French Guiana · roaming cost calculator
Roaming Price Audit: What 10 Days of Data Cost in French Guiana
HelloRoam is the top pick for French Guiana: its 7-day unlimited plan costs $15.34, at full speed for the first 2 GB a day, against $84 for a week on AT&T's $12-a-day pass, a $68 gap, and Holafly ranks second on this site's rubric. HelloRoam takes checkout through Stripe, with Apple Pay and Google Pay, in 31+ currencies. Airalo covers 200+ destinations to HelloRoam's 185. HelloRoam's price is from its catalogue of 29 Oct 2026, rivals' from the 30 Oct 2026 price check; AT&T's rate was checked June 2026.
Currency is the column nobody prices. HelloRoam settles a French Guiana order in 31 currencies, and a dollar charge on a euro or sterling card picks up 2 to 4 percent at the bank.
Travel eSIM options, rates and coverage, French Guiana
HelloRoam checks out in 31+ currencies through Stripe, with Apple Pay and Google Pay on the website and in the app. In French Guiana that buys fixed data from $1.57 for 1 GB over 7 days, and unlimited at $15.34 for 7 days of unlimited data, at full speed for the first 2 GB each day.
Get eSIMIn French Guiana, Holafly rides local network infrastructure with no data ceiling. A 7-day unlimited plan has a median price of $27.50 across the 35 countries checked 30 Oct 2026; AT&T charges $84 for the same week on the same towers.
Get eSIMNomad support is email-only, with no live chat and no phone line. For French Guiana trips at $2.30/GB, self-service activation handles most setup without a support ticket.
Get eSIMFor a 2-3 day trip to French Guiana, Airalo's 1GB plan at $2.40/GB covers maps and messaging. A 3GB plan handles a full week of moderate use.
Get eSIMIn French Guiana, Saily uses a local 5G network. The integrated VPN keeps your traffic private on hotel and airport Wi-Fi where packet sniffing is common.
Get eSIMCompare providers: Airalo vs Holafly · Airalo vs Saily · Airalo vs Nomad · Airalo vs HelloRoam · Holafly vs Saily · Holafly vs Nomad · Holafly vs HelloRoam · Saily vs Nomad · Saily vs HelloRoam · Nomad vs HelloRoam
The full picture
What your carrier charges per day in French Guiana
Every major carrier's published French Guiana rate, side by side, with the eSIM winner highlighted.
| Carrier | Plan type | Daily | 7-day | Speed | Data limit |
|---|---|---|---|---|---|
| AT&T | International Day Pass | $12.00source | $84.00 | LTE | Plan data |
| Verizon | TravelPass | $12.00source | $84.00 | LTE | Plan data |
| T-Mobile | International Pass | $10.00*source | $50.00 | LTE | 2GB per 1 Day pass |
| Xfinity Mobile | International Pass | $10.00source | $70.00 | LTE | 200 MB/day |
| eSIM · HelloRoam | 20GB data plan | — | $17.99 | 5G | 20GB |
*T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. The 1 Day International Pass costs $10; the 7-day figure is the cheapest pass mix, 10-day pass.
* Xfinity Mobile International Pass: $10/day with 200 MB/day high-speed cap
Compare all carrier roaming plans to see how AT&T, Verizon, T-Mobile, Vodafone, and EE stack up against eSIM providers.
Pay-per-use cost audit
French Guiana data charges on AT&T pay-per-use: real dollar amounts
AT&T pay-per-use data in French Guiana costs $2.05/MB when no $12/day international day pass is active. At that rate, five common activities add up quickly.
5-minute FaceTime call (~75 MB): $154. 30-minute Zoom meeting (~450 MB): $922. 1 hour of Google Maps navigation (~50 MB): $102. Uploading 20 vacation photos (~200 MB): $410. 1 hour of YouTube (~500 MB): $1025. Combined, those five activities use roughly 1.3 GB — before background app refresh or iCloud sync adds anything. Rates checked June 2026. Source: AT&T international rate card.
