Destination guide

How to Avoid Roaming Charges in French Guiana (2026)

French Guiana is one of the easiest places to stay connected cheaply — if you skip roaming and use an eSIM. Here is exactly how.

Updated June 2026Prices verified weekly

How to avoid roaming

Some apps need VPN access in French Guiana. AT&T charges $10/day for data that may not reach every service. Airalo offers 20GB on Orange GF for $17.99. 7 days saves $52 vs carrier roaming.

June 2026 verified1+ networksFrom $0.90/GB5 providers comparedUpdated June 2026

! Danger

US carriers charge $10/day or $2.05/MB for data roaming in French Guiana. A single week of casual phone use costs $70–200+.

&check; Solution

A travel eSIM from Airalo connects to Orange's 5G network at $0.90/GB. Same towers, same coverage, no roaming middleman.

The smart way to stay connected in French Guiana

Some countries require device registration before foreign phones can access local networks. Without registration, even an eSIM may face service interruption after 30-90 days. AT&T does not handle this for you — and still charges $10/day on Orange GF whether your device is registered or not. A 7-day trip costs $70 in roaming fees.

Check IMEI registration requirements before your trip. For short visits under 30 days, most travelers avoid the requirement entirely. Install a French Guiana eSIM while on home WiFi. A 20GB plan on Orange GF costs $17.99. Disable data roaming on your home SIM. After landing, activate the eSIM and connect to Orange GF without carrier markup.

How much roaming costs in French Guiana

One FaceTime or Zoom call uses approximately 1 GB per hour. At $2.05/MB on Orange GF in French Guiana, that is $2,099 for a single hour of video calling without a roaming plan. A 15-minute check-in with family: $525. Even AT&T's $10/day Day Pass throttles after you hit your domestic data cap, making video calls stutter and drop. Verizon TravelPass has the same cap. A 20GB eSIM on Orange GF at $17.99 provides dedicated data for video calls at full speed — no per-minute roaming math, no throttle tied to your US plan balance.

The price of staying connected in French Guiana

Roaming vs eSIM cost per activity in French Guiana (AT&T $2.05/MB vs eSIM at $$0.90/GB)
Activity	Data Used	Roaming Cost	eSIM Cost
Send WhatsApp photo	3 MB	$6.15	$0.00
10 min Google Maps	5 MB	$10.25	$0.00
10 min Instagram scrolling	50 MB	$102.50	$0.04
1 hour video call (Zoom)	1.0 GB	$2099.20	$0.90
30 min Spotify	45 MB	$92.25	$0.04
Check Google Translate (10 queries)	2 MB	$4.10	$0.00

Trip data costs for French Guiana

Two travelers in French Guiana for 7 days: AT&T charges $140. Verizon TravelPass: same $140. Both phones connect to Orange GF independently — two daily charges, two midnight resets, two bills. Two eSIMs on Orange GF cost $35.98 total for 20GB each. Couple savings: $104.02. Date nights get expensive when every photo upload triggers a separate $10 charge on each partner's phone. The eSIM approach costs $35.98 for both travelers for the entire trip.

What your carrier charges in French Guiana

AT&T International Day Pass charges $10/day in French Guiana. Verizon TravelPass charges $10/day. Both connect through Orange GF and offer the same coverage map. T-Mobile includes international data on most plans, but throttles speeds to 256 Kbps — slow enough that Google Maps tiles fail to load and ride-hailing apps time out. All three carriers use Orange GF's towers in French Guiana. None of them operate their own infrastructure here. The $10/day fee pays for the billing agreement between your home carrier and Orange GF, not for better signal or faster speeds. A French Guiana eSIM on Orange GF costs $17.99 for 20GB — the same network, the same towers, at $0.90/GB instead of $10/day.

How roaming billing works in French Guiana

AT&T's International Day Pass in French Guiana is not truly unlimited. Your domestic data cap applies to roaming — once exceeded, AT&T throttles your connection to 128 Kbps on Orange GF's network. At 128 Kbps, Google Maps tiles load in 20-30 seconds. Ride-hailing apps time out. Video calls are unusable. The $10/day charge does not pause when throttling starts — you pay the full daily rate for slow-speed access. Travelers with lower domestic data plans hit the throttle fastest. An eSIM provides a dedicated data allocation on Orange GF that does not interact with your domestic cap. 20GB at $17.99 gives you a separate data balance that does not depend on what you used before your trip.

