're traveling from Latin America, the United Kingdom, the United States, or Switzerland, "Roam Like At Home" doesn't apply to you, and your operator's roaming can cost you a fortune per day. Here, an eSIM is not an alternative: it's the sensible option.
- You want to separate work and travel, or keep your national gigabytes intact because you share your connection with your laptop.
Outside of these cases, save your money. If you're debating between the two options, I have an in-depth comparison in eSIM vs roaming, with numbers instead of slogans. And if the concept sounds like Greek to you, start with what an eSIM is before buying anything.
Hotel, cafe, and train Wi-Fi: the plan B that isn't a plan
France has public Wi-Fi everywhere. Hotels, coffee shop chains, most museums, many TGV trains, and a good part of Paris transport. Enough, in theory, not to spend a single gigabyte. In practice, it works terribly as a primary strategy, and I'll explain why.
Wi-Fi is where you are not when you need it. You need it when you get off the metro at the wrong stop, looking for the platform of the TER leaving in four minutes, or showing your digital ticket at the Louvre entrance. In all those moments, you're on the street, not in the hotel. The connectivity that works is the one you carry with you.
Plus, there are three specific drawbacks:
- Captive portals. Many French Wi-Fi networks require registration with an email or an SMS to a number, and some reject foreign numbers. Without mobile data, you can't receive that SMS: it's a catch-22.
- Hotel speed. A shared hotel Wi-Fi at 9 PM, with everyone watching shows, isn't suitable for a work video call.
- Security. On open networks, avoid banking and shopping. If you're going to use them a lot, use a reliable VPN.
My practical recommendation: use Wi-Fi for heavy tasks (uploading photos, downloading offline maps, backups) and save mobile data for getting around. Never the other way around. If you're considering a portable router as a substitute, read eSIM vs pocket Wi-Fi first: the extra gadget, battery, and deposit rarely pay off in an EU country.
Local French SIM: Orange, SFR, Free, and Bouygues
France has four operators with their own network: Orange, SFR, Bouygues Telecom, and Free Mobile. Buying a local SIM is perfectly viable and, for certain profiles, the best option. These are the most common products seen in 2026:
| Option | Data | Validity | Approx. Price |
|---|---|---|---|
| Orange Holiday Europe | 20 GB (sometimes 30 GB on promo) | 14 days | €39.99 |
| Orange Holiday World | 10 GB (data only) | 14 days | €29.99 |
| Bouygues "My European SIM" | 20 GB in France and Europe | 30 days | €39.99 |
| Bouygues tourist range | 15–60 GB | 15–30 days | €19.90–€41.90 |
| Free 5G (monthly plan) | 350 GB in France / 35 GB in EU | 1 month, renewable | €19.99 |
Where to buy them? In operator stores, at kiosks in Charles de Gaulle and Orly airports, at FNAC or Darty, in large supermarkets, and in many tabacs. Beware: in France, prepaid SIMs require ID, and monthly offers like Free usually ask for a European IBAN and an address, which you might not have as a tourist.
When does it make sense? If you're staying for weeks or months, if you need a French number for reservations, deliveries, or administrative procedures, or if you're going to consume huge amounts of data. When not? For a weekend: paying €39.99 for 20 GB when your Spanish plan already gives you 15 GB for free makes no sense. The full breakdown is in eSIM vs local SIM.
Travel eSIM: how it works in practice
An eSIM is a digital card installed on your mobile by scanning a QR code. There's no plastic, no store, no airport queue. You buy it before leaving home, install it with Wi-Fi, and it activates automatically when you land and connect to the French network. The entire process takes about three or four minutes, and you don't need to be tech-savvy.
The important thing for a trip to France is to understand what it gives you and what it doesn't:
- It does give you: mobile data on a French operator's network (usually with roaming agreements with several networks, so your phone chooses the best available signal).
- It does give you: keeping your active Spanish number for SMS and calls, because the eSIM coexists with your physical SIM. You receive your bank code without a problem.
- It usually does not give you: a French phone number. Travel plans are usually data-only. For calls, you use WhatsApp, FaceTime, or Telegram, which is what everyone does.
- Requirement: compatible and unlocked mobile phone. Almost all recent models are, but check before buying.
A tip I always give: install it at home, with Wi-Fi, but don't activate it until you arrive if your plan counts days from activation. And deactivate your Spanish line's data to avoid cross-consumption. The step-by-step with the exact configuration is in the eSIM guide for France.
Comparison of the four options
Putting it all together, here's the overview for a typical week-long traveler in France, with estimated 2026 prices and no euphemisms:
| Option | Real cost | Effort | French number | Ideal for |
|---|---|---|---|---|
| Spanish plan (EU roaming) | €0 (within your allowance) | None | No | Short trips with generous plans |
| Hotel and local Wi-Fi | €0 | Low, but limited | No | Complement, never base |
| Local French SIM | €20–€40 | High (store, ID, change SIM) | Yes | Long stays, residents |
| Travel eSIM | From a few euros | Low (QR and done) | No (data only) | Short data plans and non-EU travelers |
The quick takeaway: if you live in Spain and your plan gives you 15 GB in the EU, stick with what you already pay for. If your plan gives you 7 GB and you're traveling for twelve days with family, a data eSIM is cheaper than surcharges and saves you the mental rationing of constantly checking your usage. And if you're coming from Bogotá, Mexico City, or Buenos Aires, don't even consider your operator's roaming: the daily rates are from another era.
