Accidental roaming when you live near a non-EU border

A trip happens once, a house by the border every day

A traveller crosses a border once and notices it. Someone with a flat near Geneva, a summer house in the Pyrenees next to Andorra or a job in La Línea gets the same foreign mast on the terrace every evening. BEREC, the body of European telecom regulators, defines inadvertent roaming as a phone registering on a foreign network without the customer meaning to, and gives exactly that example: a customer who is not travelling but is in a border area.

Inside the EU this rarely costs anything, because a French or Portuguese network is priced like home. The trouble is the neighbours outside the system. Germany's federation of consumer organisations told BEREC that complaints about unintended roaming continue, particularly in border regions, naming Switzerland. The Strait of Gibraltar, Ceuta and Melilla have their own guide, phone on a Moroccan network in Spain; this one is about the other borders and what to do when it keeps happening.

The same mast does not cost the same on every plan

Outside the EU rules, each operator decides how to price each neighbour, and they do not agree. Spanish operators group these countries into their own roaming zones, and each one prices them differently, so check your operator's roaming page for Gibraltar, Andorra, Switzerland and Morocco before you go. Another operator can put the same places in a different zone.

So the first job for anyone living near one of these borders is to look up the neighbour by name on their own operator's roaming page, not to assume. The background for each place is in our guides to roaming in Switzerland, mobile data in Gibraltar and Andorra and the microstates. If the answer is that the neighbour is charged, the setup below is worth doing once and leaving in place.

What operators are expected to do

BEREC's guidelines on the roaming regulation say providers should take all reasonable steps to help customers avoid surcharges from inadvertent roaming on networks outside the EU area. The measures it lists include coordinating signal power with operators across the border, financial limits and ways to opt out of roaming on a non-EU network where technically feasible. For customers who live close to a border, BEREC adds that operators can consider special tariffs or barring, and can alert them by text or ask for consent before allowing roaming. Under Article 14(6) of the regulation, the operator's website must also explain how to avoid inadvertent roaming in border regions.

Some Spanish operators do part of this already. Movistar says that, to avoid involuntary roaming costs, data in border countries not included in your tariff may need to be requested expressly, that a message tells you so on arrival, and it recommends switching that use off again once you are back in Spain. O2 advises keeping data roaming off when you go to a border area, giving the south of France next to Monaco and Cádiz next to Morocco as examples.

Setting up a phone that lives near the border

• Keep data roaming off on your usual line for as long as you are there. Calls and texts still reach you; our guide to turning off roaming on your home line has the switch.
• Ask your operator whether it can block data on non-EU networks for your line, or whether it has a tariff for border areas. BEREC names both as options.
• Use manual network selection only while you are at the border address, and return to automatic when you leave. The menus are in manual vs automatic network selection.
• Treat the roaming text as an alarm. If it lists prices while you are at home, the phone has already jumped; the welcome SMS explained says what it must contain.

Manual selection has a cost operators point out themselves: where your chosen network is weak, the phone can be left without coverage instead of moving to the stronger foreign one. For someone who commutes across every day, data roaming off on the usual line plus Wi-Fi at home is steadier than switching networks by hand twice a day.

Crossing on purpose

Living by a border usually means crossing it: shopping in Andorra, a walk up the Rock, a day in Basel. That is when data on your usual line costs most, so use a separate data line for those days and keep the home line's data roaming off. On a dual SIM phone, also turn off the setting that lets data jump to the other line when the travel line weakens, explained in allow cellular data switching.

Coverage depends on the plan. Snoozim's Europe pack covers 33 countries, Switzerland and Gibraltar among them, but not Andorra, which has its own pack. A single-country pack works only in that country, so near the border it stops rather than roams, as explained in crossing a border with a country eSIM.

If the charge appears anyway: what to claim

Build the complaint on the points that apply to a resident. First, where you were: the itemised bill shows the date, time and network, and you can show it was your home or holiday address, not a trip. Second, the information you were owed. BEREC states that the free pricing message is due each time the line starts roaming in a country outside the EU area, and Movistar, for one, says it texts you the prices of the operator you have connected to. If none arrived, say so. Third, the protection that should have stopped the bill: the data cut-off works outside the EU only where the visited network allows real-time monitoring, and if it does not, the operator must tell you by free text, as explained in the roaming data cut-off outside the EU.

Then ask two questions in writing: where on its website the operator explains how to avoid inadvertent roaming in border regions, and whether it offers residents a block or a border tariff. The steps of the complaint itself, from the operator to Spain's telecom user office, are in what to do about a huge roaming bill.