Silent processes on your phone in French Guiana

iCloud and Google Photos upload every image on your camera roll overnight in French Guiana. A typical nightly backup pushes 500 MB to 1 GB through Orange GF's network while you sleep. At $2.05/MB, a 500 MB backup costs $1,025. A 1 GB backup costs $2,050. Your phone does not ask permission. The upload starts the moment your device connects to cellular data and detects unsynced photos. Disable iCloud Photos backup on cellular before landing: Settings > Photos > Cellular Data (off). On Android, open Google Photos > Settings > Backup > Use cellular data (off). An eSIM on Orange GF at $1.57 for 1GB turns this nightly upload into a flat-rate expense instead of a four-figure surprise.

Airport SIM counter vs eSIM in French Guiana

You land in French Guiana at 11:45pm and the airport SIM counter is closed. The next shift starts at 7am. Your options: pay AT&T $10/day on Orange GF until morning, or use a pre-installed eSIM that activates the moment airplane mode turns off. Airport SIM counters at the airport operate on local business hours, not your flight schedule. Red-eye arrivals, early-morning landings, and delayed flights all arrive outside counter hours. An eSIM on Orange GF installs before you leave home — 1GB for $1.57, active on landing regardless of the hour. No counter, no waiting for business hours, no $10 overnight charge.

Pre-departure eSIM setup for French Guiana

! Do this before step 2

Disable data roaming on your home SIM first. If your home SIM is still roaming-enabled when your eSIM activates, your carrier can charge both lines simultaneously. Settings → Cellular → Cellular Data Options → Data Roaming: OFF.

Disable data roaming on your home SIM

Go to Settings › Cellular › Cellular Data Options and turn Data Roaming OFF. This is the most critical step. Skipping it means French Guiana roaming charges can still hit your home carrier bill.

Buy a travel eSIM

Get a plan from Airalo at $0.90/GB. Do this at home on WiFi before you fly — QR code delivery takes under 60 seconds.

Install the eSIM profile

Open phone Settings › Cellular › Add eSIM. Scan the QR code or tap the install link in your confirmation email.

Set eSIM as default data on arrival

After landing in French Guiana, go to Settings › Cellular and set your travel eSIM as the primary data line. It connects to Orange within minutes.

Keep home SIM for calls via WiFi Calling

Your home number stays reachable for free over WiFi. You pay eSIM rates for data — 85–95% less than roaming.

Need help with device compatibility? Check eSIM compatible phones or our how eSIMs work guide before purchasing.

iPhone settings for travel to French Guiana

On iPhone, disable roaming before landing in French Guiana: Settings > Cellular > Cellular Data Options > Data Roaming OFF. This single toggle blocks AT&T from billing through Orange GF's network. Then install your eSIM: Settings > Cellular > Add Cellular Plan > scan the QR code. After landing, go to Settings > Cellular and set your eSIM as the active data line. Keep "Allow Cellular Data Switching" off to prevent your home SIM from activating during eSIM coverage gaps. Your home SIM stays enabled for voice calls and WiFi Calling. The eSIM handles all data on Orange GF at $1.57 for 1GB.

Device-Specific Roaming Settings for French Guiana

iPhone Settings

The safest landing sequence at the airport: keep Airplane Mode ON when the plane touches down. Do not disable it until your eSIM is ready. Step 1: enable WiFi while still in Airplane Mode (Settings > WiFi ON, or tap the WiFi icon in Control Center). Step 2: connect to airport WiFi to verify your eSIM profile if not already installed. Step 3: go to Settings > Cellular > confirm Data Roaming is OFF on your AT&T or Verizon line. Step 4: confirm your e-SIM is set as the Cellular Data line. Step 5: disable Airplane Mode. Your iPhone connects to Orange GF through the eSIM. AT&T sees no data roaming. No $10 trigger. The eSIM costs $1.57 for 1GB on Orange GF. Total time: 60 seconds.

Samsung Settings

Samsung One UI includes a Roaming quick tile in the notification shade. Swipe down twice from the top of your Galaxy S24 or S25. Find the Roaming tile (may need to edit tile layout: tap the pencil icon and drag Roaming into your active tiles). Tap the tile to toggle roaming OFF on your home carrier before landing at the airport. This is the fastest one-tap method on any Android phone. For eSIM installation: Settings > Connections > SIM Manager > Add eSIM. Scan the provider's QR code. Set the e-SIM as your mobile data line. The quick tile confirms roaming status at a glance: OFF on your home carrier, data flowing through Orange GF on your eSIM at $1.57 for 1GB.