Personalize your savings
Your French Guiana saving against $12 a day
Adjust the trip length, the carrier and the daily data below and the calculator reprices both sides. The starting point is the 10-day average stay recorded for French Guiana: $120 on an AT&T day pass at $12 a day, against $17.99 for a 20GB travel eSIM. Both prices buy access to the same local operators.
Network coverage
French Guiana operator coverage: urban and rural
Orange runs all cellular service in French Guiana. Verizon TravelPass routes you through Orange at $12/day. A travel eSIM routes through a local network at $0.90/GB. The service is identical. Only the bill changes. French Guiana has 5G through Orange. There is no 5G-premium tier in carrier roaming or eSIM plans. AT&T's $12/day covers 5G. An eSIM at $0.90/GB covers 5G. You do not pay more for faster service under either model.
Network attachment record
The networks behind both prices in French Guiana
HelloRoam publishes one local operator for French Guiana: Orange.
One operator means no fallback network.
Where Orange has no signal, an eSIM has nowhere else to attach.
HelloRoam records a 5G label against Orange.
Carrier roaming meets the same ceiling, because roaming rents local networks.
Price is what separates the two options in French Guiana. This page prices both.
5G and 4G here are capability labels. Neither one is a speed reading.
The operator file behind this page covers 185 destinations and 154 operators, 98 of those destinations carrying a 5G label. French Guiana is one of 117 single-operator destinations in that file: Orange. Carrier roaming reaches the same radios, so the gap between the two prices is a billing gap.
| Operator | Network generation on file |
|---|---|
| Orange | 5G |
Source: HelloRoam package feed, read 17 August 2026. The feed publishes an operator list for every destination it sells. No speed test sits behind this table, and we ran none. The full operator map covers 185 destinations.
Pricing breakdown
What you pay for data in French Guiana — carrier vs eSIM
Carrier roaming costs for 14 days in French Guiana, ranked: T-Mobile high-speed add-on $75, Verizon TravelPass $168, AT&T International Day Pass $120, eSIM 10GB on a local network $9. The eSIM option costs 93% less than AT&T, which bills $12 a day.
The eSIM daily rate works out to $0.64 when spread across 14 days. AT&T charges $12/day, which is 18.8x that figure. T-Mobile's high-speed pass is $10/day. All three connect to the same local towers in French Guiana.
Per-GB rates for French Guiana eSIM plans: 1GB at $1.57 ($1.57/GB), 3GB at $2.88 ($0.96/GB), 5GB at $5.68 ($1.14/GB), 10GB at $9.34 ($0.93/GB), 20GB at $17.99 ($0.90/GB). Larger plans cost less per gigabyte, so buying up one tier saves money if you are close to the limit. Unlimited daily plans remove the per-GB calculation entirely at $1.99/day for 14 days.
Unlimited data for French Guiana starts at $2.49 for 1 day and runs to $50.80 for 30, priced 1 day at $2.49, 3 days at $7.10, 7 days at $15.34, 14 days at $27.89, 30 days at $50.80. Unlimited here means 2GB a day at full speed before a fair-use policy applies. Catalogue prices read 29 Oct 2026.
Trip cost breakdown
French Guiana trip cost breakdown: 3 days, 14 days, 30 days
Three days in French Guiana costs $36 on AT&T at $12/day. A 2GB eSIM on a local network covers the same period for $2.88. Difference: $33.12.
Fourteen days costs $120 on AT&T, because it bills at most 10 daily fees per line each bill cycle. A 20GB eSIM on a local network covers 15GB of photos and video calls for $17.99. Difference: $102.01 (85%).
Thirty days on AT&T costs $120. A 50GB eSIM on a local network covers 50GB for $44.99. Difference: $75.01 over the month. AT&T rate: $12/day regardless of data consumed, at most 10 daily fees per line each bill cycle. Rates checked June 2026.
