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Comoros beautiful beaches and tropical islands

Comoros eSIM Guide 2026

Grande Comore • Anjouan • Mohéli • Mount Karthala

Two networks, one archipelago — and a fourth island that is not part of it

📱 Comoros eSIM Coverage Guide

Comoros eSIM coverage map showing the two national networks Comores Telecom Huri and Yas Comores across Grande Comore Moroni Anjouan Mutsamudu and Mohéli Fomboni with 4G in the towns 5G launched in Moroni in May 2025 and no coverage on Mount Karthala or at sea
Click to enlarge

Complete Comoros eSIM coverage guide with network details

Comores Télécom (“Huri”)

State-owned incumbent · MCC-MNC 654-01

Sole operator in the country until 2016
4G in Moroni, Mutsamudu and Fomboni
Authorised for 5G on 15 May 2025

Yas Comores (ex-Telma)

Axian group · MCC-MNC 654-02

Licensed 2015, launched 2016, broke the monopoly
Renamed from Telma to Yas in November 2024
Slightly the larger of the two by subscribers

Those are the only two. If a site tells you your Comoros eSIM runs on Orange, Airtel, Vodafone or MTN, it is reading a plan-level label rather than a real Comorian network. The country code is MCC 654 and only 654-01 and 654-02 are assigned.

Quick Comoros Facts

🏝️

3 Islands in the Union

Grande Comore (Ngazidja), Anjouan (Nzwani), Mohéli (Mwali)

🗣️

Languages

Comorian (Shikomori), French and Arabic — all three official

💰

Currency

Comorian franc (KMF), pegged to the euro at 491.96775 KMF = €1. Not the CFA franc.

🌋

Mount Karthala

2,361 m, one of the world's most active volcanoes, dominates Grande Comore

👥

Population

Around 850,000 people — one of Africa's smallest countries by population

🕒

Time Zone

UTC+3 (East Africa Time), no daylight saving at any point in the year

📡

Mobile Networks

Two: Comores Télécom (Huri) 654-01 and Yas Comores 654-02. Regulator: ANRTIC.

🛂

Visa

Visa on arrival at Prince Said Ibrahim Intl (Hahaya, HAH) for most nationalities, paid in cash. Confirm with your embassy.

🌺

Perfume Islands

A leading world producer of ylang-ylang, used in French perfumery

Getting between the islands is the real planning problem. There is no bridge and no road. You move by small aircraft or by boat, both of which are weather-dependent and both of which change or cancel at short notice. Build slack into your itinerary, and do not book a same-day onward international flight off the back of an inter-island hop.

The Comoros and Mayotte Are Not the Same Country

The Comoro archipelago has four main islands. Three of them — Grande Comore, Anjouan and Mohéli — make up the independent Union of the Comoros. The fourth, Mayotte, voted against independence from France in 1974, became a French overseas department in 2011, and is an outermost region of the European Union. The Union of the Comoros claims Mayotte; France administers it. Whatever view you take of that dispute, the connectivity consequences are not ambiguous.

🇰🇲 Union of the Comoros

  • • Grande Comore, Anjouan, Mohéli
  • • Currency: Comorian franc (KMF)
  • • Networks: Comores Télécom (Huri), Yas Comores
  • • MCC 654
  • • Not in the EU roaming area — an EU or Spanish SIM roams here at international rates
  • • Dialling code +269

🇫🇷 Mayotte (France)

  • • French overseas department, EU outermost region
  • • Currency: the euro
  • • Networks: French operators
  • • MCC 647
  • • Inside the EU “roam like at home” area — an EU plan works there as it does at home
  • • Dialling code +262

What this means for your phone: a plan bought for the Comoros will not connect in Mayotte, and a French or EU plan will not connect in the Comoros. They are two separate roaming countries on two separate country codes. If Mayotte is on your itinerary, read our Mayotte eSIM guide instead — the answer there is completely different.

Why Travelers Choose eSIM for Comoros

The Reality of Island Connectivity

The Comoros sits in the Mozambique Channel between Madagascar and the Mozambican coast, and it is one of the least connected countries in the region. Roughly a third of the population were internet users at the start of 2025, against an African average far above that, and the national average mobile download speed was in single-digit megabits per second as recently as 2023. Coverage itself is better than the speed figure suggests — 4G reached around 84 % of the population by 2023 — but capacity is thin and it shows at peak times.

