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 nasty surprises or overpaying. And I'll tell you right now: I'm not going to force an eSIM sale on you 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'll run out of data halfway through your trip and won't realize it until it happens. Let's look at each case to determine your actual situation.
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 SMS, 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 Spain, and that limit depends on what you pay monthly, 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 broadens. 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 dealings.
- Travel eSIM. The rescue option when your plan falls short or when you're coming from outside the EU.
The rest of the guide is to help 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 about 9 GB, and with a €5 plan, you get 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 vanish in four or five days.
The trap isn't roaming: it's that your operator gives you fewer gigabytes abroad than at home, and you only discover it 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 or more 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, check the fine print: some inherited plans have worse limits than current ones. I break down the cost details per scenario in how much international roaming costs.
When an eSIM is worth it (being honest)
If you have a good Spanish plan and you're 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 worthwhile, 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 Spain and consume more data outside than inside, 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 are not from the EU. If you are traveling from Latin America, the UK, the United States, or Switzerland, "Roam Like At Home" does not apply to you, and your operator's roaming could cost you an exorbitant amount per day. Here, an eSIM is not an alternative: it's the sensible option.
- You want to separate work and travel, or keep your domestic gigabytes intact because you share your connection with a laptop.
Outside of these cases, save your money. If you're torn between the two options, I have an in-depth comparison in eSIM vs roaming, with numbers instead of slogans. And if the concept sounds foreign 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, to not spend a single gigabyte. In practice, it works poorly 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 for the TER that leaves in four minutes, or showing your digital ticket at the entrance to the Louvre. At 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 SMS to a number, and some reject foreign numbers. Without mobile data, you cannot receive that SMS: a chicken-and-egg problem.
- Hotel speed. A hotel's shared Wi-Fi at 9 PM, with everyone watching shows, is not suitable for a work video call.
- Security. On open networks, avoid banking and purchases. 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, first read eSIM vs pocket Wi-Fi: 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 networks: 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 in 2026:
| Option | Data | Validity | Approximate 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 the EU | 1 month, renewable | €19.99 |
Where to buy them? At operator stores, kiosks at Charles de Gaulle and Orly airports, FNAC or Darty, large supermarkets, and many tabacs. Be careful: in France, prepaid SIMs require identification, 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 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 a technician.
The important thing for a trip to France is to understand what it does and doesn't give you:
- 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: to keep your Spanish number active for SMS and calls, because the eSIM coexists with your physical SIM. You receive your bank code without a problem.
- It usually doesn't 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 the days from activation. And deactivate data for your Spanish line so there's no cross-consumption. The step-by-step with exact configuration is in the eSIM guide for France.
Comparison of the four options
Putting it all together, here's the landscape for a typical one-week traveler in France, with estimated 2026 prices and without 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 primary |
| Local French SIM | €20–€40 | High (store, ID, changing 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 your family, a data eSIM is cheaper than surcharges and avoids 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.
One 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 can activate it in thirty seconds.
Actual coverage: Paris, French Riviera, Alps, Corsica, and villages
France has one of Europe's best networks, but it's not uniform. 2026 data shows 5G reaching nearly 75% of the population, with over 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 mainly in mountainous areas.
| Area | What to expect |
|---|---|
| Paris and Île-de-France | Solid 5G above ground; subway has coverage, but with drops in tunnels and deep platforms. |
| French Riviera (Nice, Cannes, Monaco) | Excellent. Beware in summer: saturation at beaches and events lowers actual speed. |
| Alps (Chamonix, Tignes, Annecy) | Good in towns and resorts; spotty on high slopes, closed valleys, and hiking trails. |
| Corsica | Decent in Ajaccio, Bastia, and the coast; weak in the mountainous interior and on the GR20. |
| Rural (Dordogne, inner Brittany, Massif Central) | 4G almost always sufficient; 5G uneven. Here, the Orange network makes a difference. |
Two practical tips. First: if you're going to the Alps or Corsica, download offline maps before you go (they don't take up much space and save you a lot); no technology will save you from a valley without an antenna. Second, something surprising: you don't choose which network you get. Your phone 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 can mean two bars of difference.
How much data you really need
Almost everyone overestimates how much they'll spend. A tourist in France uses their mobile for maps, messaging, some social media, finding restaurants, and showing tickets. That consumes much less than you think. What drives consumption is something else: video streaming, uploading high-quality stories, and using your mobile 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, tethering) | 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'll 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, it won't add up, and it's better to top up.
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 auto-play videos. And something boring but key: check your data counter on the third day. If you're below 40%, you won't have a problem.
Frequently asked questions
Does my Spanish phone 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 under your usual conditions. You just need to have data roaming activated in your phone's 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, about 9 GB. Check your operator's customer area before traveling.
What happens if I exceed my included gigabytes?
You won't be cut off: you'll be charged an additional fee per extra 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 card worth it for a week?
Normally, no. 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 weeks.
What if I'm traveling from outside the European Union?
Everything changes. Without "Roam Like At Home," your operator's roaming could cost you several euros a day or be charged per megabyte. In that case, a data eSIM or a local French SIM is clearly the best economical option.
Is there good coverage in the Alps and Corsica?
In villages, ski resorts, and coastal cities, yes. On high slopes, closed valleys, and inland Corsica, the signal is patchy. Download offline maps before heading up and don't rely on a connection en route.
Can I have my Spanish number and French data simultaneously?
Yes, this is typical 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 on your Spanish line to avoid excessive consumption.
Conclusion
In short, and without exaggeration: if you live in Spain, have a decent plan, and are going to France for a week, don't buy anything. European roaming covers you, plain and simple. 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 will be cheaper than surcharges and will save you the stress of counting megabytes.
That's the mindset with which we built PuraSIM: not to sell for the sake of selling, but to fill a real need. 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 allows you to arrive in Paris with internet already working, without queues or bill surprises. And if you don't need it, even better: you save money, and my conscience is clear. Have a good trip.
