Mayotte disorients anyone: you're in the heart of the Mozambique Channel, between Comoros and Madagascar, surrounded by one of the planet's largest lagoons... yet you're on French and European soil. This completely changes the equation for internet in Mayotte compared to its neighbors. In this guide, I'll tell you about the pleasant surprise and also the fine print: why your Spanish plan works here without extra charges, what the network is really like after Cyclone Chido in December 2024, and in which cases it's still worth getting separate data.
Internet in Mayotte: the quick answer
In Mayotte, your Spanish plan with EU data works without surcharges because the island is a French department and a European outermost region. The mobile network was rebuilt after Cyclone Chido and now operates normally in populated areas. You only need separate data if your allowance is small.
That's the short version, and it already suggests that Mayotte plays in a different league than its neighbors in the Mozambique Channel. In Comoros or Madagascar, just a few kilometers away, international consumption skyrockets; here, it doesn't, because for telephony purposes, you're treated as if you were in France. In other words, your gigabytes cross the Mozambique Channel with you at the usual price, within reasonable usage limits that a normal tourist won't even approach.
So, why complicate things? For three very specific reasons: because your plan has little data and you'll rely heavily on maps here, because your plan isn't "EU" type or you reside outside the Union, or because you prefer ample data without constantly monitoring your usage. And there's a fourth factor that doesn't exist in other French departments: the state of the network after the cyclone, which I'll explain without alarmism a few sections below.
Mayotte is France and Europe: what your mobile gains
This is the key that almost no one understands before flying. Mayotte is not a foreign country or an "associated" territory: it has been an overseas department and region of France since March 31, 2011, when it became the 101st department. And since January 1, 2014, it has also been one of the outermost regions of the Union, with the same status as the Canary Islands for Spain or Madeira for Portugal. Before that date, it was not part of the EU, and that change transformed everything for your mobile.
What does this mean in practice? That the European "roam like at home" regulation applies to it, the same one that allows you to use your data in Italy or Germany without extra cost. Mayotte is explicitly listed among the French territories in the European zone, along with Guadeloupe, Martinique, Guiana, and Reunion. When you land in Dzaoudzi-Pamandzi, your mobile connects to the Orange, SFR, or Only network, and you continue to use your Spanish allowance.
It's a little-known and huge advantage: you're on an Indian Ocean island, more than 8,000 km from Madrid, replying to messages with your neighborhood plan. Of course, that "free" comes with conditions, which I'll review below.
Network status after Cyclone Chido
We need to talk about this honestly, because it's what generates the most doubts. On December 14, 2024, Cyclone Chido — the most violent in decades — devastated the island's infrastructure, and telecommunications took a brutal hit. In the following days, Orange operated with barely 13 to 16 antennas out of the island's 67, and population coverage was around 39% on December 19. Only reported around 40%, with ten of its 54 sites destroyed. The bottleneck was not just the downed antenna, but electricity: without power, there's no network.
Recovery, however, was rapid: on December 23, Orange declared 63% population covered, and on January 6, 2025, it announced 90%. SFR even used about twenty Starlink satellite links to reactivate isolated sites. Then came the reinforcement: in April 2025, Arcep allocated 3.4-3.8 GHz frequencies to Orange, SRR, and Telco OI for fifteen years, and that same month, Orange switched on its 5G.
Translated for today's traveler: the mobile network is now operational in the areas where you'll be. Don't expect the density of mainland France, but you won't arrive on an uncommunicated island.
All options at a glance
Before going into detail, here's the complete map. In Mayotte, there are four realistic ways to connect, and since the starting point — your own plan working without surcharges — is so good, the balance shifts differently than in other destinations. Look at the "who it suits" column: the answer depends on your Spanish plan, not on the island.
| Option | Approximate price | Process | Who it suits |
|---|---|---|---|
| Your Spanish plan (EU zone) | Free, included in your allowance | None | Most people: plans with plenty of gigabytes |
| Accommodation Wi-Fi | Free | None | Nighttime support, never outside the hotel |
| Local SIM (Orange, SFR, Only) | From ~€10-30 depending on package | Medium: document in-store | Long stays or high consumption |
| Digital travel card | From ~€10 for a few GB | None: QR and ready | Small allowances or residents outside the EU |
As you can see, the first row is no longer the usual trap: here, your own plan is a legitimate option and, for many, the winner. The local SIM and digital card come into play when your allowance runs short or your operator does strange things with overseas departments. A pocket router makes little sense on such a small island; if you're still considering it, check out the comparison of eSIM vs. pocket Wi-Fi.
Your Spanish plan: free, but with fine print
This is the star option in Mayotte, so it's worth understanding it well. With a Spanish plan that includes the EU zone — which is the vast majority today — when you land, you continue to use calls, SMS, and data at the same price as at home. There's no need to activate or install anything: the phone connects to the local network automatically. For one or two weeks of normal use, this is usually sufficient, and at zero cost.
Now, the three nuances you should check before flying:
- Fair use policy: operators set a gigabyte cap tied to the price of your plan, so a cheap plan with many gigabytes may offer significantly less outside Spain.
