Cost Comparison
Guinea-Bissau Carrier Roaming vs eSIM: Full Cost Breakdown (2026)
AT&T charges $10/day for Guinea-Bissau roaming. Verizon charges $10/day. A travel eSIM on Orange GW's 4G LTE network costs $129.05 for 10 days — -29% less than either carrier. Below is every rate, side by side.
Roaming costs by carrier
Vodafone in Guinea-Bissau
Plan
Roaming Passport
Daily rate
£6/day
7-day cost
£42
14-day cost
£84
Orange GW provides the 4G LTE signal in Guinea-Bissau. Vodafone routes through it at £6/day. An eSIM routes through it at $5.74/GB. The coverage is the same.
EE in Guinea-Bissau
Plan
Roam Abroad
Daily rate
£6/day
7-day cost
£42
14-day cost
£84
A week on EE in Guinea-Bissau costs £42 in roaming (£6/day on Orange GW's towers). An eSIM on the same Orange GW network starts at $5.74/GB.
AT&T in Guinea-Bissau
Plan
International Day Pass
Daily rate
$10/day
7-day cost
$70
14-day cost
$140
AT&T's $10/day pass in Guinea-Bissau draws from your existing home-plan data bucket. Customers on base-tier plans with 5GB/month find they exhaust home data faster when roaming counts against the same pool.
Verizon in Guinea-Bissau
Plan
TravelPass
Daily rate
$10/day
7-day cost
$70
14-day cost
$140
Verizon charges $10 for each calendar day your phone uses data in Guinea-Bissau — not each 24-hour window. Arriving after midnight and leaving before midnight the next day costs two full day-pass charges on the same trip.
eSIM costs by provider
Metered plans (1GB-20GB)
| Tier | Price | Per GB |
|---|---|---|
| 1GB | $7.74 | $7.74 |
| 3GB | $22.49 | $7.50 |
| 5GB | $28.68 | $5.74 |
| 10GB | $68.82 | $6.88 |
| 20GB | $129.05 | $6.45 |
Unlimited daily plans
| Days | Price | Per Day | Discount |
|---|---|---|---|
| 1 days | $14.86 | $14.86 | 4% |
| 3 days | $42.72 | $14.24 | 8% |
| 7 days | $99.69 | $14.24 | 8% |
| 14 days | $192.88 | $13.78 | 11% |
| 30 days | $380.81 | $12.69 | 18% |
Network access
eSIM plans in Guinea-Bissau connect to Orange GW's 4G LTE network — the same towers that carrier roaming uses. Orange GW is the sole operator, so both roaming and eSIM deliver identical coverage.
Side-by-side comparison
7-day trip comparison
| Option | Cost | Data | Speed | Network |
|---|---|---|---|---|
| Vodafone | £42 | Fair-use | LTE | Orange GW |
| EE | £42 | Fair-use | LTE | Orange GW |
| AT&T | $70 | Plan data | LTE | Orange GW |
| Verizon | $70 | Plan data | LTE | Orange GW |
| eSIM (20GB) | $129.05 | 20GB | 4G LTE | Orange GW |
| eSIM (Unlimited) | $108.36 | Unlimited | 4G LTE | Orange GW |
14-day trip comparison
| Option | Cost | Data | Speed | Network |
|---|---|---|---|---|
| Vodafone | £84 | Fair-use | LTE | Orange GW |
| EE | £84 | Fair-use | LTE | Orange GW |
| AT&T | $140 | Plan data | LTE | Orange GW |
| Verizon | $140 | Plan data | LTE | Orange GW |
| eSIM (20GB) | $129.05 | 20GB | 4G LTE | Orange GW |
| eSIM (Unlimited) | $216.72 | Unlimited | 4G LTE | Orange GW |
Per-day rate breakdown
AT&T charges $10/day. A 20GB eSIM spread across 10 days costs $12.91/day — 0.8x cheaper on the same Orange GW 4G LTE network.
Hidden charges
Auto-enrollment and day-one billing
AT&T and Verizon roaming passes activate automatically when your phone connects to Orange GW's network in Guinea-Bissau. Calendar-day billing means arriving at 11:30 PM and leaving before midnight the next day counts as two full day charges. A single background app refresh on landing triggers the first charge.