Challenges with Traditional Options:

🏝️ Limited SIM Card Availability

SIM cards are not readily available at the airport. You'll need to find a telecom shop in Moroni, which can be challenging if you don't speak French or Comorian.

Operator shops keep local business hours, and the arrivals hall at Hahaya is small. Landing in the evening realistically means waiting until the following day.

💸 Tourist Pricing Unknown

The Comoros runs largely on cash. Cards are accepted in very few places, ATMs are concentrated in Moroni and Mutsamudu, and you will be quoting prices in Comorian francs. Knowing the peg helps: 491.96775 KMF is exactly €1, so a 5,000 KMF top-up is almost exactly €10.

⛴️ Ferry Schedule Chaos

Inter-island ferry schedules are irregular and change frequently. Without connectivity upon arrival, confirming ferry times for island hopping becomes a major challenge.

Inter-island boats and the small domestic aircraft that serve Anjouan and Mohéli both run to schedules that change with the weather. Plan for that, not around it.

🏨 Resort WiFi Unreliable

Many beach resorts have slow or intermittent WiFi. Some charge extra fees for internet access. Remote islands like Mohéli have particularly limited infrastructure.

✅ eSIM Solution for Island Travel

📱 Before You Leave Home

  • Buy and install eSIM before your flight
  • Know exact pricing - no surprises
  • Save inter-island boat and flight contacts offline before you go
  • Download French/Comorian translation apps

🏝️ Upon Arrival

  • Connected the moment you land in Moroni
  • Book airport transfer via WhatsApp instantly
  • Confirm boat and domestic flight times for island hopping
  • Navigate to hotel without hunting for WiFi

💡 Key Advantage: In a destination this thinly served, the value of an eSIM is not speed — it is arriving already connected instead of losing your first evening to a closed shop. The honest caveat is in the next section: we do not currently have a plan that covers the Comoros, and we would rather tell you that here than sell you something that will not register.

Comoros eSIM Plans & Pricing

Straight answer first

We checked our own catalogue on 12 September 2026 and we do not currently have an eSIM that covers the Union of the Comoros. There is no Comoros country plan; the Comoros is not in the coverage list of our Africa regional packages; and it is not among the countries carried by the Discover Global family. Country code KM returns an empty plan list.

The block below queries our live catalogue every time this page loads, so if that changes it will show real plans and real prices here. Until it does, treat any Comoros price you see quoted anywhere — including older versions of this page — as unreliable.

💰 Loading Current Comoros eSIM Prices...

eSIM Setup for Comoros

Pro Tip: Install Before Your Flight

Whatever eSIM you end up using, install the profile at home on Wi-Fi. Downloading an eSIM profile needs a working data connection, which is exactly what you will not have standing in the arrivals hall at Prince Said Ibrahim International (Hahaya, HAH, about 20 km north of Moroni).

Simple 3-Step Installation

1

Confirm Coverage, Then Buy

Check that the plan you are buying actually lists the Comoros — a great many regional and global packages do not. Ours currently do not either, and we say so above.

2

Scan QR Code

Settings → Cellular/Mobile → Add eSIM → Scan QR code. Works on iPhone (XS+), Samsung, Google Pixel, and most modern phones. Install while on home WiFi.

3

Activate Upon Arrival

Turn on data roaming for the eSIM line. The phone registers on Comores Télécom (Huri) or Yas Comores — those are the only two networks in the country.

Common eSIM Issues & Quick Fixes (2026 Reports)

"Stuck on Activating..." (iPhone Users)

eSIM stuck in endless "Activating..." loop - Apple Community Forum 2025

Fix: Turn OFF VPN before installing eSIM. Toggle Airplane mode ON (wait 30 sec) then OFF. Wait 2-3 minutes. If still stuck after 10 min, restart phone.

"No Service" After Landing (Most Common Issue)

This is the #1 most common eSIM activation issue globally

Fix: Go to Settings → Cellular → Your eSIM → Turn ON "Data Roaming" (required). Wait 30-60 seconds. If nothing happens, open network selection manually and look for Comores Télécom or Yas.

Weak Signal Outside Moroni

Coverage in the Comoros is concentrated in the towns; the interior of Grande Comore and the mountainous parts of Anjouan are thinly served

This is expected: Moroni, Mutsamudu and Fomboni have 4G. Away from them expect 3G or nothing. Download offline maps before boat crossings and volcano treks.