Pixel Settings

Google Pixel 9 and Pixel 8 on Android 15: open Settings > Network & Internet > SIMs. Tap your home carrier (AT&T, Verizon, or T-Mobile). Toggle Roaming OFF. This prevents the $10/day charge on Orange GF in French Guiana. Install a travel eSIM: Settings > Network & Internet > SIMs > Add SIM (or download from your provider's app). After scanning the QR code, return to Settings > Network & Internet > SIMs and tap the new e-SIM entry. Set it as your mobile data SIM. Your home carrier handles calls and texts. The eSIM handles all data on Orange GF at $1.57 for 1GB. Pixel phones support per-SIM roaming toggles, so roaming stays OFF on your home carrier and ON for the eSIM simultaneously.

Dual SIM Configuration

Three mistakes travelers make with dual-SIM in French Guiana. Mistake 1: enabling data roaming on the wrong SIM. Your home carrier line must have Data Roaming OFF. Your eSIM line must have Data Roaming ON. Reversing this charges $10/day on AT&T and disconnects your e-SIM. Mistake 2: forgetting to set the eSIM as the data line. Both SIMs can be active, but only one routes cellular data. Verify: iPhone Settings > Cellular > Cellular Data shows the eSIM. Samsung SIM Manager > Preferred SIM > Data shows the eSIM. Mistake 3: leaving iMessage and FaceTime on the home SIM's data. Go to Settings > Messages > iMessage and Settings > FaceTime and verify both use the eSIM line or WiFi for data. An e SIM on Orange GF at $1.57 for 1GB handles all data. Your home SIM handles voice and SMS only. Over 7 days, correct dual-SIM setup saves $68.43 versus AT&T Day Pass.

Data Usage Monitoring

Pixel phones on Android 15: Settings > Network & Internet > SIMs > tap your e SIM > App Data Usage. This shows per-app consumption on Orange GF in French Guiana. Set a data warning: Settings > Network & Internet > SIMs > eSIM > Data Warning & Limit. Warning at 16 GB, limit at 19 GB. Your 20GB plan gives a daily budget of 2.9 GB over 7 days. Pixel shows the most data-hungry apps first. Restrict background data for streaming and social media apps that consume more than 100 MB/day. Keep Maps and messaging unrestricted.

Roaming Avoidance Strategies for French Guiana

Offline Preparation

Download French Guiana in Google Maps before departure. Tap your profile icon, select Offline Maps, and download the regions you plan to visit. Offline maps include street-level navigation, Points of Interest, and basic search. This saves 3-5 MB per Maps session that would otherwise cost $6-10 at $2.05/MB without a roaming plan.
Install offline language packs for French Guiana in Google Translate or Apple Translate. Camera translation works offline, so pointing your phone at a menu or sign does not use eSIM data. Download the pack on home WiFi. Offline translation covers common phrases, text input, and photo-to-text conversion.
Download entertainment before departure. Netflix, Spotify, and podcasts all support offline downloads. A 7-day trip to French Guiana needs 5-10 hours of offline content for flights, transit, and downtime. Download on home WiFi. Streaming over an eSIM consumes 700 MB per hour of video, draining your plan quickly.
Install ride-hailing apps for French Guiana before arrival. Create your account and add a payment method on home WiFi. The app download and account setup consume 50-100 MB that you do not want running through a carrier roaming connection.
Download an offline currency converter app with EUR (€) rates. XE and Currency apps both support offline mode after an initial rate download. The local currency in French Guiana is EUR. Pre-load the exchange rate on home WiFi so you can check prices without using cellular data at markets and shops.
Save booking confirmations, boarding passes, and hotel addresses as PDF files or screenshots on your device. Store them in the Files app or a dedicated folder. If your eSIM data runs out or you lose connectivity in French Guiana, offline documents keep your itinerary accessible. Email attachments consume 2-5 MB each to re-download.
Save 15/17/18/112 as French Guiana's emergency number in your contacts. Add your hotel address, embassy phone number, and travel insurance hotline. Store these as a contact card that works without internet access. Emergency calls work on any carrier network in French Guiana regardless of your eSIM or roaming status.