Speed throttling and data caps
T-Mobile's free international data runs at 256 Kbps — too slow for Google Maps, Instagram, or video calls. Xfinity Mobile caps high-speed data at 200 MB per day before throttling. AT&T and Verizon do not publish their throttling thresholds, but users report speed reductions on sustained high-bandwidth use.
Voicemail and background app charges
Checking voicemail abroad is treated as an inbound international call. If the day pass has not yet activated, that single voicemail retrieval triggers the full daily charge. Background app sync, push notifications, and automatic app updates all count toward data usage and can activate the daily pass without your knowledge.
Fair-use caps on UK carriers
Vodafone and EE apply unpublished fair-use data thresholds for Guinea-Bissau roaming. Once exceeded, speeds drop to 2G-equivalent rates while the daily charge continues. The exact threshold depends on your home plan tier and is not disclosed on the rate card.
Carrier rate analysis for Guinea-Bissau
AT&T International Day Pass
Checking voicemail on AT&T in Guinea-Bissau is treated as an inbound international call. That call triggers the $10 Day Pass for the calendar day, even if you did not plan to use data. A single voicemail check at 5 AM on your last morning adds $10 to your bill. Weekly AT&T cost: $70. Monthly: $300. A 20GB eSIM: $129.05 for 10 days on Orange GW. The eSIM does not charge for background triggers.
Verizon TravelPass
Verizon TravelPass for Guinea-Bissau: $10/day. The charge applies to each line on the account separately. A 7-day trip costs $70. A 10-day trip costs $100. TravelPass activates when your phone connects to Orange GW's network in Guinea-Bissau. That connection happens automatically on landing, triggered by the phone scanning for a signal. A 20GB eSIM on Orange GW: $129.05. Savings: $-29.05.
T-Mobile International
T-Mobile's 256 Kbps free tier causes excessive battery drain in Guinea-Bissau. Apps that expect faster connections retry failed requests repeatedly. Google Maps reloads tiles that timed out. Email clients re-fetch failed attachments. The constant retry cycle consumes more battery than full-speed data would. For a full day of travel, the 256 Kbps connection drains the battery 20-30% faster than a full-speed eSIM connection on Orange GW. The eSIM at $129.05 provides stable 4G LTE connectivity that apps handle without constant retries.
Vodafone Roaming Passport
Vodafone Roaming Passport for Guinea-Bissau: GBP6/day. 7 days: GBP42. 10 days: GBP60. This is Vodafone's rest-of-world rate. EU destinations may be included at no extra charge depending on your plan, but Guinea-Bissau falls under the paid roaming zone. A 20GB eSIM on Orange GW: $129.05 (USD). The eSIM is priced in USD, removing GBP exchange rate uncertainty.
EE Roam Abroad
EE contract customers get Roam Abroad at GBP6/day for Guinea-Bissau. EE PAYG (pay-as-you-go) customers face per-MB charges that vary by zone and can reach GBP6/MB in rest-of-world destinations. PAYG customers should purchase a 20GB eSIM at $129.05 before departure. Contract customers save GBP-41.61 (roughly) by switching to an eSIM for 10 days on Orange GW.
Xfinity Mobile International Pass
Average daily phone usage in Guinea-Bissau: 1.5 GB. Xfinity Mobile high-speed cap: 200 MB/day. You hit the throttle threshold in the first 2-3 hours of normal use. After throttle: maps load in 30+ seconds, ride-hailing apps freeze, photo uploads take minutes per image. The $10/day charge continues regardless. 10 days of throttled data: $100. A 20GB eSIM at $129.05 on Orange GW: full 4G LTE all day, every day.
Three UK Go Roam
Three UK customers on plans started before June 2022 may still have free Go Roam. Customers on plans started after June 2022 pay £2/day in Go Roam destinations and £5/day elsewhere. Guinea-Bissau roaming cost depends entirely on when your Three contract started. A travel eSIM at $129.05 on Orange GW costs the same regardless of when you signed up. No plan-date lookup required.
MVNO roaming comparison
Visible (Verizon MVNO) does not include international roaming. Visible customers in Guinea-Bissau have zero cellular data access unless they purchase a travel eSIM or buy a local SIM card. Unlike Verizon postpaid, Visible has no TravelPass equivalent. A 20GB eSIM at $129.05 on Orange GW's 4G LTE network is the recommended solution. Install before departure.
