Avoid Roaming Charges in Reunion: Full Prevention Guide (2026)
To avoid roaming charges in Reunion, turn off data roaming in your phone settings and activate a travel eSIM on Orange RE.
AT&T, Verizon, and T-Mobile each charge differently for Reunion roaming. AT&T: $10/day. Verizon: $10/day with 2GB cap. T-Mobile: free but throttled to 256 Kbps. An eSIM on Orange RE gives full 5G speed for $18.43/10GB.
An eSIM saves $52 compared to 7 days of carrier roaming in Reunion ($18.43 vs $70).
Per-day roaming fees for Reunion
Your carrier charges the moment your phone connects to Orange RE in Reunion. These are the charges you are here to avoid.
AT&T International Day Pass
AT&T charges $10 per day, auto-triggered when your phone connects to Orange RE. Calendar-day billing resets at midnight Eastern, not local time. Without the pass: $2.05 per MB. A 7-day trip costs $70.
Verizon TravelPass
Verizon charges $10 per day with a 2GB daily high-speed cap. Auto-enrollment is on by default. The same Orange RE towers, the same $10 daily charge. Without TravelPass: $2.05 per MB.
T-Mobile Magenta International Data
T-Mobile includes free data at 256 Kbps in 215+ countries. That speed barely loads a map tile. High-speed add-on costs $5-15 per day.
UK Carrier Roaming Rates
EE charges a daily roaming fee post-Brexit. Vodafone charges through Roaming Plus. Both apply fair-use data caps. UK travelers to Reunion face these charges on top of any roaming agreement changes since 2021.
Per-MB Worst Case
$2.05 per MB. One Google Maps session: $20-30. One hour of normal use: $205. One iCloud backup overnight: $1,025-2,099.
Without any plan, AT&T charges $2.05 per MB in Reunion (source: AT&T International Roaming rates, att.com/international, verified June 2026). One hour of normal phone use — Maps, a few emails, background app refresh — consumes roughly 100 MB. That is $205 in a single hour. Over 7 days of moderate use, the bill can reach $22. Even with the $10/day International Day Pass, the cost is $70. A 10GB eSIM on Orange RE covers the same 7 days for $18.43 — saving $51.57.
How to set up your eSIM for Reunion
Before Your Flight
- Disable data roaming.iPhone: Settings > Cellular > Cellular Data Options > Data Roaming OFF. Android: Settings > Network & Internet > Mobile Network > Data Roaming OFF.
- Turn off automatic app updates.iOS: Settings > App Store > App Updates OFF. Android: Play Store > Settings > Network preferences > Auto-update over WiFi only.
- Disable cloud backup over cellular. Prevent iCloud or Google from syncing photos and files on mobile data.
- Download offline maps for Reunion. Open Google Maps or Apple Maps and save Reunion for offline use while on home WiFi.
At the Airport
- Switch to airplane mode before boarding.
- Keep airplane mode on during layovers. Each country your phone connects to triggers a separate $10/day charge.
- If your eSIM is already installed, do not activate it until you reach Reunion.
After Landing in Reunion
- Turn off airplane mode.
- Verify data roaming is still OFF on your home SIM.
- Activate your eSIM as the data line. Enable data roaming on the eSIM line only.
- Wait 2-3 minutes for Orange RE network registration. Check the status bar for the carrier name.
Daily Roaming Hygiene
- Check data usage periodically in Settings.
- Keep your home SIM data roaming OFF at all times.
- Watch for WiFi-to-cellular handoff. Walking out of hotel WiFi range triggers a carrier connection. One push notification on your home SIM costs $10.
eSIM Alternative for Reunion
Why an eSIM Replaces Roaming
An eSIM connects to Orange RE at 5G speed. Same towers. Same coverage. No daily charge. No per-MB billing. Savings of 85-95% compared to carrier roaming.