A nuance almost no one mentions: an eSIM is also good insurance. It costs little, you have it installed as a backup, and if your operator limits your data just when you need the map, you activate it in thirty seconds.
Real coverage: Paris, French Riviera, Alps, Corsica, and towns
France has one of the best networks in Europe, but it's not uniform. 2026 data shows 5G reaching almost 75% of the population, with more than 75,000 active antennas among the four operators. In terms of quality territorial coverage, Orange leads with 92%, followed by Bouygues (89%), SFR (84%), and Free (83%). The so-called "white zones" without decent coverage are now only about 1% of the territory, and are mostly in the mountains.
| Area | What to expect |
|---|---|
| Paris and Île-de-France | Solid 5G above ground; in the metro there's coverage, but with drops in tunnels and deep platforms. |
| French Riviera (Nice, Cannes, Monaco) | Excellent. Be careful in summer: saturation on beaches and at events lowers real speed. |
| Alps (Chamonix, Tignes, Annecy) | Good in towns and resorts; inconsistent on high slopes, closed valleys, and hiking trails. |
| Corsica | Decent in Ajaccio, Bastia, and on the coast; weak in the mountainous interior and the GR20. |
| Rural (Dordogne, inland Brittany, Massif Central) | 4G almost always sufficient; 5G uneven. Here Orange's network makes a difference. |
Two field tips. First: if you're going to the Alps or Corsica, download offline maps before you go (they take up little space and save you a lot); no technology will save you from a valley without an antenna. Second, something surprising: you don't choose the network you connect to. Your mobile connects to the network your provider has an agreement with; it almost always doesn't matter, but in a village in the Massif Central, it's two bars of difference.
How much data you really need
Almost everyone overestimates what they'll use. A tourist in France uses their phone for maps, messaging, some social media, finding restaurants, and showing tickets. That consumes much less than you think. What skyrockets consumption is something else: video streaming, uploading high-quality stories, and using your phone as a router for a laptop.
| Travel profile | Daily consumption | For 7 days |
|---|---|---|
| Light (maps, WhatsApp, some web) | 200–400 MB | 2–3 GB |
| Normal (social media, photos, music) | 500 MB–1 GB | 5–7 GB |
| Intensive (video, stories, connection sharing) | 1.5–3 GB | 10–20 GB |
| Remote work (video calls, cloud) | 2–4 GB | 15–30 GB |
Cross-reference this table with the formula in section 2 and you have your answer. If your plan gives you 15 GB in the EU and you're a normal user, you have plenty and don't need to buy anything. If it gives you 7 GB and you're an intensive user, or you're traveling for two weeks, the numbers don't add up, and it's better to reinforce.
Three tricks I always use to make gigabytes last twice as long: download Google Maps for the area offline before you leave (it's small and saves a lot), put Instagram and TikTok in data saver mode, and disable automatic video playback. And something boring but key: check your data counter on the third day. If you're below 40%, you'll have no problem.
Frequently asked questions
Does my Spanish mobile work in France without doing anything?
Yes. France is in the EU, and your Spanish plan includes roaming under the "Roam Like At Home" regulation: calls, SMS, and data with your usual conditions. You just need to have data roaming activated in your phone settings.
How many gigabytes can I use in France with my plan?
It depends on what you pay. In 2026, the formula is (monthly price without VAT ÷ 1.10) × 2. A €9.99 plan gives about 15 GB; a €6 plan gives about 9 GB. Check with your operator's customer area before traveling.
What happens if I exceed my included gigabytes?
They don't cut you off: they apply an extra charge per additional gigabyte, which in 2026 is around a little over one euro plus VAT. For 1 or 2 extra GB, it's manageable; if you expect to go over significantly, a separate data plan is worthwhile.
Is a French SIM worth it for a week?
Usually not. Tourist SIMs cost around €20–40 for 20 GB, and your Spanish plan already includes data. It only pays off if you need a French number or if you're staying for several weeks.
What if I'm traveling from outside the European Union?
Everything changes. Without "Roam Like At Home," your operator's roaming can cost you several euros a day or be charged per megabyte. In that case, a data eSIM or a local French SIM are clearly the best economic option.
Is there good coverage in the Alps and Corsica?
In villages, ski resorts, and coastal cities, yes. In high slopes, enclosed valleys, and the interior of Corsica, the signal is irregular. Download offline maps before heading up and don't rely on connectivity while en route.
Can I have my Spanish number and French data simultaneously?
Yes, this is common with an eSIM: the digital line handles data, and your physical SIM keeps your number active for calls and bank SMS. Just deactivate mobile data for your Spanish line to avoid overconsumption.
Conclusion
In summary, without beating around the bush: if you live in Spain, have a decent plan, and are going to France for a week, buy nothing. European roaming covers you, period. If your plan is cheap and gives you 7 or 8 GB, if you're going to be away for weeks, if your plan is old, or if you're traveling from outside the EU, then yes: a data eSIM is cheaper than surcharges and takes away the stress of counting megabytes.
That's the mindset with which we built PuraSIM: not to sell just to sell, but to fill a real gap. If you've done your calculations and see that your plan falls short, the eSIM for France installs in minutes, works as soon as you land, and lets you arrive in Paris with internet already working, without queues or surprises on your bill. And if you don't need it, even better: you save money, and my conscience is clear. Have a good trip.