Rate summary
AT&T (International Day Pass): AT&T International Day Pass costs -23% more than an eSIM for Guinea-Bissau.
Verizon (TravelPass): Verizon TravelPass costs -23% more than an eSIM for Guinea-Bissau.
T-Mobile (Magenta (high-speed add-on)): T-Mobile's paid high-speed tier costs more than AT&T and more than an eSIM.
Vodafone (Roaming Passport): Vodafone rest-of-world rate exceeds eSIM cost for any trip over 1 day to Guinea-Bissau.
EE (Roam Abroad): EE Roam Abroad costs more than an eSIM for Guinea-Bissau at all trip lengths.
Bill shock scenarios
Scenario: you land at the international airport in Guinea-Bissau without a roaming plan. Your phone auto-connects to Orange GW. WhatsApp messages download (3 MB, $6.15). Email syncs with 2 attachments (8 MB, $16.40). Weather app refreshes (1 MB, $2.05). Total before you clear customs: $24.60 on AT&T pay-per-use. With a Day Pass: $10 for the entire arrival day. With a 20GB eSIM: $129.05 for the full 10 days.
How to switch to an eSIM
Switching from Verizon TravelPass to an eSIM for Guinea-Bissau: Step 1: Disable TravelPass before departure. In the My Verizon app, go to Account > Add-ons > TravelPass and remove it. This prevents the $10/day auto-charge. Step 2: Turn off data roaming in Settings > Connections > Mobile Networks > Data Roaming. Step 3: Install a 20GB eSIM for Guinea-Bissau at $129.05 on Orange GW. Step 4: Set the eSIM as primary data. Keep Verizon active for calls via WiFi Calling. The eSIM provides 4G LTE data without triggering TravelPass on landing.
Is eSIM cheaper than roaming in Guinea-Bissau?
Carrier roaming in Guinea-Bissau costs $100 on AT&T ($10/day for 10 days). An eSIM plan on Orange GW costs $129.05 for 20GB. Both connect to the same 4G LTE cell towers. The eSIM is cheaper by $0, a 0% reduction. Rates verified May 2026.
Should I use eSIM or roaming in Guinea-Bissau?
Use an eSIM for Guinea-Bissau. It costs $129.05 for 20GB on Orange GW's 4G LTE network. AT&T roaming charges $100 for the same 10 days on the same towers. The eSIM saves $0 with no daily billing surprises. Verified May 2026.
Does T-Mobile work in Guinea-Bissau?
Yes, T-Mobile connects to Orange GW in Guinea-Bissau, but free international data runs at 256 Kbps. That is 2G-equivalent speed. Upgrading to high-speed costs $15/day. A travel eSIM at $129.05 for 20GB provides full 4G LTE speed on the same Orange GW towers. Verified May 2026.
What is the best way to get data in Guinea-Bissau?
Use a travel eSIM with dual-SIM to keep your home number active in Guinea-Bissau. The eSIM handles data on Orange GW's 4G LTE network for $129.05. Your primary SIM stays connected for calls and texts. Carrier roaming charges $100 for the same setup. Verified May 2026.
Our verdict for Guinea-Bissau
When carrier roaming makes sense
Carrier roaming makes sense for 1-day layovers where the $10 charge is less than the effort of installing an eSIM. Travelers who need voice calling to local Guinea-Bissau numbers may also prefer their carrier plan, since eSIM data plans do not include voice service.
When an eSIM wins
For any trip longer than 2 days, an eSIM saves money over carrier roaming in Guinea-Bissau. Families and groups save even more because carrier charges multiply per person. Countries with airport SIM queues make eSIM especially valuable — install before departure, activate on landing.
Bottom line for Guinea-Bissau
For a 10-day trip to Guinea-Bissau, an eSIM saves $-29.05 vs AT&T and delivers the same 4G LTE connection on Orange GW's network.
Guinea-Bissau connectivity details
Local network infrastructure
Guinea-Bissau has 1 mobile network. Primary carriers: Orange GW, MTN GW. Both carrier roaming and eSIM connect to these same networks.
Quick tip
Prices in Guinea-Bissau are in XOF (CFA). Buying an eSIM in USD before departure removes the variable of exchange rates affecting your data cost mid-trip.
Good to know
Guinea-Bissau uses Type C power sockets. A dead phone means a dead eSIM connection — pack the right adapter to keep your device charged between venues.