Plan Options for Reunion
| Tier | Price | Per GB |
|---|---|---|
| 1GB | $3.67 | $3.67/GB |
| 3GB | $5.48 | $1.83/GB |
| 5GB | $11.32 | $2.26/GB |
| 10GB | $18.43 | $1.84/GB |
Unlimited Daily Plans
For heavy data users, digital nomads, or extended stays, unlimited daily plans remove all data anxiety.
| Days | Price | Per Day |
|---|---|---|
| 1 days | $3.10 | $3.10/day |
| 3 days | $8.91 | $2.97/day |
| 7 days | $20.80 | $2.97/day |
| 14 days | $40.25 | $2.88/day |
| 30 days | $79.46 | $2.65/day |
Recommended Provider
Airalo is the recommended eSIM provider for Reunion. Best Overall with a 4.25/5 rating across 200+ countries. Compare all eSIM providers for Reunion.
Airalo leads on price for Reunion with 10GB at $18.43 on Orange RE's network. AT&T International Day Pass charges $10/day for the same Orange RE towers — $70 over 7 days. Airalo connects through identical infrastructure at $1.83/GB. The savings come from removing the carrier middleman. Your home carrier negotiates roaming agreements that add markup at every layer. Airalo contracts directly with Orange RE, passing the lower rate to you. Plans start at $3.67 for 1GB with no daily activation fee.
Hotspots and connectivity in Reunion
WiFi Security Risks
Public WiFi in Reunion carries risks: unencrypted networks, man-in-the-middle attacks, and credential theft. Use a VPN when connecting to hotel, airport, or cafe WiFi.
WiFi-to-Cellular Handoff Trap
Walking out of WiFi range triggers your phone to connect to Orange REover cellular. One push notification on your home SIM costs $10 with AT&T. Prevention: keep cellular data OFF on your home SIM or use an eSIM as your data line.
WiFi Calling Setup
Keep your home phone number active for calls and texts via WiFi Calling. iPhone: Settings > Phone > WiFi Calling > ON. Android: Settings > Network > WiFi Calling > ON. Works alongside your eSIM data connection. No per-minute carrier roaming charges.
Offline Preparation for Reunion
- Download Reunion 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 Reunion 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 Reunion 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 Reunion 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 Reunion 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 Reunion, offline documents keep your itinerary accessible. Email attachments consume 2-5 MB each to re-download.
- Save 15/17/18/112 as Reunion'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 Reunion regardless of your eSIM or roaming status.
Messaging Without Roaming in Reunion
WhatsApp queues messages when offline and sends them the moment connectivity returns. Draft messages, take photos, and record voice notes in Reunion without an active data connection. The app sends everything when your eSIM reconnects to Orange RE. 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 RE at $3.67 for 1GB provides the connection that flushes the queue. AT&T charges $10/day for the same queue-flush on the same Orange RE towers.
The Airport Roaming Trap in Reunion
Your phone connects to Orange RE 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 RE through the eSIM at $3.67 for 1GB. No $10 trigger.
Bill Shock Prevention Checklist for Reunion
AT&T
- Open the myAT&T app or visit att.com/international before departure.
- Check if International Day Pass ($10/day in Reunion) 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 Reunion eSIM before boarding: 1GB on Orange RE from $3.67.
- 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 RET (UTC+4). A late-evening arrival in Reunion 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: $18.43 for 10GB. Savings: $51.57.
Verizon
- Open the My Verizon app or visit verizon.com/travel before departure.
- Check if TravelPass ($10/day, 2 GB high-speed cap in Reunion) is active. Remove it under Plan > Travel > Remove TravelPass.
- Verizon TravelPass auto-enrolls when your phone connects to Orange RE. 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 Reunion e-SIM before departure: 1GB on Orange RE from $3.67.
- 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 RE 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: $18.43 for 10GB. Savings: $51.57.
T-Mobile
- T-Mobile Magenta and Go5G include free international data in Reunion, 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 Reunion. Use WhatsApp or FaceTime calling over your eSIM data to avoid per-minute charges.
- Install a Reunion eSIM for full-speed data: 1GB on Orange RE at $3.67. 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.
How to Avoid Roaming Charges in Reunion
To avoid roaming charges in Reunion, turn off data roaming in your phone settings and activate a travel eSIM on Orange RE.
AT&T, Verizon, and T-Mobile each charge differently for Reunion roaming. AT&T: $10/day. Verizon: $10/day with 2GB cap. T-Mobile: free but throttled to 256 Kbps. An eSIM on Orange RE gives full 5G speed for $18.43/10GB.
