Best eSIM for Paris (2026): Bouygues Coverage, Real Prices and the Metro
Which network a Paris eSIM actually uses, what the regulator measured in the city and on the TGV, how much data a museum week really needs, and the dated price of every plan.
Quick answer: A Paris eSIM roams on Bouygues Telecom across 4G and 5G, inside a Western Europe plan that covers 33 countries. France's regulator measured Bouygues joint-best in dense urban areas in its 2025 campaign, and the whole metro is covered in 4G.
Key takeaways
- The network is Bouygues Telecom, 4G and 5G. France has no country-only plan here: Paris is sold inside the Western Europe plan, which covers 33 countries, so a day trip to Brussels or a week that continues to Rome needs no second eSIM.
- The regulator's own numbers favour this network in the city. In Arcep's 2025 campaign Bouygues loaded 94% of web pages in under five seconds in dense areas, the joint-best result, and held 97% of calls in the metro.
- And they go against it in the countryside. The same campaign put Bouygues last in rural France at 71%, and last on TGV voice at 58%. A day trip to Reims or the Loire by train is where you will notice.
- Prices, 23 September 2026: 3 GB for 7 days US$10.09 (US$1.44 a day, US$3.36 per GB), 5 GB for 7 days US$18.63 (US$3.73 per GB), 10 GB for 15 days US$28.19 (US$2.82 per GB), unlimited for 7 days US$27.42 at up to 10 Mbps.
You land at Charles de Gaulle at nine in the evening, the RER platform is packed, and the ticket app wants data before it will sell you anything. That is the moment a Paris trip goes wrong, and it has nothing to do with sightseeing.
Which network does a Paris eSIM roam on?
It roams on Bouygues Telecom, on 4G and 5G. There is no France-only plan in the catalogue: France sits inside the Western Europe plan, 33 countries, so the same eSIM keeps working in Belgium, Spain, Italy, Germany and the rest of the list without buying anything else.
That matters more than it sounds, because Bouygues is a genuinely good network for this particular trip. In Arcep's 2025 quality campaign, published on 20 November 2025 and based on more than a million measurements taken across every metropolitan department, Bouygues loaded 94% of web pages in under five seconds in dense areas, the joint-best score, and 97% of video streams started and played cleanly. In the metro, 97% of calls were held.
How much data does a Paris week actually use?
Counting both the upload and the download on calls, and converting published bitrates at one Mbps for an hour being about 0.45 GB:
| A normal Paris day | Data |
|---|---|
| Maps and walking directions, on and off all day | 150 to 250 MB |
| Metro app, tickets, timetables | 30 to 60 MB |
| Messaging and photos to family | 200 to 400 MB |
| Restaurant and museum lookups, a few reviews | 100 to 200 MB |
| One 30-minute video call home at 720p | About 0.55 GB |
| Day total | 0.5 to 0.9 GB without the call, 1.0 to 1.5 GB with it |
So five days of sightseeing without daily video calls is roughly 2.5 to 4.5 GB, and with a call most evenings it is 5 to 7.5 GB. Photo backup to the cloud is the one thing that breaks the budget: leave it on hotel Wi-Fi.
What do the plans cost, per day and per gigabyte?
Prices read from the Fizen catalogue on 23 September 2026. Every fixed plan drops to 384 kbps when the high-speed data runs out, and none of them can be topped up.
| Plan | Days | Price | Per day | Per GB | Fits |
|---|---|---|---|---|---|
| 3 GB | 7 | US$10.09 | US$1.44 | US$3.36 | A long weekend, maps and messaging only |
| 5 GB | 7 | US$18.63 | US$2.66 | US$3.73 | Four to six days with a call most evenings |
| 10 GB | 15 | US$28.19 | US$1.88 | US$2.82 | Two weeks, or Paris plus another country |
| 20 GB | 30 | US$48.31 | US$1.61 | US$2.42 | A month, or working from the laptop |
| Unlimited | 7 | US$27.42 | US$3.92 | n/a | Streaming and hotspot, at up to 10 Mbps |
Is a French prepaid SIM cheaper than an eSIM?
On gigabytes per euro, yes, and by a lot. Orange's Mobicarte lists 150 GB in France plus 20 GB in Europe for EUR 9.99, with the credit valid one month, and 200 GB for EUR 16.99. Orange's own tourist product, Orange Travel, lists 20 GB for 14 days at EUR 24.99 and 50 GB for 30 days at EUR 44.99, both with unlimited calls and SMS.
So the honest split: if you are in Paris for three weeks, want a French number and do not mind the shop, buy the local SIM. If you land at night, have a dinner to get to, or your trip continues into another country, the eSIM is already working when the plane doors open and you never show a passport for it.
Where does the signal actually drop around Paris?
- Metro and RER tunnels: covered. All four French networks finished 4G coverage of the metro and RER, and Bouygues says its own coverage spans the network with 321 telecom sites and 300 km of cable. Arcep measured 97% of calls held in the metro in 2025. Do not expect 5G down there.
- TGV day trips: the weak spot. Bouygues came last in Arcep's 2025 train measurements at 58% of calls held. Download your tickets and maps before boarding.
- Rural France: also weak. 71% of pages under five seconds in rural areas against Orange's 79%. A Champagne cellar tour or a chateau in the Loire will have gaps.
- Inside old buildings: thick stone in the Marais and Montmartre eats signal the same way it does everywhere. Step near a window.
Terms and conditions
- Information only. This article is information about mobile data options for travellers in France. It is not an offer or sale of any product or service, and it is not financial, legal or tax advice.
- For readers in the United States. This article provides information only. It is not an offer, solicitation or sale of any product or service, and it is not financial, investment, legal or tax advice. Fizen is not offered to US Persons.
- Independent. Fizen is not affiliated with, endorsed by or a partner of Bouygues Telecom, Orange, Arcep, RATP, Ile-de-France Mobilites or Paris Aeroport.
- Data only. Travel eSIMs carry data. They give you no French number, so keep your home SIM active for calls and bank SMS codes.
- Prices and rules change. Fizen prices were read from the catalogue on 23 September 2026 and French carrier prices from the operators' own pages on the same day. Coverage figures are Arcep's 2025 measurement campaign, published 20 November 2025. Check current prices and rules before you buy.
- Full terms. Master Terms of Use, Privacy Policy and Disclaimer on the Fizen site.
Sources
- Arcep: mobile service quality in metropolitan France, 2025 campaign (20 November 2025)
- Arcep: 2024 quality campaign, full report (PDF, 26 June 2025)
- ANFR: mobile site observatory, September 2026
- Bouygues Telecom: metro and RER coverage in Ile-de-France (1 May 2025)
- Orange: prepaid Mobicarte offers
- Orange Travel: Europe plans and prices
- Orange support: where to buy an Orange Holiday SIM in France
- Legifrance: article L34-1, Code des postes et des communications electroniques
Updated 23 September 2026.
