Most France trips from India go well on the phone side. A few small mistakes are the ones that cause trouble, usually in the first hour in Paris or at a station in the south. Here they are, ordered by how much they can cost you, with what to do instead.
For a trip inside France, a France eSIM installed at home covers Paris, the Riviera, the Alps and the rail between them.
First, what an eSIM is
An eSIM is a SIM built into your phone, so there is no small plastic card to swap. People call it an eSIM card or an e sim, but nothing physical arrives. You buy an eSIM online, scan a QR code at home and the plan waits on your phone. Check your handset on the eSIM compatible device list. A physical travel SIM is available for phones without eSIM support.
Mistake 1: choosing a France-only plan for a route that leaves France
This one costs the most, because you end up buying a second plan at a border. A Paris to Brussels or Paris to Zurich train crosses a country line in about an hour and a half. A France plan covers France only. If your route includes another country, the Europe plan covering 33 countries is the better fit, and the differences are set out in regional against single-country plans.
Mistake 2: waiting to sort data until you reach Charles de Gaulle
It seems fine, since the airport has shops. The trouble is the timing. After an overnight flight from Delhi or Mumbai you land tired, and the next hour is a train or taxi booking that needs data. Install at home instead, then switch the plan on when the plane lands. If you forgot, buying an eSIM at the airport before you board works too.
Mistake 3: leaving tickets to load on the spot
Museum entry, the Eiffel Tower lift and SNCF trains all use QR codes. Signal inside the Metro stations is patchy, and inside the Louvre queue it can be slow. Screenshot every ticket on hotel wifi the night before.
Do
Save tickets and offline maps before you leave the hotel.
Do not
Count on loading a QR code underground.
Mistake 4: buying too little data for photo-heavy days
Light users do fine on a small plan. Anyone posting photos daily from Paris, Nice and the Alps uses far more. Work out your own figure with our guide on how much data you need for a week abroad, then pick one size up if you are unsure.
Mistake 5: assuming the Alps and the south coast behave like Paris
| Place | What to expect | What to do |
|---|---|---|
| Paris | Strong signal above ground, patchy in Metro tunnels | Save tickets first |
| Nice and the Riviera | Good along the coast and in towns | Offline map for hill villages |
| Chamonix and the Alps | Good in the valley, weaker on high trails | Download trail maps first |
This one is mostly harmless in cities and matters only on mountain days.
Setting up the right way
Buy the plan
Pick the days and data on the France page. The QR code arrives by email.
Install on home wifi
Scan the code from a laptop, following the installation guide. A new line appears in your mobile settings.
Switch on after landing
Pick the France line for data, then wait about a minute for signal.
The short version
Match the plan to your route, install at home, and save tickets before you go underground or up a mountain.