- Go to Settings and disable Data Roaming on your carrier's SIM.
- Buy a 10GB eSIM for Reunion ($18.43 on Orange RE).
- Add the eSIM: Settings > Cellular > Add eSIM > scan QR code.
- Select the eSIM as mobile data. Your home number stays active for calls.
An eSIM saves $52 compared to 7 days of carrier roaming in Reunion ($18.43 vs $70).
Step-by-Step Avoidance Plan for Reunion
Step 1: Buy an eSIM for Reunion before your trip ($18.43 for 10GB). Step 2: Install it via Settings on your phone — no physical SIM needed. Step 3: Turn off carrier data roaming to block surprise charges. Step 4: Land in Reunion, enable the eSIM, and connect to Orange RE. Result: 5G speeds, $52 saved vs $10/day roaming.
Accidental Roaming Charges in Reunion
A 7-day trip to Reunion with data roaming on costs $70 on most US carriers. An eSIM on Orange RE costs $18.43 for 10GB — saving $52.
Emergency Contacts and Safety
Emergency Number
The emergency number in Reunion is 15/17/18/112. Save this in your phone contacts before departure. Emergency calls work without a data plan. Voice roaming is separate from data roaming.
Offline Maps and Translation
Download Google Maps or Apple Maps offline for Reunion. Download the Google Translate language pack if Reunion is a non-English speaking country. Both work without any data connection.
Embassy and Consulate Access
Download your embassy or consulate contact information before departure. Save as offline contacts. If you have an eSIM installed, embassy websites and phone numbers are accessible through your data connection.
Reunion-Specific Considerations
Country-Specific Quirks
- French department — EU roaming applies
Your pre-trip checklist for Reunion
Disable data roaming: Settings > Cellular > Data Roaming OFF (do this before departure).
Install a Reunion eSIM while on home WiFi — plans from $3.67 for 1GB on Orange RE.
Save 15/17/18/112 as Reunion's emergency number in your contacts.
Pack a Type C/E power adapter for Reunion.
Local currency is EUR (€).
Time zone: RET (UTC+4). Adjust your phone clock on arrival.
Keep your home SIM active for calls and texts via WiFi Calling.
Roaming FAQ for Reunion, answered
How do I disable roaming when using dual SIM for Reunion?
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 Reunion eSIM handles data through Orange RE. Both SIM lines stay active: home SIM for calls and texts, eSIM for data at $3.67 instead of carrier roaming rates.
Can background apps trigger roaming charges in Reunion?
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 Reunion. 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 $3.67, not your home carrier's per-MB rate.
How do I check how much roaming data I used in Reunion?
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 Reunion 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 RE. If roaming data appeared, enable Airplane Mode, disable data roaming, and call your carrier within 48 hours. Prevent future charges with an eSIM at $3.67 for 1GB.
Does an eSIM get the same coverage as roaming in Reunion?
Yes. An eSIM connects to Orange RE, the same network infrastructure AT&T and Verizon use for roaming in Reunion. You get identical towers, identical coverage area, and the same 5G speeds. The only difference is billing: your carrier charges $10/day or $2.05/MB for roaming access to these towers, while the eSIM charges $1.83/GB for the same connection. There is no coverage penalty for using an eSIM. In many cases, eSIM data speeds are faster because carrier roaming agreements sometimes throttle international users to lower priority.
How much does roaming cost for a family traveling to Reunion?
AT&T and Verizon charge Day Pass fees per line, not per account. A family of four on AT&T Day Pass pays $40/day in Reunion, totaling $280 for a 7-day trip. Children's phones are particularly risky because apps and games download updates in the background. One child's iPad streaming a YouTube video at $2.05/MB racks up $400+ in under an hour. Four eSIMs on Orange RE cost roughly $21.92 total for 3 GB each. Share one eSIM's hotspot to cover all devices and cut costs further.
Should I use WiFi Calling or an eSIM for calls in Reunion?