Samsung Galaxy S25 Extended Activation

New Samsung device specific issue - Reddit reports 2025

Fix: Samsung S25 users: eSIM may take 5-10 minutes to activate (normal!). Keep data roaming ON. If no connection after 15 minutes, restart phone.

Still Having Issues? Contact our 24/7 WhatsApp support. Most activation problems resolve within 5 minutes with our help!

What Connectivity in the Comoros Actually Costs

We are not going to put an invented savings figure here, because we do not currently sell a Comoros plan to compare against. What we can do is tell you honestly how the options are priced, and what to check before you assume you are covered.

⚠️ The first thing to check: is the Comoros even on your carrier's list?

Flat-rate travel add-ons are sold as “200+ destinations”, and the Comoros is one of the countries that routinely falls outside them. AT&T's International Day Pass, for example, is $12 per day across its published destination list — but the list is the part that matters, and you need to look the Comoros up on it rather than assume. If your destination is not on the list, you are not on the day rate; you drop to pay-per-use, which is metered per megabyte.

🇪🇺 From Spain or the EU

“Roam like at home” does not reach here. The EU roaming area covers the 27 member states plus Iceland, Liechtenstein and Norway — the Comoros is outside it, so a Spanish or other EU line bills the Comoros as international roaming. Spanish operators publish rest-of-world data rates in euros per megabyte: Movistar quotes 12.10 €/MB outside its bundled zones and Vodafone España's out-of-zone bands run from roughly 6.05 to 18.15 €/MB. At those rates a single map load is a meaningful amount of money. Check which zone your operator puts the Comoros in before you leave, and if in doubt keep data roaming off.

🏪 A local SIM in Moroni

Cheap once you have it — this is a market where two operators compete hard on data price — but it costs you time and cash. Shops are in town rather than at the airport, they keep local hours, and you will need cash in Comorian francs and your passport. Perfectly reasonable if you are staying a while; poor value for a three-day stop.

📱 A travel eSIM

The right answer in most countries, and the honest answer here is that we cannot currently be that answer for the Comoros. Our catalogue returns nothing for KM. If you find a provider that does cover it, verify the listed network is one of the two that exist — Comores Télécom (Huri) or Yas Comores — before you pay.

One cheap habit that beats every plan here: download offline maps of Grande Comore, Anjouan and Mohéli, plus an offline French dictionary, before you fly. A large share of a Comoros itinerary — the Karthala ascent, boat crossings, most beaches — has no usable signal at any price.

How Much Data Do You Really Need?

🏖️ Light User (3-5GB / week)

Beach relaxation, occasional photo sharing, basic navigation

  • • WhatsApp messaging: ~50MB/day
  • • Google Maps: ~100MB/day
  • • Instagram browsing: ~200MB/day
  • • Total: ~350MB/day = 2.5GB/week

Recommendation: a 3-5 GB plan over 7 days

📱 Moderate User (8-12GB / week)

Island hopping, ferry bookings, frequent photo posting

  • • Navigation & ferry research: ~200MB/day
  • • Social media posting: ~400MB/day
  • • Video calls home: ~300MB/call
  • • Total: ~800MB/day = 5.6GB/week

Recommendation: a 5-10 GB plan over 15 days

🎥 Heavy User (15-20GB / week)

Content creation, work calls, extensive island documentation. Be realistic: with a national average mobile download speed in single-digit Mbps, the constraint on a 4K upload here is throughput, not your data allowance.

  • • 4K video uploads: ~2GB/5 minutes
  • • Zoom work calls: ~500MB/hour
  • • Cloud photo backups: ~1GB/200 photos
  • • Total: ~2-3GB/day = 14-21GB/week

Recommendation: 20 GB or more over 30 days — but see the speed note below

⚠️ Data-Saving Tips for Islands

  • • Download offline maps for all three islands before you arrive, not once you get there
  • • Use hotel/resort WiFi for large uploads when available
  • • Disable auto-play videos on social media apps
  • • Download entertainment before boat crossings — there is no coverage out on the Mozambique Channel
  • • Turn off automatic app updates on mobile data

Common eSIM Issues & Solutions (Verified by Travelers)

These are the eSIM failure modes that are generic to any destination, plus what is specific to the Comoros. Nothing below is attributed to a named traveller, because we did not find Comoros-specific first-hand reports we could stand behind.

