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Comoros · 2networks · Updated May 2026

Comoros Data Roaming Costs: 2026 Carrier Price Breakdown

2 carriers compared · Updated May 2026 · By Roaming Experts

$80+
You save
per 7-day trip to Comoros
AT&T $84.00 · eSIM $4.50

Short Answer:

AT&T charges $12/day for roaming in Comoros. A 7-day trip costs $84.00 in carrier fees.Holafly covers that same week for $4.50 total1GB+ on local networks. You save $79.50 with Holafly. No contract changes needed. Prices verified May 2026.

The pain

What carriers charge in Comoros

Daily rate, total cost, and what you actually get.

US carrier roaming costs in Comoros, verified May 2026
CarrierDaily7-day14-dayDataVerdict
AT&T
Day Pass
$12.00$84.00$168.002GB high-speed/dayExpensive
Verizon
TravelPass
$12.00$84.00$168.005GB high-speed/dayExpensive
T-Mobile
Magenta
$0.00$0.00$0.00Unlimited at 2G (128kbps)Free but slow
T-Mobile
International Pass
$10.00$70.00$140.002GB high-speed/dayCostly

Prices verified May 28, 2026. Updated weekly from provider websites.

The relief

The eSIM alternative for Comoros

Verified providers. Same data, fraction of the cost.

Holafly is our top pick for Comoros — Unlimited daily data plans.

Winner
Holafly logo
Holafly
Comoros · 1GB+ · 7 days
$4.50
$0.64 / day
  • Instant QR install
  • 5G where available
  • Keep your home number
Get Holafly for $4.50 (opens in new tab)
The math

Savings breakdown for Comoros

Carrier cost vs eSIM for different trip lengths.

eSIM vs carrier roaming savings for Comoros, verified May 2026
Trip LengthAT&T CosteSIM CostYou Save
7 days$84.00$4.50$79.50
14 days$168.00$4.50$163.50
30 days$360.00$4.50$355.50
By carrier

Carrier deep-dives for Comoros

AT&T in Comoros

AT&T charges $12/day via International Day Pass. There is no daily cap on the charge — it applies any day you use data, voice, or SMS.

Activation fee
$0
Data
Unlimited
Networks
Comoros Telecom (Huri), Telma Comoros
Verdict
Expensive

T-Mobile in Comoros

T-Mobile Magenta includes free roaming in Comoros at 2G speeds. Usable for maps and plain text. Painful for photos, video, or any real browsing. Go5G Plus includes 5GB high-speed free. The $10/day International Pass unlocks LTE.

Base speed
128kbps (2G)
Intl Pass
$10/day for LTE
Networks
Comoros Telecom (Huri), Telma Comoros
Verdict
Free but slow

Verizon in Comoros

Verizon TravelPass is $12/day on Comoros Telecom (Huri), Telma Comoros. After 5GB at LTE speed, your connection reduces to 3G. Charged any day you use service in Comoros — even one background app sync. Verizon auto-enrolls TravelPass; opt out in the My Verizon app before you depart.

Speed change at
5GB/day
Auto-enroll
Yes (opt-out)
Networks
Comoros Telecom (Huri), Telma Comoros
Verdict
Expensive
Bill shock

Real roaming bill scenarios in Comoros

What carrier roaming actually costs travelers.

7-day trip with AT&T
$84.00 carrier$4.50 eSIM

AT&T International Day Pass charges $12/day in Comoros. Over 7 days that is $84.00 — even if your phone only syncs email in the background.

7-day trip with Verizon
$84.00 carrier$4.50 eSIM

Verizon TravelPass auto-enrolls your line at $12/day. A 7-day trip costs $84.00, and high-speed data is capped at 5 GB.

7-day trip with T-Mobile upgrade
$70.00 carrier$4.50 eSIM

T-Mobile's free tier is 128 kbps — unusable for maps or video. The $10/day speed upgrade in Comoros adds up to $70.00 over 7 days.

Two-week extended trip (AT&T)
$168.00 carrier$4.50 eSIM

A 14-day trip pushes AT&T Day Pass to $168.00. AT&T caps charges at $120/month (10 days), so the remaining days are included — but you still pay $120 minimum.