Messaging Alternatives

WhatsApp queues messages when offline and sends them the moment connectivity returns. Draft messages, take photos, and record voice notes in French Guiana without an active data connection. The app sends everything when your eSIM reconnects to Orange GF. WhatsApp is the standard across Western and Southern Europe. Telegram has growing adoption in Eastern Europe. iMessage is common among iPhone users but does not cross the Android divide. Download WhatsApp and Telegram before departure. Pre-save frequent contacts. Offline-drafted messages consume zero data until sent. An e SIM on Orange GF at $1.57 for 1GB provides the connection that flushes the queue. AT&T charges $10/day for the same queue-flush on the same Orange GF towers.

Bill Shock Prevention

AT&T

Open the myAT&T app or visit att.com/international before departure.
Check if International Day Pass ($10/day in French Guiana) is auto-enabled on your plan. If so, remove it under Account > International > Manage Day Pass.
Disable data roaming on your iPhone: Settings > Cellular > Cellular Data Options > Data Roaming OFF.
Disable data roaming on Android: Settings > Connections > Mobile Networks > Data Roaming OFF.
Install a French Guiana eSIM before boarding: 1GB on Orange GF from $1.57.
Set your eSIM as the primary data line: iPhone Settings > Cellular > Cellular Data > select eSIM line.
Turn off Background App Refresh for non-essential apps: Settings > General > Background App Refresh.
AT&T Day Pass resets at midnight US Eastern time, not GFT (UTC-3). A late-evening arrival in French Guiana can trigger two Day Pass charges in two hours.
After landing at the airport: verify data roaming is OFF on your AT&T line and ON for your eSIM line.
Check your AT&T account 48 hours after return. Dispute any charges within the first billing cycle. AT&T occasionally waives first-time roaming charges.
Total AT&T Day Pass cost for 7 days: $70. Total eSIM cost: $17.99 for 20GB. Savings: $52.01.

Verizon

Open the My Verizon app or visit verizon.com/travel before departure.
Check if TravelPass ($10/day, 2 GB high-speed cap in French Guiana) is active. Remove it under Plan > Travel > Remove TravelPass.
Verizon TravelPass auto-enrolls when your phone connects to Orange GF. The charge triggers before you clear customs at the airport.
Disable data roaming: iPhone Settings > Cellular > Cellular Data Options > Data Roaming OFF.
Android: Settings > Connections > Mobile Networks > Data Roaming OFF.
Install a French Guiana e-SIM before departure: 1GB on Orange GF from $1.57.
Verizon caps high-speed data at 2 GB per day on TravelPass. After the cap, speed drops to 600 Kbps for the rest of the day. The eSIM has no daily cap.
After landing at the airport: confirm your Verizon line shows "No Service" or "SOS Only." Your eSIM line should show Orange GF with signal bars.
Verify no TravelPass charges appear on your Verizon bill within 48 hours of return. Call 611 to dispute within the first billing cycle.
Total Verizon TravelPass cost for 7 days: $70. eSIM alternative: $17.99 for 20GB. Savings: $52.01.

T-Mobile

T-Mobile Magenta and Go5G include free international data in French Guiana, but speed is throttled to 256 Kbps.
At 256 Kbps: Google Maps takes 30+ seconds to load, ride-hailing apps time out, video calls fail, and photo uploads take 2-5 minutes each.
T-Mobile Go5G Plus adds 5 GB high-speed for $5/day. Go5G Next includes 15 GB/month at high speed. Check which plan you have in the T-Mobile app under Account > Plan Details.
Calls on T-Mobile cost $0.25/minute in French Guiana. Use WhatsApp or FaceTime calling over your eSIM data to avoid per-minute charges.
Install a French Guiana eSIM for full-speed data: 1GB on Orange GF at $1.57. Set the e SIM as your data line and keep T-Mobile for calls and texts.
T-Mobile's free 2G tier is useful for: text-only WhatsApp messages, basic email (no attachments), and low-bandwidth background sync. It is not useful for: Maps, photos, video, social media, or ride-hailing.
After your trip: check your T-Mobile bill for $0.25/minute call charges. Dispute within the first billing cycle if unexpected charges appear.

The Airport Roaming Trap in French Guiana

Your phone connects to Orange GF the moment the aircraft doors open at the airport. The immigration queue takes 20-60 minutes. During that wait, background apps sync email, check weather, and refresh notifications. AT&T's International Day Pass triggers on the first data byte. Verizon TravelPass auto-enrolls simultaneously. You have not opened a single app yet. The charge: $10 for AT&T, $10 for Verizon. Over 7 days: $70. Prevention: enable airplane mode before landing. Keep it on through customs. Install your eSIM on airport WiFi if not already installed. Activate the e SIM as your data line. Then disable airplane mode. Your phone connects to Orange GF through the eSIM at $1.57 for 1GB. No $10 trigger.