❌ "No Service" at Moroni Airport

Common Issue:

eSIM shows "No Service" after landing at Prince Said Ibrahim International

Solution:

  1. 1. Go to Settings → Cellular → Your eSIM line
  2. 2. Turn ON "Data Roaming" (Comoros requires this!)
  3. 3. Toggle Airplane mode ON (30 sec) then OFF
  4. 4. Wait 30-60 seconds, then if nothing appears select the network manually — the only two you will see are Comores Télécom (Huri) and Yas
⚠️ No Signal Between Islands / On Ferries

Common question:

Signal disappears on the boat to Mohéli — is the eSIM broken?

This is Expected (Not a Bug!):

No. Terrestrial cell sites reach a few tens of kilometres offshore at best, and the crossings between Grande Comore, Anjouan and Mohéli are far longer than that. Signal drops shortly after you leave port and comes back as you approach the next island. What to do: save schedules, offline maps and something to read before boarding. The eSIM re-registers on its own when you arrive.

📶 Slow Speeds in Remote Areas

Issue:

Data is slow outside Moroni or main towns

What to Know:

This is a national characteristic, not a fault with your line. The average mobile download speed across the Comoros was around 9 Mbps in 2023 — up from roughly 2 Mbps a decade earlier, but still thin. Expect usable 4G in Moroni, Mutsamudu and Fomboni, 3G or worse elsewhere, and noticeably slower evenings. Mohéli is the worst of the three islands and the reason is structural: it has no submarine fibre and runs on microwave backhaul.

🌋 No Signal on Mount Karthala Volcano

Expected Behavior:

"Lost signal halfway up Mount Karthala trek?"

This is Normal:

Karthala rises to 2,361 m and is one of the most active volcanoes in the world. The villages on its flanks are served; the ascent and the caldera are not, and you should plan the trek on the assumption that you will be out of contact for its duration. Before you go: download offline maps and GPS tracks, leave your route with someone, and go with a local guide. The eSIM re-registers on the way back down.

Practical Summary

  • ✓ Moroni, Mutsamudu and Fomboni have workable 4G
  • ✓ 5G exists in central Moroni since May 2025
  • ✓ Upload photos from town, not from the field
  • ✓ Install any eSIM profile before you fly
  • ✓ Data roaming must be ON
  • ✓ Sea crossings and Karthala have no signal
  • ✓ Download offline maps for all three islands
  • ✓ Only two networks exist: Huri and Yas

Network Coverage Details

Two operators, one regulator

The Comorian market is a duopoly. Comores Télécom, trading as Huri, is the state-owned incumbent that held a monopoly until 2016; it uses MCC-MNC 654-01. Yas Comores — licensed in 2015 by the regulator ANRTIC, launched as Telma Comores in 2016 and rebranded to Yas across the Axian group in November 2024 — uses 654-02. As of 2023 the split was roughly 53 % Yas to 47 % Comores Télécom. Between them they had 4G reaching about 84 % of the population.

On 15 May 2025 ANRTIC authorised both operators to launch 5G. Deployment started in central Moroni, spread across the capital through July 2025, and then moved on to Mutsamudu and Fomboni. It is a genuine launch but a small footprint — do not plan a trip around it.

Backhaul is the reason the three islands differ. Moroni lands the international EASSy and FLY-LION3 submarine cables; the domestic AVASSA cable, completed in 2016, links Grande Comore to Anjouan. Mohéli has no fibre of its own and depends on microwave radio links, which is why it is consistently the slowest of the three.

🟢 Best Coverage

  • • Moroni and its suburbs
  • • Mutsamudu (Anjouan)
  • • Fomboni (Mohéli)
  • • Prince Said Ibrahim airport (Hahaya)
  • • The main coastal roads near towns

🟡 Patchy — often 3G

  • • Villages away from the coast road
  • • Ylang-ylang and clove growing areas
  • • Mohéli outside Fomboni
  • • Lower slopes of Karthala
  • • Anjouan's interior valleys

🔴 Assume Nothing

  • • The Karthala ascent and caldera
  • • Boat crossings between islands
  • • Mohéli Marine Park dive sites
  • • Remote hiking routes
  • • Anything above the tree line

📶 What to Expect

Speed, realistically:

  • • National average download: about 9 Mbps (2023)
  • • Up from roughly 2 Mbps in the mid-2010s
  • • 5G in central Moroni only, since May 2025
  • • Mohéli lags on microwave backhaul

Practical habits:

  • • Do big uploads from Moroni, overnight
  • • Expect congestion in the evening
  • • Keep offline maps for all three islands
  • • Carry a power bank — outages are common

Data Budgets by Trip Type

📊 Data Budgets by Trip Type

These are modelled allowances, not traveller reports. They are built from published per-app data rates and from the Comoros facts verified elsewhere on this page: 4G in Moroni, Mutsamudu and Fomboni, a national average mobile download of about 9 Mbps in 2023, no coverage at sea or on Karthala, and thinner backhaul on Mohéli. No prices are quoted, because we do not currently sell a plan that covers the Comoros.

