Using your phone in Monaco without a nasty bill

If you only take one thing from my Monaco guide, make it this. Monaco uses the euro, has no visible border with France and feels like a continuation of the Riviera, but to your phone it’s a separate country outside the European Union. Whatever your network lets you do in Paris or Rome doesn’t automatically carry over here.

Does Monaco count as Europe for your phone?

Not under the EU’s rules. Roam like at home, the regulation that lets EU customers use their home allowance abroad at no extra cost, covers the EU member states plus Iceland, Liechtenstein, Norway, Moldova and Ukraine, according to the EU’s official website. Monaco isn’t on that list, and the EU warns that roaming outside the zone can be very expensive.

For a British traveller there’s a second layer. Since the UK left the EU, British networks aren’t bound by those rules at all, and each one decides for itself what it charges in Europe and which countries its Europe allowance includes. I haven’t read any UK network’s terms for Monaco, so I’m not going to quote you a price. What I would do is open your network’s roaming page or app and search for Monaco by name. If France is listed and Monaco isn’t, assume Monaco is charged differently.

What an unchecked day can cost

To give you a sense of scale, Vodafone Spain’s page on Monaco quotes, as examples of what other operators charge there, €1.21 per text, €1.50 per minute and €12.10 per MB. That isn’t any British network’s tariff and I wouldn’t read it as one, but it shows why Monaco is worth ten minutes of checking before you pack. Vodafone Spain also puts it bluntly, saying the Rock is part of neither the EU nor the European Economic Area and is therefore outside roam like at home.

Where it catches you out

The risky moment is arrival. Come by train from Nice and you pull into an underground station inside the Principality. Take the 80 bus from the airport and you step off at Place d’Armes. Either way you’re already in Monaco, which is why I’d switch on an add-on or an eSIM before boarding rather than after. I compare the train, bus and taxi for that last stretch in my Nice to Monaco guide.

It works the other way too. A few places with Monte-Carlo in their name are actually in France, such as the Monte-Carlo Country Club, home of the Monte-Carlo Masters, and the Monte-Carlo Beach, both in Roquebrune-Cap-Martin. Beausoleil and Cap-d’Ail are France as well. Even so, being on French soil a few metres from the border doesn’t guarantee which mast your phone connects to, so if Monaco costs you extra, the safe move is to keep the eSIM or add-on active all day.

Is an eSIM worth it for Monaco?

If your plan already includes Monaco, no. If it doesn’t, I think it’s the tidiest solution. Several companies sell data eSIMs for Monaco, with packs from 1 to 10 GB valid for 7 or 30 days. My one condition is that Monaco appears by name in the coverage, because an eSIM sold for France doesn’t have to include it, and that’s the trap I’d expect most British visitors to fall into, given how many people shop for a France eSIM before a Riviera trip.

A local SIM isn’t easy either. Monaco has a single mobile network, Monaco Telecom (its numbers follow Monaco’s dialling code, +377), and I couldn’t find any prepaid card for visitors on its website. It has shops in Fontvieille, at 9 rue du Gabian, and in Monte-Carlo, at 27 boulevard des Moulins, if you’d like to ask in person.

Managing without data

For a day trip, switching data off and relying on hotel or restaurant Wi-Fi is perfectly workable if you do your homework. I’d download the map beforehand, along with the government’s leaflet of public lifts that I cover in getting around Monaco, and I’d turn off automatic photo backup, which is what usually burns through data without you noticing. I haven’t found an official public Wi-Fi network I could recommend with any confidence.

What always works is 112 from a mobile, the European emergency number, alongside 17 for the police and 18 for the fire brigade. The other numbers and the local rules on dress are in staying safe in Monaco, and cards and currency are in money in Monaco.

My three-line summary

Check your network’s roaming page for Monaco by name. If it’s there, you’re sorted. If it isn’t, or if you can’t tell, buy an eSIM that lists Monaco and switch it on before you cross from France. It’s a ten-minute job that can save you the most expensive surprise of the trip, which is why I flag it near the top of my Monaco guide.