eSIM for Reunion

Reunion rewards a good data plan, whether you're tracing the switchbacks into Cirque de Mafate or catching sunset along the Saint-Gilles coast. Heetch works in parts of the island when you need a ride, though rentals are still the easiest way to reach the volcano road and the high cirques. Save offline maps before you lose signal in the mountains, and let a translation app help with the French and Creole you'll pick up in Saint-Denis.

How to install your Réunion eSIM in 3 steps

Your eSIM installs in minutes over any Wi-Fi connection, so it's best to finish the whole process before you board your flight to Roland Garros Airport near Saint-Denis.

1. Buy your Réunion eSIM plan online and receive the QR code and activation details by email within moments of checkout.
2. While still connected to home Wi-Fi, scan the QR code to install the profile: on iPhone go to Settings > Cellular > Add eSIM; on Android go to Settings > Network & Internet > SIM Manager > Add eSIM. Do this before you leave, since Roland Garros Airport's arrivals hall Wi-Fi can be inconsistent.
3. After landing in Réunion, open Settings, select the new eSIM line, and enable data roaming for it so your phone switches from your home network to a local partner network such as Orange or SFR as soon as you land.

Mobile network coverage in Réunion

Saint-Denis, Saint-Pierre and the main towns

Réunion is served by four operators: Orange, SFR, Free and Telco OI. Orange generally has the widest reach and the strongest overall performance, with SFR close behind and holding a strong position in some urban pockets; Free rounds out the market with a smaller but still workable footprint. In Saint-Denis, the northern capital and administrative hub, and in Saint-Pierre, the main southern coastal city near the lagoon, 4G and pockets of 5G are dependable enough for video calls, navigation and streaming. Le Tampon, just inland of Saint-Pierre, is one of the few towns where 5G has also been switched on.

Coast, rural interior and the volcano

The coastal ring road that circles Réunion carries the most consistent signal on the island, and towns such as Saint-Gilles-les-Bains stay well connected thanks to their position along it. Move inland and coverage drops quickly: the three volcanic cirques of Cilaos, Salazie and Mafate are natural amphitheaters ringed by cliffs, and while Cilaos and Salazie town centers usually get patchy 4G, signal thins out fast on the surrounding trails and altitude passes. Mafate has no road access at all, and phones there typically show no signal whatsoever, so hikers should download offline maps in advance. Higher up, near the rim and summit of Piton de la Fournaise, roughly ninety minutes south of Saint-Denis, coverage is similarly thin and can disappear entirely depending on where you stand.

Getting around the island

Because reception tracks the coastal highway so closely, journeys by car or bus along the ring road between Saint-Denis, Saint-Pierre and Saint-Gilles-les-Bains rarely lose signal, which makes an eSIM reliable for navigation apps and ride bookings. Once you turn off that route toward the cirques or the volcano access road, expect your connection to eSIM home network partners to weaken well before you reach the trailheads.

How much data do you need for your trip to Réunion?

Usage style	Daily estimate	1-week trip	Good fit
Light (maps, messaging, occasional browsing)	~300 MB	2-3 GB	See light-use plans
Moderate (social media, music, some video calls)	~750 MB	~5 GB	See moderate-use plans
Heavy (streaming, uploads, hotspot sharing)	1.5 GB+	10-20 GB	See heavy-use plans

eSIM vs. roaming vs. a local SIM in Réunion

	Travel eSIM	Home-carrier roaming	Local SIM
Typical cost	From £0.61	Often £4-£11 per day, or £62-£155 for a two-week trip on non-EU carriers	Comparable to an entry-level eSIM plan, plus the hassle of finding a shop
Setup	QR code scan before you fly, live on arrival	Automatic, but often not switched on by default	In person at an Orange, SFR, Free or Telco OI outlet after landing
Keep your number	Yes, alongside your existing SIM	Yes	No, you receive a new Réunion number
ID/passport needed	Sometimes a document upload, no in-person check	No	Yes, a valid passport or national ID is required under French prepaid SIM registration rules, with no IMEI registration involved

A local SIM can make sense if you're relocating to Réunion for months rather than weeks, since Orange, SFR and Free all run boutiques in Saint-Denis and Saint-Pierre where you can register a number in person; but if your first stop is one of the cirques or the volcano access road, sort out an eSIM before you leave, since there's no shop out there to walk into.

Tips for staying connected in Réunion

• Save 112 as your go-to emergency number; it's prioritized on all four networks and routes to 15 for SAMU ambulance service, 17 for police, or 18 for the fire brigade.
• Download offline maps for the Cirque de Mafate and the upper reaches of Piton de la Fournaise before you set off, since signal there is minimal to nonexistent.
• Stick to the coastal ring road when you need a reliable connection for calls or uploads; it's the most consistently covered stretch on the island.
• If your trip is EU/EEA-based, check whether your home plan already includes Réunion at domestic rates, since it's a French overseas region inside the EU/EEA roaming zone.
• Expect a small amount of extra latency compared to mainland France, since most of Réunion's internet traffic routes through continental Europe rather than a shorter regional path.
• Planning a wider Indian Ocean itinerary? Pair your Réunion plan with an eSIM for Africa for onward travel.

Traveling beyond Réunion?

If your trip continues past Réunion, keep the same connectivity approach going with an eSIM for France for a mainland stopover, an eSIM for South Africa or an eSIM for Kenya for an African safari extension, an eSIM for Maldives or an eSIM for Sri Lanka for more Indian Ocean island time, or an eSIM for India if you're routing home through the subcontinent.