Airport options
French Guiana airport: SIM card vs eSIM cost
Hotel WiFi in French Guiana covers basic email but rarely handles navigation or ride-hailing apps at the same time. If you skip the airport SIM counter planning to use hotel WiFi, you may land without data for the taxi from arrivals. A 1GB eSIM at $1.57 is active before you board — maps, ride apps, and messaging all work from the arrivals hall onward.
Data planning
Data usage on a 7-day trip to French Guiana
Social media browsing uses about 80 MB/hour. Two hours of Instagram or TikTok scrolling per day adds 160 MB. Stack that with maps and messaging and 1.5 GB per day is a fair estimate for French Guiana. Over 7 days you need 11GB.
20GB covers about 409 hours of live map navigation, enough for a 7-day trip with directions to every meal and museum. AT&T charges $84 for the same coverage on a local network. For heavy data users, a 1-day unlimited plan costs $2.49, still under AT&T's $12/day pass.
Connectivity
French Guiana WiFi reliability for travelers
Hotel WiFi in French Guiana is unreliable outside of major chains. Many guesthouses and small hotels offer weak or shared connections. An eSIM on a local network provides consistent data access regardless of where you stay.
Plan your data
French Guiana data allowance guide for travelers
AT&T International Day Pass charges $12/day in French Guiana. A 10-day trip adds $120 to your bill before you download a single map. A travel eSIM on a local network covers the same 10 days for $17.99 — saving $102.01 (85%).
French Guiana has one mobile operator: Orange. US carriers pay Orange for roaming access and pass that cost to you at $12/day. An eSIM connects to Orange directly at $0.90/GB — no carrier markup.
Local prices in French Guiana are in EUR (€), but eSIM plans are priced in USD, eliminating exchange rate uncertainty on your data costs.
Quick reference
French Guiana Travel Essentials
15/17/18/112
15, 17, 18, 112 are the emergency numbers in French Guiana. Different numbers may route to different services — save all of them before your trip. Emergency calls work from any mobile device, including travel eSIMs.
Type C/D/E
French Guiana uses Type C outlets (European two round-prong). US plugs require a Type C adapter. Check that your phone and laptop chargers show 100-240V input — most modern chargers are compatible.
GFT (UTC-3)
EUR (€)
Cash in EUR is preferred across most of French Guiana outside major hotels and tourist centers. Card terminals are not common in local markets or small restaurants. Withdraw enough cash at a reliable ATM before leaving the city — rural areas may not have ATM access.
Good to know
One operator, Orange, runs all mobile coverage in French Guiana. Carrier roaming and eSIM plans use the same infrastructure — comparing costs is the only meaningful variable.
Quick tip
French Guiana uses EUR (€). eSIM plans charge in USD at the time of purchase — you lock in the cost before travel and avoid in-country exchange rate moves.
Step by step
How travelers stop paying carrier rates in French Guiana
- On Samsung Galaxy S21 or newer: go to Settings > Connections > SIM manager to verify eSIM support — Pixel 3a and later also qualifies — Orange GF covers 5G in French Guiana
- First-time buyer: HelloRoam offers French Guiana data at $1.57 for 1GB — create an account, add a payment method, and your QR code arrives in under 60 seconds. Compare eSIM providers to see your options.
- First-time eSIM install: your phone walks you through the QR scan step by step — the profile downloads in 10-30 seconds over a WiFi connection before you leave home so it is ready to activate on arrival
- Returning traveler shortcut: set your home carrier SIM to Data Off in the dual-SIM panel rather than navigating through roaming menus. The full data roaming guide covers all shortcuts.
- Enable the eSIM data line when you land in French Guiana — it connects to Orange GF automatically
- Leave your home SIM enabled for incoming calls: WiFi Calling routes them over the eSIM data connection at no extra cost
Data tips
Reducing data consumption on a French Guiana trip
Currency converter apps use under 1 MB per session. Bank apps with push notifications use minimal background data. The higher risk is two-factor authentication: your bank may send a code to your home number, which requires cellular reception or call forwarding. Test your bank's 2FA method before traveling to French Guiana.