How to Avoid Roaming Charges in French Guiana

Three steps prevent roaming charges in French Guiana: disable carrier data roaming, install a travel eSIM, and connect to Orange GF.

Roaming charges in French Guiana are not optional — they activate automatically unless data roaming is disabled. The eSIM strategy works because it creates a separate data-only line on Orange GF that your US carrier cannot bill for.

Switch your phone to airplane mode before landing in French Guiana.
Turn airplane mode off, then enable only the eSIM for data.
Keep carrier data roaming disabled. WiFi Calling handles voice.
This prevents any accidental roaming charges from background apps.

An eSIM saves $52 compared to 7 days of carrier roaming in French Guiana ($17.99 vs $70).

Carrier Roaming vs eSIM in French Guiana

AT&T charges $10/day in French Guiana — $70 for 7 days.

Verizon TravelPass costs $10/day — $70 for the same trip.

T-Mobile offers free low-speed roaming but charges $5/day for high-speed in French Guiana.

Airalo provides 20GB on Orange GF for $17.99.

An eSIM saves up to $52 (74%) compared to carrier roaming plans.

Bill Shock Warning: French Guiana

! Bill shock

A 7-day trip to French Guiana with data roaming on costs $70 on most US carriers. An eSIM on Orange GF costs $17.99 for 20GB — saving $52.

Best eSIM options for French Guiana

eSIM alternatives

Best eSIM providers for French Guiana

Ranked by price, coverage, and reliability in French Guiana.

eSIM providers for French Guiana, verified June 2026
Provider	Rating	Countries	From	Best for	Actions
Airalo#1 Pick	4.3 out of 5 stars4.3	200+	$4.50/GB	Best Overall	Get Airalo →Review
Nomad	4.1 out of 5 stars4.1	112+	$3.00/GB	Best Budget	Get Nomad →Review
Saily	4.2 out of 5 stars4.2	150+	$3.99/GB	Best Privacy	Get Saily →Review
Holafly	4.3 out of 5 stars4.3	178+	$2.99/day	Best Unlimited	Get Holafly →Review
HelloRoam	4.4 out of 5 stars4.4	186+	from $3.50/GB	Coverage + Value	Get HelloRoam →Review

Prices verified June 2026By AvoidRoaming Guides

We earn a commission when you purchase through links on this page. It does not change our rankings or the price you pay.

Provider pick

Why Airalo for French Guiana

Trip cancellations happen. Airalo offers 14-day refund. AT&T's International Day Pass charges $10 the moment your phone touches Orange GF's network in French Guiana — no refund for days you leave early, no credit for data you did not use. If your 7-day trip shortens to 3 days, AT&T still charges for every day your phone connected. Airalo's 20GB plan at $17.99 provides a fixed allocation without per-day billing. Unused data does not generate additional charges. Review cancellation terms before purchasing any eSIM plan for French Guiana.

Networks

Tower coverage in French Guiana

Orange's towers serve millions of travelers in French Guiana each year. AT&T charges each of them $10 per day for the same signal an eSIM delivers at $17.99. The network infrastructure does not change between a roaming connection and an eSIM connection — Orange transmits the same data through the same towers either way. 5 eSIM providers listed here connect through Orange. Entry plans start at $1.57 for 1GB.

Mobile networks in French Guiana — eSIM-compatible carriers, June 2026
Operator	Types
Orange	5G

Network coverage data verified June 2026.

Privacy

Internet freedom in French Guiana

French Guiana places no restrictions on VPN usage. Travelers can run any VPN provider on Orange GF's network without interference. This matters because public WiFi varies in reliability — and every unsecured WiFi connection exposes banking credentials, email passwords, and payment details. An eSIM on Orange GF at $1.57 for 1GB provides a private cellular connection that is inherently more secure than public WiFi. Layer your VPN on top of the eSIM connection for maximum privacy. This combination eliminates both AT&T's $10/day roaming charge and the security risks of relying on hotel WiFi.

Pricing

eSIM cost breakdown for French Guiana

What a travel eSIM costs in French Guiana versus carrier roaming.