Beach and capital

Moroni base, short stay

7 days≈3 GB modelled

Route

Moroni → the coast just north of the capital

📊 Modelled Day-by-Day Usage

Day 1~300 MB

Arrival at Hahaya, transfer, messages home

Days 2-4~500 MB/day

Coast and beach days; some photo uploads from the hotel

Days 5-6~400 MB/day

Moroni medina and market, translation, navigation

Day 7~300 MB

Last uploads and departure

💡 What This Profile Should Plan For

  • ✓This is the profile least affected by Comorian network limits — you stay inside the one area with real coverage throughout
  • ✓Do photo uploads from Moroni rather than from the beach; the capital is where the submarine cables land
  • ✓Carry an offline French dictionary: French is a working language here and English is not widely spoken
  • ✓Cash in Comorian francs matters more than data. 491.96775 KMF is exactly €1

📦 Plan Shape

3-5 GB over 7 days is ample

📵 Expected Offline Time

Minimal — perhaps a boat trip

🧭 Bottom line

The one Comoros itinerary where you can reasonably expect to be connected most of the time.

Volcano and landscape photography

Grande Comore plus a hop to Anjouan

10 days≈8 GB modelled

Route

Moroni → Mount Karthala → Mutsamudu

📊 Modelled Day-by-Day Usage

Days 1-2~500 MB/day

Moroni: weather, logistics, arranging a guide

Days 3-5≈0

Karthala ascent and caldera — assume no signal for the duration

Days 6-7~2 GB/day

Back in Moroni: backing up a trek's worth of RAW files

Days 8-10~800 MB/day

Anjouan: Mutsamudu base, coastal and interior shooting

💡 What This Profile Should Plan For

  • ✓Karthala is one of the most active volcanoes on earth and its ascent is offline time — download maps and GPS tracks, leave your route with someone, go with a local guide
  • ✓Cloud backup is throughput-limited, not allowance-limited: at the national average of around 9 Mbps a large RAW set takes hours
  • ✓Start big uploads overnight from Moroni; evenings are the congested part of the day
  • ✓Anjouan's interior valleys shadow the coastal sites, so plan on losing signal when you head inland

📦 Plan Shape

Around 10 GB over 15 days, if a plan is available

📵 Expected Offline Time

Two to three full days on the mountain

🧭 Bottom line

The data budget is modest; the real constraint is upload speed and the long offline stretch on Karthala.

All three islands

Island hopping, two travellers sharing a hotspot

14 days≈10 GB modelled, combined

Route

Grande Comore → Mohéli → Anjouan

📊 Modelled Day-by-Day Usage

Days 1-4~600 MB/day

Grande Comore: Moroni, coast, logistics for the onward hops

Days 5-9~400 MB/day — thin backhaul, slow uploads

Mohéli: Fomboni base, marine park, turtle beaches

Days 10-14~700 MB/day

Anjouan: Mutsamudu, coast road, interior

Crossings≈0 — no coverage offshore

Boat or small aircraft between islands

💡 What This Profile Should Plan For

  • ✓There is no bridge and no road: every island change is a small plane or a boat, both weather-dependent and both liable to change at short notice
  • ✓Never book a same-day connection from an inter-island hop onto an international flight
  • ✓Mohéli is the slowest island for a structural reason — it is not on the AVASSA submarine cable and runs on microwave links
  • ✓Download offline maps for all three islands before you leave home, not island by island as you go
  • ✓ATMs are concentrated in Moroni and Mutsamudu; carry cash before you go to Mohéli

📦 Plan Shape

10 GB or so over 30 days, shared as a hotspot

📵 Expected Offline Time

Substantial — every crossing, plus most of Mohéli's coastline

🧭 Bottom line

The itinerary that most rewards offline preparation, because connectivity is least reliable exactly when plans change.