Watch out

Roaming traps in Comoros

Hidden charges and gotchas that catch travelers off guard.

high risk
Background app sync

Your phone syncs email, photos, and apps in the background the moment it connects in Comoros. Each sync triggers a full day's roaming charge on AT&T and Verizon.

Enable airplane mode before landing, then activate your eSIM.

high risk
Verizon auto-enrollment

Verizon auto-enrolls TravelPass when your phone connects in Comoros. You must opt out in the My Verizon app before departure.

Disable TravelPass in the My Verizon app before your trip.

medium risk
iMessage SMS fallback

When iMessage cannot reach Apple servers it falls back to SMS. One international SMS can cost $0.50-$1.00 and triggers a roaming day charge.

Turn off Send as SMS in Settings > Messages before departure.

medium risk
Layover data charge

A brief layover or transit stop in Comoros can trigger a full $12 day charge if your phone connects to a local tower.

Keep airplane mode on during layovers unless you need data.

Verdict

eSIM or carrier roaming for Comoros?

The bottom line on cost and speed.

A travel eSIM wins on both cost and speed for Comoros. The cheapest verified plan delivers 1GB+ for $4.50 — that is 95% less than AT&T's $84.00 over 7 days.

You save $79.50 on a single trip. No daily fees, no data caps beyond your plan allowance, no auto-enrollment surprises. Install before departure, activate on landing, done.

Family math

Family roaming costs in Comoros

Per-person charges multiply fast for families.

Family roaming costs for a 7-day trip to Comoros, verified May 2026
CarrierFamily of 2Family of 4eSIM (4)Savings (4)
AT&T Day Pass$168.00$336.00$18.00$318.00
Verizon TravelPass$168.00$336.00$18.00$318.00
T-Mobile Upgrade$140.00$280.00$18.00$262.00
All options

Every way to get online in Comoros

Ranked from cheapest to most expensive.

#1Travel eSIM$4.50 totalBest

Prepaid data on local networks in Comoros. Install before departure, activate on arrival. Full LTE/5G speed.

#2Hotel / cafe Wi-FiFree

Wi-Fi availability varies in Comoros. Not reliable for navigation or ride-hailing on the move.

#3T-Mobile free tierIncluded

128 kbps data — technically free but practically unusable for maps, photos, or video.

#4AT&T International Day Pass$84.00 (7 days)

$12/day on local carriers. Background syncs trigger a full day charge.

#5Verizon TravelPass$84.00 (7 days)

$12/day with 5 GB high-speed cap. Auto-enrolls unless you opt out.

Quick answer

Comoros roaming charges at a glance

Roaming in Comoros costs £2.00 to $12.00 per day on major carriers. A 7-day trip adds $84.00 in roaming fees before you send a single photo.

T-Mobile is the cheapest carrier option for Comoros, including roaming at no extra charge with Unlimited at 2G.

Verizon charges the most at $12.00/day. A 14-day trip costs $168.00 in roaming fees alone.

A travel eSIM for Comoros starts at $4.50 total, covering the entire trip at local network speeds with no daily charges.

How to switch

How to avoid roaming charges in Comoros

  1. 1
    Put your phone in airplane mode before takeoff.
    Prevents auto-enrollment in carrier roaming passes during the flight or on landing.
  2. 2
    Buy a travel eSIM for Comoros ($4.50 typical).
    Travel eSIM providers (Holafly, Airalo, and Saily) sell pre-purchased plans with QR-code activation.
  3. 3
    Install the eSIM and label it.
    Install in airplane mode. Label the line "Comoros — data only." Keep your carrier line for SMS.
  4. 4
    Enable the eSIM line for data after landing.
    Switch default data to the eSIM. Leave your carrier line off for data, on for incoming SMS.
  5. 5
    Back home: switch data back to your carrier.
    The eSIM stays available for your next trip. No re-purchase needed if data remains.
Data tips

Data usage tips for Comoros

Download offline maps before you go
Google Maps and Apple Maps both support offline areas. Download your destination city to avoid burning data on navigation.
Use Wi-Fi for large downloads and video
Hotels, cafes, and airports have Wi-Fi. Save your eSIM data for when you actually need mobile connectivity.
Turn off automatic app updates
iOS and Android both update apps in the background. Disable auto-updates over cellular to keep data usage predictable.
Compress photos before uploading
Social media apps upload full-resolution photos by default. Switch to lower quality uploads or wait for Wi-Fi.
Calculate

Your exact savings for Comoros

Pick your carrier, trip length, and data usage.