Two travelers in French Guiana for 7 days: AT&T charges $140. Two 20GB eSIMs cost $35.98. Four travelers: AT&T bills $280. Four eSIMs cost $71.96. Roaming charges scale linearly — every phone triggers the $10 daily fee independently. eSIM plans scale at the same low rate. A family of four saves $208.04 over 7 days on the same Orange GF network. Each eSIM connects independently to Orange GF — no shared data, no pooling limits.

Travel eSIM plan pricing for French Guiana — verified June 2026
Data	eSIM Price	Per GB
1GB	$1.57	$1.57
3GB	$2.88	$0.96
5GB	$5.68	$1.14
10GB	$9.34	$0.93
20GB	$17.99	$0.90
Unlimited / day	$1.82/day	—

Prices sourced from provider websites and updated weekly.

Pricing verified June 2026

Multi-country

Visiting more than just French Guiana?

AT&T charges $10/day per country. Crossing from French Guiana into Argentina, Bolivia, and Brazil resets that daily charge for each border. A South America trip through 3 countries costs $30/day in AT&T International Day Pass fees — $10 per country, per day. Regional eSIM bundles cover multiple South America countries under a single plan. One purchase, one activation, zero border penalties. Individual country eSIM rates: Argentina: $41.99 for 20GB; Bolivia: $118.62 for 20GB; Brazil: $35.63 for 20GB. A regional plan often costs less than two days of multi-country AT&T roaming. Check regional bundle availability before booking country-specific plans for multi-stop South America trips.

Avoid these

Mistakes that cost travelers in French Guiana

Forgot to disable roaming

Data roaming left on triggers AT&T's $10/day charge the moment your phone connects to Orange GF in French Guiana. One push notification activates the full daily charge. Disable it in Settings before boarding, not after landing.

Auto app updates left on

Automatic app updates consume hundreds of megabytes overnight. At $2.05/MB on Orange GF, two app updates can cost $400 or more. Disable automatic updates under App Store settings before traveling to French Guiana.

Relying solely on hotel WiFi

Hotel WiFi in French Guiana drops unexpectedly. Your phone falls back to Orange GF through your home SIM the moment WiFi cuts out, activating AT&T's $10/day charge automatically. An eSIM makes every cellular fallback cost-free.

Not checking eSIM compatibility

Some older and carrier-locked devices cannot install eSIMs. Verify your phone supports eSIM before purchasing a plan for French Guiana. Check Settings > Cellular > Add Cellular Plan on iPhone, or Settings > Connections > SIM Manager > Add eSIM on Android.

Opening Maps before eSIM activated

Opening Google Maps immediately after landing triggers a data connection before your eSIM activates. Your phone defaults to the home SIM's roaming connection on Orange GF. Wait for the eSIM line to show active in Settings before opening any app in French Guiana.

The bottom line

What the data says about roaming in French Guiana

AT&T charges $10 per day in French Guiana regardless of how much data you use. One megabyte or ten gigabytes — same $10 on Orange GF. An eSIM charges by the gigabyte: the 20GB plan costs $0.90/GB on Orange GF. Moderate users who consume 500 MB per day pay the full daily AT&T rate for data they barely use. An eSIM at $17.99 for 20GB matches your actual usage instead of charging a flat daily rate. Over 7 days, the per-GB approach saves $52.01 against AT&T's flat daily charge.

Before you fly

Pre-flight checklist for French Guiana

Disable data roaming: Settings > Cellular > Data Roaming OFF (do this before departure).

Install a French Guiana eSIM while on home WiFi — plans from $1.57 for 1GB on Orange GF.

Save 15/17/18/112 as French Guiana's emergency number in your contacts.

Pack a Type C/D/E power adapter for French Guiana.

Local currency is EUR (€).

Time zone: GFT (UTC-3). Adjust your phone clock on arrival.

Keep your home SIM active for calls and texts via WiFi Calling.

Common questions

The most common roaming questions for French Guiana, answered

How do I disable roaming when using dual SIM for French Guiana?

With dual SIM, you need to disable roaming on your home SIM specifically. On iPhone: Settings > Cellular > select your home SIM line > Data Roaming (off). Then set the eSIM as your primary data line under Cellular Data. On Android: Settings > SIM Manager > select home SIM > Data Roaming (off). The eSIM stays set to allow data. This prevents AT&T from charging $10/day while your French Guiana eSIM handles data through Orange GF. Both SIM lines stay active: home SIM for calls and texts, eSIM for data at $1.57 instead of carrier roaming rates.