Remote-resort stay

One island, one place, minimal movement

10 days≈4 GB modelled

Route

A single base on Mohéli or the Grande Comore coast

📊 Modelled Day-by-Day Usage

Days 1-2~400 MB/day

Arrival, settling in, messages home

Days 3-8~350 MB/day

Snorkelling, beach, occasional calls home

Days 9-10~800 MB/day

Uploading the trip's photos before departure

💡 What This Profile Should Plan For

  • ✓Property Wi-Fi outside the towns is typically the same mobile network you would be using anyway, resold — expect it to behave the same way
  • ✓Video calls work better in the morning than in the evening
  • ✓If the property is on Mohéli, set expectations low: the island has no fibre link of its own
  • ✓Save the bulk upload for a stop in Moroni on the way out

📦 Plan Shape

5 GB over the stay

📵 Expected Offline Time

Moderate, and mostly by choice

🧭 Bottom line

Low data need. The question is not how many gigabytes but whether there is signal at the property at all — ask before booking.

Work travel

Meetings in Moroni plus field visits

15 days≈18 GB modelled

Route

Moroni → Anjouan → rural Grande Comore

📊 Modelled Day-by-Day Usage

Days 1-3~1.2 GB/day

Moroni: meetings, email, video calls to head office

Days 4-8~1 GB/day

Anjouan: site visits, photo documentation, reports uploaded from Mutsamudu

Days 9-12~800 MB/day

Rural Grande Comore: patchy signal, work queued for the evening

Days 13-15~1.5 GB/day

Moroni: final large uploads and wrap-up

💡 What This Profile Should Plan For

  • ✓Download every document you might need before leaving Moroni; rural signal is not a reliable base for a working day
  • ✓Video calls are the single biggest line item, at roughly 500 MB per hour
  • ✓Schedule anything large for a town, and preferably outside the evening peak
  • ✓Power cuts are common — a power bank matters as much as the data plan

📦 Plan Shape

20 GB over 30 days

📵 Expected Offline Time

Several working days in the field

🧭 Bottom line

The heaviest realistic profile, and the one where the ~9 Mbps national average bites hardest.

Long, slow, low-budget

Three weeks across all three islands

21 days≈12 GB modelled

Route

Grande Comore → Mohéli → Anjouan, guesthouses throughout

📊 Modelled Day-by-Day Usage

Week 1~600 MB/day

Grande Comore: finding places to stay, walking, local transport

Week 2~400 MB/day

Mohéli: slow island, slower network, mostly offline

Week 3~700 MB/day

Anjouan: markets, coast road, writing up and uploading

💡 What This Profile Should Plan For

  • ✓Over three weeks a local SIM starts to make sense — two operators compete and local data is cheap once you have the SIM, a passport and cash
  • ✓Accommodation here is largely offline: expect to arrange places in person or by phone rather than through booking sites
  • ✓Offline translation is worth more than any amount of data — French plus Comorian is the everyday reality
  • ✓Build slack into every island change; the schedule you are given is an intention, not a commitment

📦 Plan Shape

A local SIM, or 10 GB+ over 30 days

📵 Expected Offline Time

A lot, and it is part of the appeal

🧭 Bottom line

The longer you stay, the more a Comorian SIM beats any travel plan — including the ones we do not currently sell.

📱 Quick Data Recommendations

Sized for the Comoros specifically: much of a typical itinerary has no usable signal, so allowances here are lower than you would budget for a mainland destination of the same length.

Weekend/Beach Escape (3-7 days)

3-5GB

Beach photos, navigation, staying in touch

Moroni-based itinerary

Island Hopping (10-14 days)

10-20GB

Navigation, bookings, content creation

All three islands, hotspot shared

Extended/Work Trip (2+ weeks)

20GB+

Video calls, work uploads, heavy use

Work travel with field visits

📲 Typical App Data Usage in Comoros

Essential Apps:
Google Maps (navigation)~150MB/day
WhatsApp (messaging + calls)~50MB/day
Google Translate (text/voice)~20MB/day
Email checking~30MB/day
Weather apps~10MB/day
Heavy Usage:
Instagram (posting photos)~200MB/day
Video calls (FaceTime/Zoom)~500MB/hour
YouTube/Netflix streaming~1GB/hour
4K video uploads~2GB/5min
Cloud photo backup~100MB/100 photos

💡 Pro Tip: Use hotel/resort WiFi for heavy uploads when available. Save your mobile data for navigation, communication, and posting photos during day trips.

