Savings Calculator
Comoros eSIM Savings Calculator: Roaming vs eSIM (2026)
AT&T charges $10/day in Comoros. Verizon charges the same. Over 10 days, that bill reaches $100. A travel eSIM on Telma Comoros's 3G network costs $4.50 — 96% less. Here is the full breakdown.
Your carrier's roaming rate in Comoros
| Carrier | Plan | Daily Rate | 7-Day Cost |
|---|---|---|---|
| Vodafone | Roaming Passport | £6/day | £42 |
| EE | Roam Abroad | £6/day | £42 |
| AT&T | International Day Pass | $10/day | $70 |
| Verizon | TravelPass | $10/day | $70 |
Vodafone Roaming Passport
Vodafone routes through Telma Comoros towers in Comoros at £6/day — the same network an eSIM reaches from $0.90/GB.
EE Roam Abroad
EE pays Telma Comoros for roaming access in Comoros and bills you £6/day. A travel eSIM connects to Telma Comoros directly at $0.90/GB — same towers, no markup.
AT&T International Day Pass
Telma Comoros operates the 3G towers in Comoros. AT&T resells access at $10/day. An eSIM accesses Telma Comoros directly from $0.90/GB.
Verizon TravelPass
Verizon's day pass in Comoros activates the moment your phone connects to Telma Comoros's network abroad — including the two minutes of background data sync when you land. A full $10 charge runs whether you use 10MB or 10GB that day.
eSIM alternative cost for Comoros
Plan tiers for Comoros
| Tier | Price | Per GB |
|---|
Which provider covers Comoros
The primary provider for Comoros is Holafly, connecting to Telma Comoros's 3G network. Compare all eSIM providers
Savings breakdown
| Trip Length | AT&T | Verizon | T-Mobile HS | eSIM | You Save |
|---|---|---|---|---|---|
| 3 days | $30 | $30 | $45 | $4.50 | $25.50 (85%) |
| 7 days | $70 | $70 | $105 | $9.90 | $60.10 (86%) |
| 14 days | $140 | $140 | $210 | $18.90 | $121.10 (87%) |
| 21 days | $210 | $210 | $315 | $28.80 | $181.20 (86%) |
| 30 days | $300 | $300 | $450 | $40.50 | $259.50 (87%) |
Family and group savings
Carrier roaming charges multiply per person. eSIM savings multiply even faster for groups.
Solo traveler
Carrier: $100
eSIM: $4.50
Save $95.50
Couple
Carrier: $200
eSIM: $9
Save $191
Family of 4
Carrier: $400
eSIM: $18
Save $382
Trip length calculator
How much data you need
Maps & navigation
50 MB/hr
Social media
80 MB/hr
Video calls
250 MB/hr
Photo uploads
10 MB/photo
Music streaming
70 MB/hr
Web browsing
60 MB/hr
WiFi availability in Comoros
WiFi in Comoros is rated limited. WiFi mostly limited to upscale hotels in Moroni
Real savings scenarios for Comoros
Solo traveler
A solo traveler on AT&T International Day Pass in Comoros for 10 days: $10/day x 10 days = $100. A 15GB eSIM on Telma Comoros costs $13.50 for the same 10 days. Savings: $86.50 (87%). Both options connect to Telma Comoros's 3G towers. The arithmetic is simple: one fixed payment versus 10 daily charges.
Family trip
A family that takes two international trips per year saves $692 annually by switching from AT&T roaming to eSIMs. Per trip: AT&T bills $400 (4 lines x $10/day x 10 days). Four eSIMs cost $54 per trip. Over five years, the cumulative savings reach $3460.
Business trip
Corporate travel budget impact for Comoros: a frequent traveler making 4 trips per year saves $153.20 annually by switching from AT&T to eSIM. A team of five making the same trips saves $766 per year. Per trip: AT&T $50 vs eSIM $11.70 per person for 5 days. Both connect to Telma Comoros. The savings scale linearly with headcount and trip frequency.
Long-stay and digital nomads
For long stays in Comoros, the savings compound daily. AT&T at $10/day reaches $300 at 30 days. Two eSIM plan purchases cover the same period at roughly $81. The eSIM costs less than one week of AT&T roaming for a full month of data.
Frequent traveler annual savings
A road warrior making 6 trips to Comoros per year: AT&T: 6 x $100 = $600/year. eSIM: 6 x $13.50 = $81/year. Annual savings: $519 (87%). That savings figure grows every year carriers maintain their current rates.
Extended stay economics
Snowbirds and seasonal travelers spending 60-90 days in Comoros: AT&T at $10/day for 60 days costs $600. For 90 days: $900. Two consecutive 30-day eSIM plans on Telma Comoros: $108 for 60 days. Three plans for 90 days: $162. Savings over 90 days vs AT&T: $738.
Frequent flyer savings
A traveler who visits Comoros twice a year on AT&T International Day Pass: 2 trips x 10 days x $10/day = $200/year in roaming charges. Two 15GB eSIMs on Telma Comoros: $27/year. Annual savings: $173. Over five years, that compounds to $865 in avoided roaming fees.
Data usage savings
T-Mobile's free 256 Kbps tier in Comoros transfers 0.11 GB/hour at maximum throughput. A traveler needing 1.5 GB/day would require 14 hours of continuous transfer — more than the waking day. T-Mobile high-speed add-on at $15/day provides full 3G but costs $150 for 10 days. An eSIM on Telma Comoros at $0.90/GB delivers the same speed for $13.50.
Couples trip savings
The lowest-cost option for couples in Comoros: one 15GB eSIM at $13.50, shared via hotspot. The second phone connects through the first phone's WiFi hotspot. Total cost: $13.50 for both devices over 10 days. Compare: AT&T charges $200 for two lines ($10/day each). Savings: $186.50. Trade-off: the second phone needs to stay within WiFi hotspot range of the first.
