eSIM for France

Does your home plan roam in France at home prices?

Inside the European Union, “roam like at home” lets someone with a mobile subscription from an EU or EEA country use it in France at the prices they pay at home. The European Commission says it applies in every EU country plus Iceland, Liechtenstein and Norway, and it has also applied in Ukraine and Moldova since 1 January 2026.

The rule follows where your subscription comes from, not where you are standing. If your SIM was issued outside the EU, the EEA, Ukraine and Moldova, the rule gives you nothing in France: your home plan's own roaming terms decide what data costs.

It also stops at the Channel. Since the United Kingdom left the EU, roam like at home no longer applies to travel there, so a day in London by Eurostar can be billed differently from the rest of your trip, even on an EU SIM. Switzerland is not among the countries the rule names either, which matters for a day trip to Geneva. Even inside the EU, a ship's satellite-based service on board falls outside the rule; see using your phone at sea on Greek ferry crossings.

Wi-Fi at Charles de Gaulle, on the TGV and in Paris

At Paris-Charles de Gaulle, Paris Aéroport offers free Wi-Fi in all terminals, boarding areas and baggage claim: choose the WIFI-AIRPORT network and its welcome page opens on your phone. It covers the first messages after landing; once you leave the terminal, you are back on mobile data.

On TGV INOUI trains equipped with it, free Wi-Fi is available on board through the _SNCF_WIFI_INOUI network or the wifi.sncf page. SNCF explains that the equipment on board relays the mobile network along the line, so availability depends on mobile coverage, and it asks passengers to download films and large files before boarding.

In Paris itself, the City runs a free network, Paris Wi-Fi, in many parks and gardens, district town halls, libraries and city museums. You fill in a short form to connect, and each session lasts two hours before you reconnect.

A plan for France alone or for a wider European route

Local plans cover France alone, which fits a stay in Paris or a rail loop through the regions. Daily plans give you a set allowance for each day, useful when sightseeing mostly means maps, tickets and messages. If the trip carries on across borders, regional plans that include France also cover the United Kingdom, Spain, Italy, Belgium and Germany, among other destinations.

If your route leaves the European Union, open the coverage list on a plan's card before you rely on it. Your phone also needs to support eSIM and be unlocked; the compatibility guide shows how to check, and the activation guide explains when a plan's term begins.