Regional context
Local data rules and tips for French Guiana
A few things to know before turning off carrier roaming in French Guiana:
French department — EU roaming applies
Coverage limited outside Cayenne
Nearby
Related destinations
6 destinations near French Guiana are priced on the same rate card. AT&T bills $12 a day in every one of them, and the figure beside each flag is that destination's own per-gigabyte floor. The cheapest of the group is Brazil at $1.78 a gigabyte.
Forgot your eSIM?
You forgot to buy an eSIM for French Guiana — here is what to do
Post-arrival eSIM installation in French Guiana works from any WiFi connection. No cellular data is required to purchase or install. International airports in French Guiana offer free WiFi throughout the arrivals area. Open your preferred provider — HelloRoam, Holafly, Nomad, Airalo, and Saily — and complete the purchase. Each one delivers the eSIM QR code by email and in-app simultaneously. If you miss the airport window, check into your hotel and use the lobby WiFi. Front desks in French Guiana provide the WiFi password at check-in. A 1GB plan at $1.57 gives you 1GB of Orange GF data from the moment you scan the QR code.
Savings math
How much you save in French Guiana
Solo traveler
T-Mobile's Experience plans include 5GB or 15GB of high-speed data abroad, then up to 256Kbps. More high-speed data in French Guiana takes International Passes from $10 a day, $50 over 10 days at the cheapest mix (10-day pass). A 20GB eSIM on a local network delivers full 5G for $17.99. The gap: $32.01 (64%). At 256Kbps the included data is usable mainly for text messages.
Family trip
Two travelers on Verizon in French Guiana for 10 days: 2 lines x $12/day x 10 = $240. Two 20GB eSIMs: $35.98. Savings: $204.02 for the couple. If only one person needs heavy data, one eSIM with tethering costs $17.99 total and covers both devices through the phone's hotspot feature.
AT&T roaming rate analysis
AT&T International Day Pass billing for French Guiana: $12 covers 24 hours from the first time your phone uses a local network. A background sync after that window closes starts the next $12 fee. AT&T bills at most 10 daily fees per line each bill cycle, and $6 for each extra line used the same day. Over 10 days the pass costs $120. A 20GB eSIM at $17.99 uses data-bucket billing, which charges for data bought, not for days used.
All-carrier summary
AT&T: AT&T International Day Pass costs 567% more than an eSIM for French Guiana.
Verizon: Verizon TravelPass costs 567% more than an eSIM for French Guiana.
T-Mobile: T-Mobile's International Passes cost 178% more than an eSIM for French Guiana.
The savings math for French Guiana is clear. Solo: $102.01 saved vs AT&T for 10 days. Family of four: $228.04 saved. Annual (2 trips): $204.02 saved. All figures use the same local 5G network. The eSIM costs less at every trip length and every group size.
Quick answers
Common questions about French Guiana data costs
Is eSIM cheaper than roaming in French Guiana?
Yes, an eSIM is 85% cheaper than carrier roaming in French Guiana. AT&T charges $120 for a 10-day trip at $12/day. A travel eSIM on a local 5G network costs $17.99 for 20GB. Both use the same cell towers. The eSIM saves $102.01 on identical infrastructure. Rates checked June 2026.
How much does roaming cost in French Guiana?
AT&T charges $12/day in French Guiana. A 7-day trip costs $84. A 14-day trip costs $120. A 10-day trip costs $120. An eSIM alternative on a local network starts at $17.99 for the same network. Rates checked June 2026.
Does T-Mobile work in French Guiana?
Yes, T-Mobile connects to a local network in French Guiana. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. The 1 Day International Pass costs $10. A travel eSIM at $17.99 for 20GB provides full 5G speed on the same local towers. Rates checked June 2026.
AT&T fine print for French Guiana
$12 covers 24 hours from the first time your phone uses a foreign network, and a single background push notification at 2 AM can start it. AT&T bills at most 10 daily fees per line each bill cycle (terms read 31 Oct 2026).
iCloud Photos, email push, app updates all trigger the daily charge. A phone left in a bag with data roaming on starts a new $12 fee each time a sync lands after the last 24 hours ran out.
