Three French departments, one rate
The French Caribbean for our pricing purposes is a combined region: Guadeloupe (the main island plus Marie-Galante, Les Saintes, La Désirade), Martinique to the south, and French Guiana on the South American mainland. All three are overseas departments of France — the euro, French language, EU consumer law — but they're a long way from Paris and from each other. A traveler typically does Guadeloupe and Martinique as a hop on the L'Express des Îles ferry, with the optional Dominica stop in between (covered by a separate per-country rate). French Guiana is its own trip — Cayenne, Kourou for the European spaceport, the Maroni river. Same eSIM follows you across all three.
Roamzy charges $1.13 per gigabyte across the French Caribbean. That's $0.0011 per megabyte, billed in real time on the local networks. No subscription, no expiry, no minimum bundle. One per-MB rate across 193 countries is the shape of the invoice, not a marketing line.
How much will Roamzy actually cost on this trip?
A typical visitor uses 0.5–1 GB per day: maps from Pointe-à-Pitre to a beach on Grande-Terre, the ferry schedule, the camera-translator on a French menu (rare — most are bilingual or English-friendly), video calls home, the satellite-launch updates from Kourou for the curious. Resort and gîte Wi-Fi handles a lot. Call it 0.7 GB/day:
| Trip length | Roamzy ($1.13/GB) | Tourist roaming pass | Cruise-ship Wi-Fi |
|---|---|---|---|
| 1-day port stop (0.5 GB) | $0.56 | — | $20–35 |
| 5 days (3.5 GB) | $3.94 | $30–80 | — |
| 10 days (7 GB) | $7.88 | $60–130 | — |
Competitor prices in columns 3 and 4 are 2025 ranges based on typical offerings; exact figures depend on your home carrier, your hotel, and your cruise line. Roamzy's rate in column 2 is our actual published rate from the pricing page.
The combined rate is one of our cheapest globally — a structural quirk of how French overseas-department telecoms are wholesale-priced. We pass it through. Cruise-day passengers stopping at Pointe-à-Pitre or Fort-de-France get a particularly easy decision.
What works across the region
| Region | 4G/5G | Reality |
|---|---|---|
| Guadeloupe (Pointe-à-Pitre, Basse-Terre, Grande-Terre) | 4G/LTE | Solid in towns and on the resort coasts; weaker in the National Park |
| Marie-Galante, Les Saintes, La Désirade | 4G | Coverage in the villages, gaps on the boats and remote beaches |
| Martinique (Fort-de-France, Le Diamant, Sainte-Anne) | 4G/LTE | Stable across the populated coast; weaker on Mount Pelée trails |
| French Guiana (Cayenne, Kourou) | 4G/LTE | Solid in the coastal cities; rainforest interior is silent |
| The Maroni river / Saint-Laurent-du-Maroni | 4G in town | River journeys upstream are off-grid |
| L'Express des Îles ferry | 4G with gaps | Coverage near both ends, brief silence in mid-channel |
How do I install my Roamzy eSIM?
| Plug type | Voltage | Frequency | iOS | Android |
|---|---|---|---|---|
| Type C, D, E | 230 V | 50 Hz | iPhone XS+ | Pixel 3+, Galaxy S20+ |
- Sign in to Roamzy via Telegram or Google
- Top up the eSIM with a minimum of 20 USDT — stablecoins, no cards, no banks, no FX surcharges
- The QR code appears in the dashboard once payment confirms
- Settings → Cellular → Add eSIM → scan QR
- The counter starts the moment you land at PTP (Guadeloupe), FDF (Martinique), or CAY (French Guiana)
Supported stablecoins, networks, and common iPhone/Android setup errors are in the FAQ.
What are Roamzy's honest limitations?
The combined French-Caribbean rate is genuinely cheap and we say it openly — there's no first-purchase promo on top, no fine-print throttle once you've used a few gigabytes, no subscription that auto-renews three months later. Same logic on top-up #1 and top-up #20.
It's not a marketing gimmick — it's an engineering decision born from indifference to gimmicks. You can't make a tariff cheaper than no fine-print and no expiry — so we don't.
What if my trip continues to other countries?
The French Caribbean is the centre of an inter-island ferry route through the Lesser Antilles, and French Guiana borders Suriname and Brazil:
- Dominica — between Guadeloupe and Martinique on the L'Express des Îles ferry
- Saint Lucia — south of Martinique, separate country rate
- Suriname — west of French Guiana over the Maroni river crossing
- If you want the underlying mechanics — how roaming actually gets priced and why it hurts