- Permanent use: the rule is designed for travel, not for living abroad for months. If you stay for long weeks, your operator may warn you.
- Operator's own zones: this is the real trap, and it particularly affects Mayotte.
Some low-cost plans exclude overseas departments from their EU zone, or place them in a separate zone with a surcharge. Check your operator's terms by searching for "Mayotte" or "DOM" before assuming it's included.
Checking takes two minutes in your operator's app and saves you a scare. If you get confused with zones and per-megabyte prices, reading how much international roaming costs will clarify a lot.
When a digital travel card is equally worthwhile
Just because you have European roaming included doesn't mean it's always the best idea. There are four very clear profiles for whom a travel data card still makes sense in Mayotte, and it's worth checking if you're one of them.
- Your allowance has little data. Here, you'll constantly use maps: the island is explored by car on narrow, poorly marked roads. If your plan comes with 5 or 10 GB and you already push them to the limit at home, you'll run short.
- Your plan doesn't cover DOMs or you live outside the EU. If your plan excludes Mayotte from the European zone, or you reside in Latin America or the UK, you'll directly incur expensive international rates.
- You want a real plan B. With the network still consolidating after the cyclone, having two profiles on your phone allows you to switch operators if one falters in your area.
- You don't want to monitor your usage. A generous separate package gives you peace of mind and keeps your Spanish allowance intact.
The beauty of the digital card is that you buy it from home, install it with a QR code, and land with data without touching your physical card. If it's your first time, start with what an eSIM is and then follow the eSIM guide for Mayotte, with step-by-step installation.
Accommodation Wi-Fi and newly arrived fiber
Hotels, gîtes, and accommodations in Mayotte usually offer Wi-Fi, and the temptation is to think "I'll manage with that." It works as support, but building your trip around it is a mistake, and on this island more than others for a specific technical reason: the Mahoran fixed network is under construction.
Mayotte never had a uniformly deployed copper network, and the cyclone irreversibly damaged some of what existed. Fiber is simply arriving now: construction for the Mayotte Fibre plan, awarded to Mayotte THD, began in May 2025, with the first connections in early 2026 and the goal of connecting more than 60,000 homes by 2030. As of April 1, 2026, fiber-to-the-home coverage was around 10%. Translated: many accommodations still rely on limited connections or their own mobile network.
Use Wi-Fi for what it's good for: downloading offline island maps at night, syncing photo backups from the day, and streaming something without using data. For everything else — getting around, browsing, booking a boat trip on the fly — you need your own connection. Wi-Fi here is a nice complement, never the backbone of your trip.
Local Mahoran SIM: Orange, SFR, and Only
If your case involves a long stay or high consumption, a local SIM is a reasonable alternative. Three mobile networks operate in Mayotte: Orange Mayotte, SFR Mayotte (SRR), and Only (Telco OI). All three have stores in Mamoudzou and received fifteen-year licenses in April 2025 in the 3.4-3.8 GHz band to deploy 5G. Orange switched on its 5G that same month; SFR activated five zones starting June 2025: Doujani, M'tsapéré, Majicavo, Bouyouni, and Combani.
As it is French territory, to activate a line, you will be asked to identify yourself with a document —ID or passport—, a more formal process than in other tropical destinations. Some things to consider:
- Orange is the operator with the most extensive network on the island and the one that recovered coverage fastest after the cyclone.
- SFR and Only compete on price, with prepaid data packages starting at low figures.
- The offer at Dzaoudzi-Pamandzi airport is limited; it's more common to buy in Mamoudzou.
The "but" is not the price, but the logistics: taking out your Spanish card, inserting the new one, and losing your Spanish number unless you have Dual SIM. Since you already have European roaming included, a local SIM only pays off for long stays. I compare it in detail in eSIM vs. local SIM.
Local SIM vs. digital card, face-to-face
When your plan runs short and you need to boost your data, the real decision is between a local Mahoran SIM and a digital card. Both rely on the same Orange, SFR, or Only antennas, so the signal you receive is the same: what changes is convenience, paperwork, and whether you keep your number.
| Criterion | Local SIM (Orange / SFR / Only) | Travel eSIM |
|---|---|---|
| Approximate price | From ~€10-30 depending on package | From ~€10, depending on days and GB |
| Documents | ID or passport in-store | None |
| Where to buy | Physical store in Mamoudzou, in person | Online, from home, before flying |
| Time until data is active | Travel, queue, and activate | Minutes: scan QR and done |
| Network used | Orange, SFR, or Only | The same local network |
| Your Spanish number | Lost with a single slot | Remains active with Dual SIM |
| Switching operators if it fails | You have to buy another card | You can carry a backup profile |
My take for Mayotte: if you're staying for a month or will consume a lot, local prepaid is worthwhile. But for the typical traveler — one or two weeks of lagoon, diving, and hiking — the digital card wins for convenience: you install it at home, arrive with data, and keep your Spanish number for bank SMS. No hassle after a very long flight with a layover.