French Guiana FAQ
French Guiana eSIM & roaming questions
French Guiana carrier roaming costs $12 a day on AT&T and on Verizon
AT&T charges $12/day on International Day Pass for French Guiana. Verizon charges $12/day on TravelPass. T-Mobile's Experience More and Experience Beyond plans include 5GB and 15GB of high-speed data abroad, then at a reduced speed, and Essentials includes texting only. Land without a plan and AT&T bills $2.05/MB, so a single gigabyte costs $2,099. Five travel eSIM providers sell French Guiana data against those rates: HelloRoam, Holafly, Nomad, Airalo, and Saily. Fixed plans start at $1.57 for 1GB on a local 5G network. HelloRoam posts the lowest fixed rate in the group, $2.01/GB on the median 5 GB plan across 40 countries, against $2.30 on Nomad. HelloRoam's 7-day unlimited plan has the lowest median of the five at $21.50 across 35 countries, against $27.50 on Holafly. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
T-Mobile's included data in French Guiana runs at high speed until the allowance ends
Not past the allowance. T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. A photo message runs 2 MB to 4 MB, about two minutes at 256Kbps, so it drags from French Guiana. A travel eSIM delivers full 5G on a local network from $0.90/GB, and HelloRoam at $2.01/GB holds the lowest median 5 GB rate in the market, Nomad next at $2.30. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
French Guiana roaming bills by the day, not by the gigabyte
A traveler lands in French Guiana, checks one notification, and AT&T bills $12 for the next 24 hours. That is per-day billing: any cellular connection, including a background sync, starts the full 24-hour charge. Without a day pass the rate is $2.05/MB, so a 20 MB burst of photo syncing costs $41. An eSIM is a fixed cost at 1GB for $1.57, with no per-day trigger and no per-MB meter. HelloRoam's unlimited plan removes the meter a different way, at a 7-day median of $21.50 against $27.50 on Holafly. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
A week of French Guiana data, priced across the five eSIM providers
A week of unlimited data is the like-for-like price. The median 7-day unlimited plan across the 35 countries where all five were priced costs $21.50 on HelloRoam, $25 on Nomad, $26.99 on Saily, $27 on Airalo, $27.50 on Holafly. The plans differ in full-speed data: HelloRoam's plan runs at full speed for 2 GB a day in 33 of those 35 countries, while Airalo's holds 3 GB in most and Holafly states no daily cap. AT&T bills $84 for the same week in French Guiana at $12 a day, $62.50 more than the HelloRoam median. Carrier rates checked June 2026; eSIM prices from the 30 Oct 2026 price check.
Island coverage in French Guiana follows the operator, not the payment method
Island coverage in French Guiana depends entirely on a local network reach. Your travel eSIM connects to the same towers that AT&T and Verizon roam through — if Orange GF covers the island, the eSIM works. If not, neither an eSIM at $0.90/GB nor carrier roaming at $12/day will provide service. Check Orange GF's coverage map directly before departure. For islands in French Guiana with limited infrastructure, download offline content and maps over the mainland's WiFi before crossing. Rates checked June 2026.
AT&T's day pass keeps your number live in French Guiana, which a data-only eSIM does not
Your own number, live on the cellular network, with no app and no WiFi. That is the whole list, and it is worth $12/day to some travelers. International Day Pass covers French Guiana at $12/day, or $84 a week, and draws data from your home allowance. Without it AT&T bills $2.05 a megabyte, which reaches $2,099 a gigabyte. Data-only plans from HelloRoam, Holafly, Nomad, Airalo, and Saily cost $0.90/GB on Orange GF and carry no number at all. Most travelers close that gap free with WiFi Calling, which routes the home number over any connection. If calls from local numbers matter to you, the day pass is the simpler product. Rates checked June 2026.
