You almost certainly cannot buy a Monegasque SIM card, and that is not a warning about queues or paperwork. It is a straightforward fact about who Monaco Telecom sells to. The principality has one licensed operator, it withdrew from prepaid, and the monthly plans that replaced prepaid are sold against a proof of Monegasque address. A visitor walking into the shop on the boulevard des Moulins is not the customer that product was designed for. So the real question on this page is not which local card to choose, because there is effectively no local card to choose. It is which of the three things you can bring with you will still be working when you are standing on place du Casino: a French SIM bought in Nice, your own contract from home, or a travel eSIM. The answer turns on a legal detail that most guides state confidently and get wrong in one direction or the other, and on the fact that this country is small enough for your handset to change its mind about which nation it is in while you are walking down a flight of steps.
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One Licence, One Network, No Competition
Most countries make you weigh operators against each other. Monaco removes the exercise. Monaco Telecom holds a public concession from the Monegasque government, renewed in May 2021, and it is the only company permitted to use mobile spectrum inside the frontier. The state holds a stake in the business. No rival has ever been licensed, no virtual operator resells a competing network, and nothing in the market pushes the price of a Monegasque line downwards.
The network that monopoly produced is, in fairness, excellent. Monaco Telecom finished a 5G build across the entire principality years ahead of most European capitals, and it engineered specifically for a country stacked vertically against a cliff. Coverage was extended into the underground car parks, the pedestrian galleries between wards, the shafts of the public lifts, and the 466 metre rail tunnel that holds the whole of Monaco-Monte-Carlo station. Very little of Monaco is a dead spot, which is unusual for somewhere with this much of itself below ground.
What that means for your purchase
Every eSIM sold for Monaco, from every provider, reaches you through those same masts. There is no faster network to hunt for and no better-covered one to pay a premium for. The comparison between Airalo, Nomad and Holafly here comes down to three things only: the price of the tier you need, the shortest duration each will sell you, and whether Monaco appears on the destination list of the wider regional plan you might already own.
Monaco Telecom Left the Prepaid Business
A decade ago you could walk into the Monaco Telecom store and leave with a pay-as-you-go card and a +377 number. That door has closed. The operator now sells monthly plans, including no-commitment ones, quoted in euros per month and built around what a resident wants: unlimited calls and texts within Monaco and metropolitan France, a data allowance usable across France, Europe, Switzerland and Andorra, and a Monegasque number people can call back.
Reported pricing puts an entry plan near 20 euros a month, with the 50 to 100 GB tiers landing somewhere between 30 and 50 euros. Those are not bad numbers for someone who lives here. For a visitor staying two nights they are absurd, and in most cases academic anyway, because the counter will ask for a valid identity document and proof of a Monegasque address before it activates anything.
Where the shops are, if you want to try anyway
Monaco Telecom's retail presence is small and residential in character: a store at 30 boulevard des Moulins up in Monte Carlo, and a second at 9 rue du Gabian down in the Fontvieille business quarter. Both keep ordinary Monegasque business hours rather than the round-the-clock schedule you would find at an airport, and neither is set up to hand a tourist a holiday bundle. Bring your passport, expect the address question, and expect to be steered towards a subscription. A no-commitment plan is still a subscription: you have to cancel it, it does not quietly expire when your flight home leaves Nice.
The practical consequence is worth stating plainly, because it inverts the advice on almost every other country page on this site. In Monaco there is no local card to compare against a travel eSIM. The comparison is between an eSIM, a French SIM, and whatever your home operator charges when your phone attaches to a network it does not have a deal with.
The EU Roaming Question, Answered Properly
Start with the law, because the law is unambiguous. Monaco is not a member of the European Union and it is not part of the European Economic Area. The Roaming Regulation that abolished surcharges across the bloc, and which the EU extended through to 2032, applies to EU and EEA states. It does not apply to the principality, any more than it applies to Switzerland or Andorra. Anyone telling you that roam-like-at-home covers Monaco because Monaco uses the euro and sits inside French customs territory is confusing three separate arrangements.