Coverage: lagoon, Mont Choungui, and the interior
Mayotte is small — two islands, Grande-Terre and Petite-Terre — but mountainous and very green, and that dictates where you have signal. The rule is simple: coverage is concentrated where people live. Mamoudzou and its area, Petite-Terre with Dzaoudzi and Pamandzi, and the large towns do well, with reliable 4G and 5G in several urban areas. The interior of Grande-Terre is another story.
- The lagoon: one of the largest enclosed lagoons in the world, and the main reason to come. On boat trips to the coral reef, for diving, or for spotting humpback whales between July and October, the signal becomes intermittent as you move away from the coast.
- Mont Choungui: the climb is short but very steep, and from the top, you have a 360° panoramic view of the island and the reef. Coverage is patchy on the ascent, somewhat better at the summit due to the altitude.
- Interior and south of Grande-Terre: amidst forests, ylang-ylang fields, and dirt tracks, expect dead spots.
The golden rule is the same as always on volcanic islands: download offline maps before heading out, especially if you're driving south or hiking. No card will give you a signal where there's no antenna. For daily life in Mamoudzou and Petite-Terre, coverage is more than adequate.
How much data you need in Mayotte
Before buying anything, calculate by days and by actual usage, which is almost always lower than it seems. In Mayotte, you'll mostly spend data on maps and road navigation, messaging, some social media, and photos of the lagoon. It's not an intensive remote work destination, so consumption remains contained. This table gives you a reference by activity and day.
| Daily activity | Approximate consumption |
|---|---|
| WhatsApp and messaging | ~20-50 MB/day |
| Maps and car navigation | ~80-200 MB/day |
| Social media (scroll and stories) | ~150-300 MB/day |
| Uploading photos and some videos | ~200-400 MB/day |
| Video call (30 min) | ~300-500 MB |
| Video streaming (1 h) | ~1 GB |
Summing up active tourist use, it comes to about 500 MB to 1 GB per day. With that reference, for a week of lagoon and excursions, 5 GB is good; for two weeks exploring Grande-Terre and Petite-Terre, a 10-15 GB plan is ample; and if you're going to work remotely or make daily video calls, aim for 20 GB or more. A trick I always use: save heavy streaming and photo backups for accommodation Wi-Fi. This way, you stretch every gigabyte, whether you have your Spanish plan or a separate package.
Frequently asked questions
Do I have free EU roaming in Mayotte?
Yes. Mayotte has been a French department since 2011 and an outermost region of the European Union since 2014, so it falls under the "roam like home" zone. With a Spanish plan that includes the EU, you can use data, calls, and SMS without surcharges, subject to the fair use policy.
Does the network work well after Cyclone Chido?
Yes, in populated areas. After the cyclone in December 2024, Orange went from 39% coverage in mid-December to 90% in January 2025, and 5G was activated in 2025. Expect occasional outages, not an isolated island.
Do I then need an eSIM if I go to Mayotte?
Not always. If your plan includes plenty of gigabytes, European roaming is sufficient. It is advisable if your plan has limited data, if your operator excludes overseas departments, if you reside outside the EU, or if you want a backup profile in case one operator is weak.
Does my low-cost plan include Mayotte in the EU zone?
Most of them do, but some low-cost plans exclude overseas departments or put them in a separate zone with a surcharge. Look for "Mayotte" or "DOM" in your operator's terms and conditions before you fly.
Where can I buy a local SIM in Mayotte?
In Orange, SFR, or Only stores, especially in Mamoudzou; at Dzaoudzi-Pamandzi airport, the offer is limited. As it is French territory, you will be asked for an identification document, so bring your ID card or passport.
Is there coverage in the lagoon and on Mont Choungui?
Irregular. On boat trips in the lagoon, the signal is lost as you move away from the coast, and on the ascent to Mont Choungui there are sections without coverage. Download offline maps before you go: no card provides a signal where there is no antenna.
How many GB do I need for a week in Mayotte?
With active tourist use—maps in the car, messaging, social media, and photos—you will use about 500 MB to 1 GB per day. For a week, 5 GB is good; for two weeks, 10-15 GB. If you work remotely, choose 20 GB or more.
Is there fiber optic in Mayotte accommodations?
Little, yet. Deployment started in 2025 and as of April 1, 2026 covered about 10%, with a target of 60,000 households by 2030. Many accommodations rely on limited connections or directly on the mobile network.
Conclusion
The great news about Mayotte is that you don't have to deal with international rates here: as a French department and an outermost region of the EU, your Spanish plan travels with you without surcharge despite being in the heart of the Mozambique Channel. For most, that's enough and at no cost. The second, the honest truth: the network took a very hard hit with Cyclone Chido and has been rebuilt quickly, but don't expect the density of mainland France or fiber optic in accommodation. And the third: in the lagoon, inland, and climbing Choungui, you will lose signal, so always have your maps downloaded. Check before you fly if your operator includes Mayotte in the European zone; if not, or if your data allowance is short, take a look at the eSIM for Mayotte and compare it with your current roaming plan.
