Three islands, one active volcano, a thin telecom market
The Comoros are three populated islands — Grande Comore (with Moroni and Mount Karthala, the active volcano), Anjouan, and Mohéli — strung between Mozambique and Madagascar in the Mozambique Channel. The total population is just over 900,000, the total land area about 2,000 km², and the entire consumer cellular market is about the size of a single mid-tier African city's. That last fact drives the price story: wholesale cellular interconnect to a small island archipelago is genuinely expensive, and that cost lands somewhere on every traveler's bill regardless of vendor.
Roamzy charges $180.02 per gigabyte in Comoros. That's $0.1758 per megabyte, billed in real time on Comorian networks. The wholesale rate is at the high end of our global table — that's not our markup, it's the market reality of a 900,000-person archipelago. We don't pretend otherwise.
No subscription, no expiry, no minimum bundle. One per-MB rate across 193 countries means the same model — pay for what you actually used.
How much does Roamzy cost on a typical visit?
Comoros visitors lean heavily on hotel and dive-resort Wi-Fi for downloads, calls, and email. Cellular fills the gaps — navigation, the WhatsApp to a guide, the camera-translator on a French or Arabic sign. Plan on 0.1–0.3 GB/day on cellular:
| Trip pattern | Roamzy ($180.02/GB) | Tourist roaming pass | Local SIM at Moroni |
|---|---|---|---|
| 5 days (0.8 GB cellular) | $144.02 | $80–200 | $5–15 + KYC and a passport scan |
| 10 days (1.5 GB cellular) | $270.03 | $160–400 (often two passes) | $10–25 + 30-day cap |
| 2 weeks (2 GB cellular) | $360.04 | $200–500 | $15–35 + paperwork |
Competitor prices in columns 3 and 4 are 2025 ranges based on typical offerings; many home carriers either don't list Comoros in tourist packs or charge unmetered roaming at $10+/MB. Roamzy's rate in column 2 is our actual published rate from the pricing page.
For a longer stay — two weeks plus, or repeat trips — a local Comorian SIM bought in Moroni saves money once you've absorbed the registration time. For a short visit, the eSIM is the lighter call: pay for the half-gigabyte you actually used, balance survives.
Coverage across the three islands
| Island / area | Reality |
|---|---|
| Grande Comore (Moroni, Itsandra, Mitsamiouli) | 4G across the populated coast and the capital area |
| Mount Karthala access roads | 4G to the village trailheads; sparse on the cone itself |
| Anjouan (Mutsamudu, Domoni) | 4G in the towns; weakening on the road across the island |
| Mohéli (Fomboni) | Workable 4G in the main settlement; minimal on the south coast |
| Inter-island flights and ferries | Short hops; eSIM re-attaches on landing |
| Marine reserves, dive sites, outer cays | Minimal cellular; satellite or none |
The volcano hike up Karthala is one of the quieter signal experiences — there's coverage at the village base and patches at viewpoints depending on antenna line-of-sight; the crater itself you should treat as off-grid.
How do I install my Roamzy eSIM?
| Plug type | Voltage | Frequency | iOS | Android |
|---|---|---|---|---|
| Type C, E | 220 V | 50 Hz | iPhone XS+ | Pixel 3+, Galaxy S20+ |
- Sign in to Roamzy via Telegram or Google
- Your first eSIM is free and comes with real data on us. After that, top up from $20 in stablecoins (USDT or USDC): no cards, no banks, no FX surcharges
- The QR code appears in your dashboard as soon as the eSIM is issued
- On the iPhone itself (iOS 17.4 or newer), tap Tap to install in the QR card; otherwise Settings → Cellular → Add eSIM → scan QR (do this on home Wi-Fi before you fly)
- The counter starts when you land at Prince Said Ibrahim International (HAH) in Moroni
Supported stablecoins and common setup errors are in the FAQ. The dashboard handles top-ups in USDT.
What are Roamzy's honest limitations?
The rate is high — by some distance the highest in our table. That's the wholesale cost of cellular to a 900,000-person archipelago in the Indian Ocean, not a markup we tacked on. The model still makes sense for a short trip because you pay only for the bytes you actually used, and the balance carries from trip to trip:
- No welcome promo that flips on the second top-up. Top-up #1 and top-up #20 cost the same per megabyte.
- No fine-print throttling. One rate, full speed where there's signal.
- No auto-renewal. Balance runs out, the eSIM stops.
Data in Comoros is genuinely expensive, and we would rather print the real per-MB number than dress it up as a bundle. An honest price needs no decoration, and ours has none to remove.
What if my route continues across the Indian Ocean?
- Madagascar — common pairing east, separate country rate
- Tanzania — overland route to Dar via the mainland flights
- If you want the underlying mechanics — how roaming actually gets priced and why it hurts