Now the part the strict version misses. A rule not applying does not mean operators cannot choose to include a destination anyway, and in Monaco a good many of them do. The clearest case is France. Orange customers have had access to the Monegasque network for years. On 5 March 2024 the arrangement widened: customers of Bouygues Telecom, Free and SFR gained access too, along with the sub-brands B and You, Sosh and RED by SFR and the virtual operators that ride those four networks. Those operators fold Monaco into their Europe zone, so a French plan generally behaves in Monte Carlo the way it behaves in Menton. Monaco Telecom's own subscribers were never part of that change, since they are already home.
Beyond France it fragments. Some EU operators list the principality in their Europe zone as a goodwill inclusion; plenty do not. British networks are the group most likely to be caught out, because EE, Vodafone, O2 and Three all define their European allowances against an EU and EEA list, and Monaco tends to sit outside it with Switzerland and Andorra, on a rest-of-world tariff that can run to several pounds a megabyte.
The only check that actually settles it
1. Open your operator's roaming or destinations page, not a travel blog.
2. Search the list for the word Monaco specifically. Do not accept a headline such as forty-eight European destinations as evidence.
3. If Monaco is absent, look for what the out-of-bundle rate is, because that is the number you will pay.
4. If it is absent and the rate is ugly, put a Monaco eSIM on the phone before you travel and be done with it.
Two Square Kilometres, Four Networks in Range
Monaco is 2.08 square kilometres and roughly a twenty minute walk from the Fontvieille marina to the Larvotto beaches. Everything around it is France. Beausoleil sits directly above Monte Carlo, Cap d'Ail wraps the western side, Roquebrune-Cap-Martin the eastern, and along the boulevard de France the frontier runs down the middle of the road, so one pavement is Monegasque and the other is French.
Radio does not respect that line. Orange, SFR and Bouygues masts on the slopes above Moneghetti and behind Larvotto put usable signal deep into the principality, and Monaco Telecom's own coverage spills the other way into the French communes. A phone left on automatic selection does what it is designed to do and attaches to the strongest cell available, which in the upper wards is frequently a French one. Walk down towards Port Hercule and it hands back. Nothing on the screen announces either move.
How this turns into a charge, or a dead connection
Plans are sold against country codes, not against the ground you are standing on. So a France or Europe eSIM keeps working in Monaco right up until the moment your handset hands over to Monaco Telecom, then goes dark, usually just as you open the map. Meanwhile a home contract with no Monegasque arrangement can attach to Monaco Telecom while you are still on the French side of the boulevard, and start billing at out-of-bundle rates before you have crossed anything. Both of these are the system working as designed.
Pinning the network by hand
1. On iPhone, open Settings, then Mobile Data, then Network Selection, and turn Automatic off.
2. On Android, open the mobile network settings and find Network operators, then untick automatic selection.
3. Wait for the scan and choose deliberately: Monaco Telecom if you are running a Monaco plan, or your own French carrier if you are staying in Beausoleil and only walking down for the day.
4. Switch it back to automatic before you leave, or you will spend the drive out past Menton with no service at all.
What Every Option Actually Costs
Set the options beside one another in euros and the shape of the decision becomes obvious very quickly. Dollar prices below are the provider list prices, with an approximate euro figure alongside.
| Option | What you get | Price | Suits |
|---|---|---|---|
| Monaco Telecom entry plan | Monthly data, unlimited calls and texts, a +377 number | From around 20 EUR per month | Residents, and only residents |
| Monaco Telecom large plan | 50 to 100 GB per month | Around 30 to 50 EUR per month | Anyone who can show a Monegasque address |
| Orange Holiday Europe eSIM | 30 GB over 14 days across 39 destinations, Monaco listed | Around 50 USD, near 46 EUR | A Riviera fortnight based in France |
| Nomad Monaco | 1 GB, 7 days | 4 USD, near 3.70 EUR | The cheapest way to arrive connected |
| Airalo Monaco | 1 GB, 7 days | 5 USD, near 4.60 EUR | A weekend, with a cross-border catalogue behind it |
| Nomad Monaco | 5 GB, 30 days | 14 USD, near 13 EUR | A working week in the principality |
| Airalo Monaco | 5 GB, 30 days | 16 USD, near 15 EUR | The same week with top-ups on hand |
| Holafly Monaco | Unlimited, 5 days | 19 USD, near 17.50 EUR | Heavy uploading on a short stay |
| Holafly Monaco | Unlimited, 15 days | 47 USD, near 43 EUR | Grand Prix or yacht show fortnights |
| Home contract, no Monaco deal | Out-of-bundle roaming rates | Frequently several euros per megabyte | Nobody, ever |
Two things jump out of that table. The first is that the local operator is not really a competitor, because it is not selling to you. The second is that the gap between the cheapest eSIM and the worst-case roaming bill is not a matter of a few euros of savings, it is a matter of two or three orders of magnitude. Very few country comparisons on this site are that lopsided, and it is a direct consequence of Monaco being small, wealthy and outside the roaming rules at the same time.