Frequently asked questions
- Is roaming or eSIM better for Guinea-Bissau?
- For trips longer than 2 days, an eSIM is cheaper than carrier roaming in Guinea-Bissau. AT&T charges $10/day while an eSIM costs $129.05 total for a 10-day trip. Both use Orange GW's 4G LTE network — the only difference is the price.
- What hidden charges does AT&T have for Guinea-Bissau roaming?
- AT&T's International Day Pass auto-activates when your phone connects to Orange GW's network in Guinea-Bissau. Calendar-day billing means arriving at 11 PM costs a full $10. Background app sync, voicemail retrieval, and notifications can trigger the daily charge on days you intended to stay offline.
- Do eSIMs use the same network as carrier roaming in Guinea-Bissau?
- Both eSIM and carrier roaming connect to Orange GW's 4G LTE towers in Guinea-Bissau. The network, coverage area, and download speeds are identical. The difference is pricing: carriers charge $10-$15/day while eSIMs charge a flat rate for the entire trip.
- Is T-Mobile roaming really free in Guinea-Bissau?
- T-Mobile Magenta includes free data in Guinea-Bissau, but speed is throttled to 256 Kbps. That is too slow for maps, video calls, or photo uploads. The high-speed add-on costs $15/day — more expensive than most eSIM plans.
- Can I use eSIM and keep my carrier number in Guinea-Bissau?
- Dual-SIM phones (most models since 2019) run both your carrier SIM and the travel eSIM simultaneously. Your home number stays active for calls and texts over WiFi. The eSIM handles all data on Orange GW's 4G LTE network in Guinea-Bissau.
- What speed does carrier roaming get in Guinea-Bissau?
- Carrier roaming in Guinea-Bissau connects to Orange GW's 4G LTE network — the same towers and speeds that an eSIM uses. AT&T and Verizon offer LTE speeds through their day pass. T-Mobile's free tier is capped at 256 Kbps unless you pay for the high-speed add-on.
- Does Verizon auto-charge for roaming in Guinea-Bissau?
- Verizon TravelPass activates automatically when your phone connects abroad in Guinea-Bissau. A single background data transfer triggers the $10/day charge. The only way to avoid it is to disable data roaming in your phone settings before landing.
- How do UK carrier rates compare for Guinea-Bissau?
- Vodafone and EE charge £6/day for Guinea-Bissau roaming outside their EU free-roaming zone. That is roughly $7.50/day at current exchange rates. An eSIM on Orange GW's network costs $129.05 for the entire trip.
- How much does carrier roaming cost in Guinea-Bissau?
- A family of four on AT&T in Guinea-Bissau pays $40/day ($10/day per line x 4). Over a week that reaches $280. The same family shares one travel eSIM on Orange GW starting at $7.74 for 1GB — a single purchase covers all devices through tethering. Verizon charges the same per-line rate. T-Mobile includes free data at 256 Kbps, which cannot load a map.
- Is T-Mobile's free international data fast enough in Guinea-Bissau?
- No. At 256 Kbps, T-Mobile's free international tier in Guinea-Bissau cannot load a map tile in under 15 seconds. Video calling needs 2 Mbps minimum — eight times what T-Mobile provides for free. Their paid speed upgrade runs $15/day. A 4G LTE eSIM on Orange GW at $5.74/GB gives you real speeds without the daily fee.
- How is my roaming bill calculated in Guinea-Bissau?
- At 3 days in Guinea-Bissau: AT&T costs $30, eSIM costs 1GB for $7.74. At 7 days: AT&T $70, eSIM same 1GB for $7.74. At 14 days: AT&T $140, eSIM same fixed rate. The eSIM billing model is flat — the longer the trip, the wider the gap. T-Mobile free tier is $0 but too slow at 256 Kbps to be usable beyond text.
- Is a travel eSIM worth buying for a 3-day trip to Guinea-Bissau?
- Yes. AT&T International Day Pass for 3 days costs $30. Verizon TravelPass costs $30. A travel eSIM on Orange GW for a 3-day trip at 1.5 GB/day average costs roughly $25.83 — often covered by a 3 GB plan. The breakeven is day one: a single day of eSIM data costs less than one AT&T day pass in Guinea-Bissau. The only exception: T-Mobile Magenta customers in Mexico and Canada pay nothing for roaming. Rates checked June 2026.