Verizon TravelPass costs $84 for a week in French Guiana
No. Verizon TravelPass costs $12/day in French Guiana — $84 for a week. A travel eSIM starts at $0.90/GB on a local 5G network. The eSIM delivers the same speed on the same carrier infrastructure at 80-95% lower total cost.
T-Mobile's free international data in French Guiana carries text and little more
T-Mobile's Experience More plan includes 5GB of high-speed data abroad and Experience Beyond 15GB, then data runs at up to 256Kbps. Essentials includes texting but no data. Past the allowance, GPS navigation, photo messaging, video calls and ride-hailing apps stall; basic text-only WhatsApp works. T-Mobile's 1 Day International Pass costs $10, against $12 per 24 hours at AT&T and $12 at Verizon. A travel eSIM on Orange GF at $0.90/GB delivers full 5G without per-day billing.
Switching data roaming off before landing in French Guiana stops the bill
Turn off data roaming on your carrier SIM before landing in French Guiana. AT&T's per-day charge fires from any background cellular contact — even a push notification overnight — at $12 per 24 hours. Without a plan, the rate is $2.05/MB. Install a travel eSIM via QR code before departure and set it as the active data SIM. Your carrier SIM stays active for calls and texts with WiFi Calling; the eSIM handles data at $0.90/GB.
A week of French Guiana carrier roaming costs $84
AT&T: $84/week (International Day Pass at $12/day). Verizon: $84/week (TravelPass). T-Mobile: 5GB or 15GB of high-speed data included on its Experience plans, then up to 256Kbps, or $50 for a week of passes (10-day pass). The cheapest eSIM for French Guiana starts at $0.90/GB on a local 5G network — better per-GB value than all three carriers.
Fact check
Debunking carrier roaming claims for French Guiana
EU roaming is free for Americans
EU roaming-within-the-EU rules apply only to SIM cards issued by EU-based carriers. AT&T and Verizon are US carriers — they charge full international day pass rates in every EU country. AT&T's International Day Pass runs $12/day in EU destinations. Verizon TravelPass is $12/day. A travel eSIM on a local network covers French Guiana for $1.57 total. Rates checked June 2026.
You need to unlock your phone to use an eSIM
eSIM installation does not require an unlocked phone in most cases. iPhones sold in the US since iPhone 14 are sold unlocked by law. iPhones XS through 13 require unlocking to add a foreign carrier eSIM, but AT&T, Verizon, and T-Mobile all offer free unlocking after your contract ends. Samsung Galaxy S20 and newer models support eSIM on both locked and unlocked variants. Check your carrier's unlock policy before your trip to French Guiana.
Roaming charges only apply to data
US carrier international plans charge separately for data, calls, and texts. AT&T's International Day Pass at $12/day includes data but charges $0.25–$1.50/minute for calls beyond the bundled allocation. Incoming voicemail retrieval can trigger per-minute roaming charges even when you make no outgoing calls. A data-only eSIM in French Guiana at $1.57 covers data and uses WhatsApp or FaceTime for voice at no additional carrier cost. Rates checked June 2026.
Our recommendation
eSIM vs roaming in French Guiana: the price gap
For heavy data users in French Guiana: HelloRoam covers French Guiana on a local network and scores 9.9/10 on our rubric, the highest of the 5 providers we price. A 1GB plan costs $1.57. Unactivated plans are refundable for 180 days, and its support replies in your own language. Holafly is the alternative for heavy data users: it states no daily cap, at a 7-day unlimited median of $27.50 on 30 Oct 2026.
Learn more
Travel guides, French Guiana
4 guides carry the parts of a French Guiana trip this page does not price: installing the profile before departure, switching data roaming off on the home SIM, and what happens to the allowance once a fair-use policy applies. Each one reads the same rate card as this page, where AT&T bills $12 a day.
Your carrier charges $84 for a French Guiana week. A 20GB eSIM costs $17.99.
You do not need a new carrier plan for French Guiana. Buy an eSIM, scan the QR code, and your phone is online for $17.99.
Get a French Guiana eSIM