Use both. WiFi Calling routes calls through your home carrier over WiFi, using your home minutes. It is free on most US carrier plans. The limitation: WiFi Calling only works when connected to WiFi, not mobile data. An eSIM on Orange RE at $3.67 gives you mobile data everywhere. Use WhatsApp or FaceTime over eSIM data for calls when WiFi is unavailable. Enable WiFi Calling before departure: iPhone Settings > Phone > WiFi Calling. When on hotel WiFi, calls route free through your home carrier. When on mobile data, use WhatsApp calls through the eSIM.
What happens to my home number while using an eSIM in Reunion?
Your home number stays fully active. With dual-SIM setup, your home SIM keeps your phone number for calls and texts while the Reunion eSIM handles data on Orange RE. You receive calls on your home number. SMS messages arrive normally. Data routes through the eSIM at $3.67 instead of your carrier's $10/day roaming. On iPhone, set Cellular Data to the eSIM line and Default Voice to your home SIM. Both lines work simultaneously. Your home number is not affected by the eSIM installation and remains active throughout your entire trip.
Does a Reunion eSIM work on multiple carriers?
Most travel eSIMs for Reunion connect to Orange RE and SFR 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 Reunion carriers provides wider coverage at $3.67/GB versus $10/day for limited carrier roaming.
How do I configure data roaming settings for Reunion?
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 RE. (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.
Are carrier add-ons OK for a 1-day layover in Reunion?
For a single day in Reunion, AT&T Day Pass at $10 is comparable to a basic eSIM. However, the Day Pass auto-activates from a push notification and you cannot control the start time. If your flight lands at 11pm and a notification triggers the pass, you pay $10 for one hour of the first day, then another $10 the next morning. An eSIM at $3.67 for 1 GB covers the entire layover with no auto-activation risk. For layovers over 6 hours, the eSIM wins. For 2-hour layovers where you stay on airport WiFi, neither is necessary.
Can my phone connect to Reunion's carrier before I actually cross the border?
Yes. Carrier signals do not stop at the political border. Your phone detects Orange RE's towers up to 5-10 miles before you physically cross into Reunion. If Orange RE'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 $3.67 to prevent automatic carrier attachment entirely.
How do I fully disable cellular data on a cruise near Reunion?
The safest approach: enable Airplane Mode before the ship leaves any port near Reunion. Then manually re-enable WiFi only (Airplane Mode stays on, just WiFi toggled back). This disconnects from all cellular networks including maritime satellite, while keeping ship internet access. On iPhone, swipe to Control Center, tap Airplane Mode (orange icon), then tap the WiFi icon to re-enable it. On Android, the same approach works through Quick Settings. Verify your cellular status: no carrier name or bars should appear in the status bar. When your port stop arrives, disable Airplane Mode and your eSIM at $3.67 connects to Orange RE on the Reunion shore network.
How much data can I save by using offline maps in Reunion?
Offline maps eliminate the largest single source of navigation data use. Google Maps online navigation in Reunion consumes 5-10 MB/hour of active use. Downloaded offline maps reduce that to near zero for turn-by-turn directions. Download your Reunion region before departure over home WiFi: Google Maps app > search for Reunion > three dots > Download Offline Map. Apple Maps also supports offline downloads in iOS 17+. A typical Reunion offline map is 100-500 MB and covers the entire country for navigation. This saves 100-500 MB over a 7-day trip on Orange RE, reducing how much of your eSIM plan at $3.67 you consume on maps alone.
Will I get charged if my phone is in my pocket in Reunion?
Yes. Your phone does not need to be in your hand to trigger roaming charges in Reunion. Background processes sync email, update weather, refresh social feeds, and ping location services automatically through Orange RE. AT&T International Day Pass activates the moment any data crosses the connection, even a single push notification received while your phone sits in your pocket. That costs $10 for the calendar day. Disable data roaming before landing: Settings > Cellular > Data Roaming (off). Without this step, your phone generates charges from Orange RE without you touching it. An eSIM at $3.67 handles all background syncs at flat-rate pricing.
Stop paying roaming charges in Reunion.
A 1GB eSIM costs $3.67. AT&T charges $70 for the same 7 days. Same Orange RE towers.
Former consumer pricing analyst at J.D. Power covering wireless carrier satisfaction surveys
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