Studying Abroad in 2026: What Should You Do With Your French Mobile Plan?

Introduction: the plan that runs on empty for ten months

At the end of August, the departures come thick and fast. Erasmus in Berlin or Lisbon, a university exchange in Montreal, a final-year internship in Singapore, a gap year in Latin America. The paperwork is done, the accommodation is booked, the health insurance is signed. Only one thing is still hanging, and nobody thinks about it until the night before the flight: the French mobile line.

The most common reflex is to do nothing at all. The plan keeps being debited, at €15, €20 or €25 a month, while the student buys an €8 local SIM card on arrival that covers 90% of what they actually need. Over ten months, that pointless bill routinely reaches €150 to €250 — the equivalent of two months of groceries.

The problem isn't only financial. In 2026, a French 06 or 07 number is still the key to a large chunk of your administrative life: banking validation, tax filings, Ameli, CAF, France Connect, rental platforms, online accounts. Cancelling it without thinking can cost far more than keeping it. This guide explains how to weigh up each option, depending on your destination and how long you'll be away.

Step 1: map out your actual usage before deciding

Before choosing a formula, you need to answer three very concrete questions. The answers determine everything else.

How long are you going for? A semester (4 to 6 months) and a full year (10 to 12 months) don't call for the same solutions. Under three months, keeping your plan exactly as it is often the most rational choice.

To which zone? The decisive dividing line isn't the continent, it's the regulatory regime:

• European Union, European Economic Area (Iceland, Norway, Liechtenstein): the European "roam like at home" regulation applies. Your French plan works just like it does in France, within the data allowances set by your operator.
• United Kingdom, Switzerland, Andorra, Monaco: outside the European framework. Some operators include them commercially, others don't. Check plan by plan.
• Rest of the world: roaming is billed at rates that bear no resemblance to anything else. More on this below.

Which services depend on your French number? Draw up the list — it's longer than you'd think. Bank (strong authentication mandated by the PSD2 directive), insurance, social security, tax administration websites, Google or Apple accounts created with that number, carpooling platforms, messaging apps tied to the number.

A simple rule: the more deeply your number is rooted in your administrative life, the riskier an outright cancellation becomes. The question then becomes "how do I keep it at the lowest possible price", not "should I keep it".

Step 2: the EU case, simpler than you'd think

What the European regulation actually guarantees

Since roaming surcharges were abolished in 2017 — extended by the regulation adopted in 2022 and applicable until 2032 — calls, texts and data used from an EU country are deducted from your French plan exactly as if they were consumed in France. Arcep regularly sets out the contours of this framework on its institutional website.

Two limits remain, and they are critical for a long stay.

The data cap. Operators are allowed to cap the volume usable from abroad, according to a formula linked to the pre-tax price of your plan. In practice, a 200 GB plan at €12 does not give you 200 GB in Europe: the "Europe" cap is often somewhere between 15 and 35 GB depending on the offer. Beyond that, per-gigabyte billing kicks in.

The fair use clause. The European text states that roaming is designed for travel, not for permanent residence abroad. Operators monitor one indicator: if, over a rolling four-month window, your presence abroad far outweighs your presence in France, they can notify you of an anomaly and then apply a surcharge.

That is precisely the profile of a student on a two-semester exchange. Many discover the warning message in their fifth month.

The "dual line" strategy in Europe

The formula that works best in 2026 combines two elements:

1. A French plan cut down to the bare minimum, kept purely for the number (see step 4).
2. A local SIM or eSIM from your host country, often far cheaper than in France for national calls and essential for receiving texts from local services (local bank, deliveries, university administration).

This approach assumes a phone that handles two lines simultaneously. Most models sold in Europe since 2020 accept one physical SIM plus one eSIM; some handle two active eSIMs. Check this before you leave, in your network settings. If your device doesn't allow it, a simple dual SIM adapter won't solve anything: this is a software limitation, not a mechanical one.

Think about your gear too: a universal multi-plug charger with international adapters saves you from buying three different power bricks in three weeks, and a compact USB-C power bank will rescue those moving-in days spent flat-hunting with the GPS running for six hours straight.

Step 3: outside the EU, absolute vigilance

The rates that hurt

Outside the EU and the EEA, no regulatory cap applies. The out-of-plan rate cards published by French operators hover, depending on the zone, around:

At those rates, a single background app update is enough to generate a three-figure bill. A European directive does admittedly require data to be cut off automatically once spending passes a certain threshold (€50 excl. VAT), but that mechanism doesn't always protect you in every zone and for every type of use.

The pre-departure protocol outside the EU

Before boarding, on your phone:

• Turn off data roaming in the settings for the French line.
• Turn off automatic app updates when not on Wi-Fi.
• Check that voicemail doesn't forward calls to a premium-rate number.
• Ask your operator, in writing, to place a full roaming block on the line if you don't intend to use it at all.

Once there, go for a local or regional eSIM bought online, which can be activated before you even land. The market has matured: regional offers covering North America, Southeast Asia or Latin America are now commonplace and can be topped up from an app.

One frequently overlooked point: in some countries, buying a local SIM requires registered photo ID and sometimes proof of address. Carrying photocopies of your passport and a travel document holder with RFID protection makes these formalities easier and saves you from pulling out the original in a crowded shop.