Can background apps trigger roaming charges in French Guiana?

Yes, background apps are one of the most common sources of surprise roaming bills. With data roaming enabled and no day pass, AT&T charges $2.05/MB in French Guiana. Background App Refresh on iPhone syncs mail, news, and social apps every 15-30 minutes automatically, including at 3am while you sleep. A single overnight background sync session can accumulate $50-200 in charges without you opening your phone. Disable Background App Refresh before travel: Settings > General > Background App Refresh > Off. Then disable data roaming. An eSIM replaces carrier data entirely. Background syncs bill against the eSIM's flat-rate data at $1.57, not your home carrier's per-MB rate.

How do I check how much roaming data I used in French Guiana?

On iPhone: Settings > Cellular > scroll down to "Current Period Roaming" to see total roaming data consumed. On Android: Settings > Connections > Data Usage > Mobile Data Usage > select your SIM, then filter by roaming. Check this immediately after landing in French Guiana to catch charges early. AT&T also sends usage alerts at 50%, 75%, and 100% of Day Pass data limits. Log into the myAT&T or My Verizon app for itemized charges from Orange GF. If roaming data appeared, enable Airplane Mode, disable data roaming, and call your carrier within 48 hours. Prevent future charges with an eSIM at $1.57 for 1GB.

Is an eSIM safer than carrier roaming for French Guiana?

An eSIM gives you complete control over data spending in French Guiana. Carrier roaming charges start automatically when your phone connects to Orange GF. You cannot predict the final bill until it arrives. An eSIM at $17.99 for 20GB sets a fixed maximum cost. When the data runs out, it stops. No surprise charges, no auto-renewal, no per-MB billing. You can top up with additional data if needed. Carrier roaming has no spending cap by default. AT&T Day Pass caps data at 2 GB/day but charges $10 regardless of usage.

How much does roaming cost in French Guiana?

AT&T International Day Pass charges $10/day in French Guiana, totaling $70 for a 7-day trip. Verizon TravelPass costs the same $10/day. Without a day pass, AT&T pay-per-use rates reach $2.05/MB, so a 50 MB Google Maps session costs over $100. T-Mobile includes free international data but throttles to 256 Kbps, which is too slow for navigation or video calls. A travel eSIM connects to Orange GF starting at $1.57 for 1 GB with no daily activation fee and no per-MB overages.

Can I use WhatsApp and FaceTime with an eSIM in French Guiana?

Yes. WhatsApp, FaceTime, and all messaging apps work normally on an eSIM data connection in French Guiana. WhatsApp voice calls use 0.5-1 MB/minute. Video calls use 3-5 MB/minute. A 30-minute FaceTime video call consumes approximately 150 MB. With an eSIM on Orange GF starting at $1.57, these calls cost a fraction of carrier international calling rates ($1.00-3.00/minute). Your home number stays on your home SIM for regular SMS and calls.

Should I set up call forwarding before traveling to French Guiana?

Call forwarding sends all calls to another number (such as a Google Voice number), avoiding per-minute roaming charges on incoming calls. Set up before departure: iPhone dial *72 followed by the forwarding number. Android: Settings > Phone > Call Forwarding. Forward to a VoIP number that rings over data. This way, incoming calls arrive through your eSIM's data on Orange GF at $1.57 instead of your carrier's $1.00-1.29/minute roaming rate. Disable forwarding after returning home: dial *73 (iPhone/AT&T) or turn off in settings. Test forwarding at home before your trip to French Guiana.

Does a French Guiana eSIM work on multiple carriers?

Most travel eSIMs for French Guiana connect to Orange GF and Digicel as the primary network, with automatic fallback to secondary carriers if the primary signal is weak. Your phone selects the strongest available tower. This multi-carrier support means better coverage than a single-network physical SIM. When roaming with AT&T or Verizon, you are locked to their specific roaming partner. The eSIM's ability to connect to multiple French Guiana carriers provides wider coverage at $1.57/GB versus $10/day for limited carrier roaming.

How do I configure data roaming settings for French Guiana?

Complete setup before departure: (1) Disable Data Roaming on iPhone: Settings > Cellular > Data Roaming (off); Android: Settings > Connections > Mobile Networks > Data Roaming (off). (2) Turn on Airplane Mode before landing to block automatic carrier attachment to Orange GF. (3) Activate your pre-installed eSIM on local WiFi or after landing. (4) Set your home SIM to calls-only or data-off. Your home number stays active for calls and SMS; the eSIM handles all data without triggering your carrier's $10/day roaming rate.