Which Side of the Line Is Your Trip On
Because there is no Monegasque tourist card, the honest split is between running a French plan and running a Monaco one. Both are defensible, and which is right depends almost entirely on where you sleep.
Run a French plan when
Buy a Monaco eSIM when
One practical note for the day-trip crowd, since it comes up constantly. If you arrive on the number 600 coastal bus or the train from Nice and your only concern is a few hours of maps and photographs, the free government WiFi around place du Casino, place d'Armes and the Oceanographic Museum will cover more of that than you expect, and a Monaco eSIM at four dollars covers the rest. That is a smaller sum than the bus fare and the museum ticket combined, which makes agonising over it a poor use of a day in the sun.
For where the signal actually holds up ward by ward, and for the arrival routes from Nice, the Monte Carlo guide goes through it street by street. For the provider comparison and current tiers, the Monaco eSIM guide has the full breakdown, and the eSIM Finder will size a plan against the length of your stay.
Frequently Asked Questions
Can a tourist actually walk into a shop in Monaco and buy a SIM?
Realistically, no. Monaco Telecom stopped selling prepaid, and the monthly plans that replaced it are sold against a valid identity document plus proof of a Monegasque address, which a visitor does not have. The two stores, on boulevard des Moulins in Monte Carlo and rue du Gabian in Fontvieille, keep ordinary business hours and are set up for residents rather than for holidaymakers. If you want a local number badly enough, the workable version is a French prepaid card bought in Nice, since French operators now include the principality in their coverage.
Everyone says EU roaming does not work here. Then why was I never charged?
Because the rule and the practice have drifted apart. The Roaming Regulation genuinely does not extend to Monaco, which is neither an EU nor an EEA state. Separately from that, several operators include it voluntarily, and all four French networks now do after Bouygues, Free and SFR joined Orange in March 2024. So a French or French-owned plan usually costs you nothing extra, while a British one very often does. Neither camp is wrong about their own experience; they are describing different operators.
My Europe eSIM covers forty-something countries. Is Monaco one of them?
Check the list rather than the headline, because the answer is frequently no. Regional Europe products tend to be assembled from EU and EEA agreements, and Monaco sits outside both, so it gets dropped. Airalo's Eurolink and Nomad's Europe plan are two well-known examples that leave it off. What makes this hard to spot is that the eSIM keeps working for a while inside Monaco on a French cell reaching across the border, so the failure arrives later and looks random.
Should I lock my handset to one network for the whole visit?
It is worth doing if you are moving between the wards a lot, because automatic selection will otherwise hop between Monaco Telecom and the French carriers as you climb and descend. Pin it to Monaco Telecom when you are running a Monaco plan, or to your own French operator if you are commuting down from Beausoleil. The one thing to remember is to release it afterwards. A phone still locked to Monaco Telecom will be useless somewhere on the road towards Ventimiglia or Antibes.
I am staying in Beausoleil and walking down into Monaco each day. What do I buy?
A French plan, and nothing else, provided your operator is one of the four that now reach the Monegasque network. Beausoleil sits directly uphill of Monte Carlo, the border is the boulevard de France, and your accommodation, your groceries and your evenings are all on the French side. Pin the phone to your French carrier so it stops wandering, accept that the signal may thin out in the deeper Monegasque tunnels and car parks, and spend what you saved on lunch, since the public lifts that drop you into the principality cost nothing.