UK carrier comparison
EE Roam Abroad in Comoros: GBP6/day for 10 days = GBP60. A 15GB eSIM: $13.50. EE's rest-of-world rate applies to non-EU destinations including Comoros. The eSIM saves approximately $46.50 on the same Telma Comoros network.
Our verdict
The savings math for Comoros is clear. Solo: $86.50 saved vs AT&T for 10 days. Family of four: $346 saved. Annual (2 trips): $173 saved. All figures use the same Telma Comoros 3G network. The eSIM costs less at every trip length and every group size.
How much can I save with eSIM in Comoros?
You save $9 per day by switching from AT&T roaming to eSIM in Comoros. An eSIM averages $1/day on Telma Comoros. AT&T charges $10/day. Over a 10-day trip, the total savings are $90.01. Rates verified June 2026.
How much does roaming cost in Comoros?
AT&T roaming in Comoros costs $10 for each calendar day your phone connects to Telma Comoros's network. The charge triggers on background data sync at landing, not intentional use. A 10-day trip costs $100. An eSIM: $9.99 flat. Verified June 2026.
Comoros network context
Local networks
Comoros has 2 mobile networks. The primary carriers are Telma Comoros, HURI.
Speed and coverage
Comoros currently operates on 3G. Both carrier roaming and eSIM connect to the same local infrastructure.
Connectivity notes
- Archipelago of three islands with varying coverage
- French-style power outlets
Quick tip
Comoros requires passport-based SIM registration for physical SIMs. A travel eSIM bypasses this requirement entirely — no paperwork, no waiting.
Quick tip
Local prices in Comoros are in Comorian Franc (KMF) (CF). eSIM plans are priced in USD, eliminating exchange rate uncertainty.
Frequently asked questions
- How much does AT&T roaming cost for 10 days in Comoros?
- AT&T International Day Pass charges $10/day in Comoros. A 10-day trip costs $100 in roaming charges. This activates automatically when your phone connects to a local network abroad.
- Is a travel eSIM cheaper than Verizon TravelPass in Comoros?
- Verizon TravelPass charges $10/day in Comoros. A 10-day trip costs $100. A 5GB eSIM covers the same trip for $4.50 on the same local network — saving you 96%.
- How much data do I need for a week in Comoros?
- Most travelers use 1-2 GB per day for maps, messaging, social media, and light browsing. A 7-day trip needs 7-14 GB. Video calls and streaming push usage to 3+ GB per day. Choose a 10GB or 20GB plan for heavy use.
- Can a family share one eSIM in Comoros?
- One eSIM stays in one phone, but most eSIM plans allow tethering (personal hotspot). A family of 4 can share a single 10-20GB eSIM through one phone's hotspot instead of paying $10/day per person for carrier roaming.
- Does T-Mobile free data work in Comoros?
- T-Mobile Magenta includes free data in Comoros, but speed is capped at 256 Kbps. That is too slow for Google Maps, video calls, or uploading photos. The high-speed add-on costs $15/day.
- How much does a 30-day eSIM cost for Comoros?
- A 30-day eSIM for Comoros depends on data volume. Metered plans (5-20GB) typically range from $8 to $35. Unlimited daily plans run $1-2/day. Both connect to the same local network as carrier roaming at a fraction of the cost.
- Do UK carriers charge for roaming in Comoros?
- Vodafone and EE charge £6/day for roaming in Comoros outside their EU free-roaming zone. A travel eSIM on the same local network costs a fraction of that weekly rate.
- How much does carrier roaming cost in Comoros?
- AT&T: $10/day ($70/week). Verizon: $10/day ($70/week). T-Mobile: free but throttled to 256 Kbps; high-speed add-on costs $15/day. Travel eSIM on Telma Comoros: $0.90/GB. All four options route through the same Telma Comoros towers in Comoros. The price gap between carrier roaming and eSIM is $70 versus the eSIM rate for a 7-day trip.
- Is T-Mobile's free international data fast enough in Comoros?
- No. T-Mobile's free tier in Comoros runs at 256 Kbps — too slow for GPS navigation, video calls, or any app that loads images. You can send basic text messages and that is about it. The high-speed upgrade costs $15/day, matching AT&T's roaming fee. A travel eSIM on Telma Comoros provides full 3G speeds at $0.90/GB with no daily activation triggers.
- How is my roaming bill calculated in Comoros?
- Relying on hotel WiFi does not prevent roaming charges in Comoros. AT&T's per-day charge fires from any background cellular contact — your phone does not need an active app, just a brief tower handshake. Per-MB billing at $2.05/MB is even more dangerous with background syncs. T-Mobile's 256 Kbps free tier sidesteps per-day billing but is too slow for apps. A travel eSIM at $0.90/GB gives you full 3G and locks the total cost before you board.
- Does my phone automatically connect to roaming in Comoros?
- Yes, if data roaming is enabled. Your phone latches onto Telma Comoros or another Comoros carrier the moment the plane lands and your carrier bills at roaming rates — $10/day with a plan, or $2.05/MB without one. Disable data roaming on your home SIM before boarding. A pre-installed travel eSIM can be set to activate on arrival without triggering home carrier charges.
- How much data does Google Maps use in Comoros?
- Google Maps uses 5-10 MB per hour of active navigation in Comoros. On AT&T pay-per-use that costs $10-20 per hour of driving. On a roaming day pass at $10/day, maps are covered but you pay the daily fee regardless. On a travel eSIM at $0.90/GB on Telma Comoros, a full 8-hour day of navigation costs under $0.10. Download offline maps before departure to cut data usage by 90%.