Is there a data limit on carrier roaming plans for French Guiana?

AT&T Day Pass includes your domestic data plan while roaming, but throttles to 128 Kbps after hitting the fair-use threshold (typically 2 GB/day). Verizon TravelPass has the same structure. T-Mobile Go5G includes 5 GB of high-speed data per billing cycle for international use, then throttles to 256 Kbps. None of these plans provide truly unlimited high-speed data in French Guiana. An eSIM on Orange GF at $17.99 for 20GB gives you a clear data allocation at full speed. When it runs out, you can top up rather than being throttled to unusable speeds.

How do I document a roaming dispute for French Guiana?

Gather evidence before calling your carrier. Screenshot Settings > Cellular > Current Period Roaming (iPhone) or Settings > Data Usage (Android) to show the data volume used. Download your carrier app and export the itemized bill showing each charge from Orange GF in French Guiana. Save your travel itinerary and flight confirmation to prove your dates in French Guiana. Note the exact dollar amount disputed and the date it appeared on your account. Write down the name and employee ID of every carrier agent you speak with. This documentation package gives you a complete record if the dispute escalates to the FCC or a credit card chargeback.

Can my phone connect to French Guiana's carrier before I actually cross the border?

Yes. Carrier signals do not stop at the political border. Your phone detects Orange GF's towers up to 5-10 miles before you physically cross into French Guiana. If Orange GF's signal is stronger than your home carrier's at that point, your phone may attach and roaming charges begin before you cross. This is common near busy border crossings where carriers position towers to capture cross-border traffic. Turn on Airplane Mode at least 10 miles before the border. Disable data roaming in Settings before re-enabling cellular. Install an eSIM at $1.57 to prevent automatic carrier attachment entirely.

How do I avoid roaming charges on a cruise near French Guiana?

Turn off cellular data entirely while at sea. Cruise ships use satellite networks billed at $5-20/MB, which is 2-10x more expensive than standard international roaming. Your carrier's Day Pass does not cover maritime satellite networks. AT&T, Verizon, and T-Mobile all have exclusions for at-sea billing. Disable cellular data: iPhone Settings > Cellular > Cellular Data (off). Android: Settings > Network > Mobile Data (off). Use the ship's WiFi package for internet access at sea. Save your French Guiana eSIM at $1.57 for port days when you are ashore on Orange GF's terrestrial network.

How do I track my data usage to avoid roaming overages in French Guiana?

On iPhone, go to Settings > Cellular > scroll down to "Current Period" for total data used. Reset the counter before your trip: scroll to the bottom and tap "Reset Statistics." The counter tracks all data from that moment forward. Check it daily in French Guiana. "Current Period Roaming" shows only the data charged to your roaming connection on Orange GF. If you are using an eSIM, the eSIM line shows usage under its own section. Set a mental alert at 80% of your plan size. When you hit that threshold, switch to WiFi-only for heavy downloads.

If something goes wrong

Resolving eSIM connection problems in French Guiana

QR code not scanning (carrier lock)

If the QR code scan fails during installation, your phone may be carrier-locked to your home network. Contact your home carrier to confirm your device is unlocked before traveling to French Guiana. Carrier-locked phones cannot install eSIM profiles from any other provider.

Plan activated before landing

If you activated your French Guiana eSIM before landing, it may start consuming data before you arrive. Keep the eSIM profile toggled off in Settings until you land at the airport. Activate it only after clearing customs to avoid using data before your trip starts.

Dual-SIM confusion (set data line correctly)

After landing in French Guiana, verify that Settings shows your eSIM line — not your home SIM — as the active data line. Go to Settings > Cellular (iPhone) or SIM Manager (Android). If data routes through your home SIM, you will be charged AT&T roaming rates on Orange GF.

No signal after landing (toggle airplane mode)

If the eSIM shows no signal after landing at the airport, toggle airplane mode on and off. This forces your phone to re-register with Orange GF's nearest tower. Wait 30 seconds for the registration to complete before checking connectivity.

Data running out (top up vs second plan)

If your French Guiana eSIM data runs low, top up through your provider's app rather than activating your home SIM's roaming. Roaming top-up costs $10/day on Orange GF — a second eSIM top-up often costs less than half that for comparable data.

Quick reference