Island Connectivity Guide for Comoros

Grande Comore (Ngazidja)

Excellent 4G

Largest island with capital Moroni and Mount Karthala volcano. Best connectivity of all three islands. Perfect base for coordinating island hopping trips.

Why it is the best-served island:

Moroni is where the international submarine cables land — EASSy since 2010-11 and FLY-LION3 since 2019 — and it is the first place either operator lights up new technology. 5G started here in May 2025.

Connectivity:

  • • Moroni: 4G, plus 5G in the centre
  • • Coastal resorts near Moroni: 4G
  • • Karthala flanks: patchy, often 3G
  • • Caldera: assume no signal

eSIM Usage Tips:

  • • Arrange the Karthala trek and guide in Moroni
  • • Download offline maps and GPS tracks first
  • • Do your uploads from town
  • • Keep boat and flight contacts saved offline

Mohéli (Mwali)

Good in Town

Smallest and most remote island. Famous for Mohéli Marine Park, turtle nesting, and pristine diving. Coverage concentrated in Fomboni - plan accordingly for remote areas.

The structural reason Mohéli is slower:

Grande Comore and Anjouan are joined by the AVASSA submarine cable completed in 2016. Mohéli is not on it — it is served by microwave radio links, with a domestic cable system still only planned. No phone setting changes that.

Connectivity:

  • • Fomboni: 4G, but on thin backhaul
  • • Elsewhere on the island: patchy
  • • Marine Park dive sites: no signal
  • • Remote beaches: assume none

Planning Tips:

  • • Arrange dives and turtle-watching from Fomboni
  • • Download marine park information offline
  • • Expect slower speeds than Grande Comore
  • • Upload once you are back in town

Anjouan (Nzwani)

Excellent in Port

Steep, green and the heart of the country's ylang-ylang and clove production. The terrain, not the network, is what breaks coverage here: Mutsamudu is fine, the interior is not.

Where Anjouan sits:

Anjouan is on the AVASSA domestic cable to Grande Comore, so Mutsamudu is well placed for backhaul. The limiting factor is terrain — the island is steep and the interior valleys shadow the coastal sites.

Coverage:

  • • Mutsamudu: 4G, on the AVASSA cable
  • • Coastal villages: generally workable
  • • Interior valleys: limited by terrain
  • • Waterfalls and high ground: none

Tips:

  • • Do anything data-hungry in Mutsamudu
  • • Download hiking maps before heading inland
  • • Carry an offline French dictionary
  • • Expect signal to come and go on the coast road

Mount Karthala (Volcano)

2,361 m and one of the most active volcanoes on earth — it has erupted repeatedly in living memory. The villages on its flanks are served; the ascent and the caldera are not. Go with a local guide, leave your route with someone, and carry water for a long day.

Coverage: treat the whole climb as offline. Download maps and GPS tracks first.

Itsandra Beach

The beach area just north of Moroni, close enough to the capital to sit inside its network footprint. This is the practical place to do your uploads if you are staying near the city.

Connectivity: both operators serve the Moroni conurbation; expect 4G.

Ylang-Ylang Plantations

Ylang-ylang is distilled here for the French perfume industry and is one of the country's few exports. Distilleries near the coast road are generally in coverage; plantations up the hillsides are not.

Expect: coverage to fade as you climb away from the coast.

Moroni (Island Hub)

The capital, and the only place in the country with real depth of infrastructure: the port, the banks and ATMs, the operator shops, and the landing point for the international submarine cables. Its airport, Prince Said Ibrahim International, is at Hahaya about 20 km to the north.

Connectivity: the best in the country, and the only place with 5G so far.

🚢 Moving Between the Islands

Reality: there is no bridge and no road between the islands. You go by small aircraft or by boat, and both are weather-dependent, both change at short notice, and neither has coverage in the middle of the Mozambique Channel — cell sites simply do not reach that far offshore. Signal drops soon after you leave port and comes back as you approach the next island. Give yourself slack, and never book a same-day connection onto an international flight.

Booking: arrange boats and domestic flights in town, in person or by phone
Navigation: Download offline maps for each island
Accommodation: settle it before you leave port, not on arrival
Photo Sharing: Upload island photos when you arrive
Cash: ATMs are scarce outside Moroni and Mutsamudu — carry KMF
Weather: check sea conditions before committing to a crossing

Frequently Asked Questions

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