1Your carrier
2Destination
3Trip length
4Data usage
You save
$74.60
on a 7-day trip to Japan
AT&T · 7d
$84.00
Best eSIM · moderate usage
$9.40
FAQ

Common Comoros roaming questions

How much does AT&T International Day Pass cost in Comoros?

AT&T International Day Pass costs $12 per day in Comoros. A 7-day trip costs $84.00 in roaming fees. The pass includes 2GB of high-speed data per 24-hour period, then speeds drop to 128 kbps. The charge triggers any day your phone connects to a network, including background syncs.

How much does T-Mobile International Pass cost for Comoros?

T-Mobile International Pass costs $10/day in Comoros. A 7-day trip costs $70.00. A 14-day trip costs $140.00. T-Mobile raised this price from $5/day to $10/day in 2026. The pass includes 2GB of high-speed data per day, then speeds drop to 256 kbps. A travel eSIM for Comoros costs $4.50 for an entire week.

Is Verizon's Monthly International Plan better for long trips to Comoros?

Verizon's Monthly International Plan costs $100/month with 20GB of data. For trips longer than 8 days to Comoros, it costs less than daily TravelPass charges. A 14-day trip on TravelPass costs $168.00 versus $100 on the monthly plan. A travel eSIM for Comoros still costs $4.50 for the same period, making it the cheapest option by a wide margin.

Do I still get free EU roaming with Vodafone UK in Comoros?

Comoros is not in the EU, so EU roaming rules do not apply. Vodafone charges GBP6.85/day via Roam Further for worldwide destinations including Comoros.

Do I need to unlock my phone to use an eSIM in Comoros?

No. eSIMs install alongside your existing carrier SIM without requiring an unlock. Only physical SIM swaps require your phone to be carrier-unlocked. You can add a travel eSIM to any eSIM-compatible phone regardless of your carrier lock status.

Will I still receive calls and texts on my home number in Comoros?

Yes. Keep your carrier SIM active with data disabled. Your home number continues to receive calls and SMS over the cellular network. For making calls, use Wi-Fi calling (free on AT&T, T-Mobile, and Verizon) to avoid per-minute voice roaming charges. The travel eSIM handles all data while your carrier SIM handles voice and SMS.

How fast is the eSIM data connection in Comoros?

A travel eSIM connects to local carriers at full network speed. Most connections run on 4G/LTE. This is the same speed you would get with carrier roaming on AT&T or Verizon, but at a fraction of the cost ($4.50 vs $84/week on AT&T).

How do I monitor my eSIM data usage in Comoros?

On iPhone: Settings > Cellular > scroll down to see data usage per line. Reset statistics before your trip to track trip-specific usage. On Android: Settings > Network > SIMs > select the eSIM > Data usage. Some eSIM provider apps also show real-time data consumption. Your plan includes 1GB+. At typical travel usage of 1-2GB/day, this covers 0-1 days of use.

Should I download offline content before traveling to Comoros?

Yes. Download these before departure: (1) Google Maps or Apple Maps offline areas for your destination cities in Comoros. (2) Spotify or Apple Music playlists for offline listening. (3) Netflix or YouTube Premium content for flights and downtime. (4) Translation app dictionaries for offline translation. (5) Boarding passes and hotel confirmations in PDF format. These downloads save 2-5GB of mobile data over a typical trip.

Is carrier roaming or eSIM better for a weekend trip to Comoros?

For a 3-day weekend trip to Comoros, AT&T costs $36.00 while an eSIM costs $4.50. Even for short trips, the eSIM saves $31.50. T-Mobile's free 128 kbps tier works for basic texting on a short trip but fails for navigation and photos. The eSIM wins on both cost and speed for any trip length.
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