Save on Roaming in Cambodia: Practical Tips for 2026
Three tips for Cambodia: turn off roaming, install an eSIM before departure, and connect to Cellcard on arrival. 20GB costs $28.80 — 59% less than carrier roaming.
Before You Land
Pick the Right Data Plan
Match your plan to your trip length. A 1GB eSIM covers light use for 7 days at $3.99. For heavy use, unlimited daily plans start at $3.51/day.
| Trip Length | Recommended | Cost |
|---|---|---|
| 3-5 days | 1GB | $3.99 |
| 3-5 days | 3GB | $7.99 |
| 7-10 days | 5GB | $11.49 |
| 7-10 days | 10GB | $18.90 |
| 14+ days | 20GB | $28.80 |
Compare all eSIM providers for Cambodia→
Phone Preparation Checklist
- Install your eSIM over home WiFi
- Download offline maps for Cambodia
- Enable WiFi Calling on your phone
- Turn off automatic app updates over cellular
- Charge a portable battery pack
- Save Cambodia's emergency number: 117/118/119
Download These Apps First
- Offline maps: Google Maps or Maps.me for Cambodia
- Translation: Google Translate language pack
- Currency: converter app for KHR
Know Your Carrier's Rates
AT&T: $10/day (auto-triggered). Verizon: $10/day (2GB cap). T-Mobile: free at 256 Kbps (too slow for maps). Without any plan: $2.05/MB. Know these numbers so you can calculate what you are saving.
At the Airport
When to Activate Your eSIM
After clearing customs at Phnom Penh (PNH) / Siem Reap (SAI), before leaving the terminal. Do not enable your eSIM during layovers. Each country your phone connects to triggers a separate carrier charge. Your eSIM plan timer starts at first network connection.
Airport SIM Counter vs eSIM
Phnom Penh (PNH) / Siem Reap (SAI) has SIM card kiosks. Typical cost: $2-5 for 5-20GB / 28 days. Your eSIM is already installed. No queue, no language barrier, no passport handover.
Airport SIM cards in Cambodia cost $2-5 for 5-20GB / 28 days at Phnom Penh (PNH) / Siem Reap (SAI). The same data volume on an eSIM runs $28.80 for 20GB on Cellcard. The airport markup exists because the counter has rent, staff, and foot traffic costs baked into the price. You pay for the real estate, not the signal. Both the airport SIM and the eSIM connect to Cellcard's towers — identical infrastructure, significant price difference. Install the eSIM at home, skip the counter markup entirely, and arrive at Phnom Penh (PNH) / Siem Reap (SAI) with 20GB already active on Cellcard.
Airport WiFi
WiFi at Phnom Penh (PNH) / Siem Reap (SAI) is available for eSIM QR code installation if you did not install at home. Speed and reliability vary. Free tiers are typically time-limited.
First Connection Test
- Open your browser and load any page to confirm data works
- Check the status bar for Cellcard carrier name
- Verify your home SIM still receives calls
- Run a speed test at fast.com
iPhone Roaming Settings for Cambodia
iPhone 14 and newer models sold in the US are eSIM-only. Both SIM slots are digital. Open Settings > Cellular to see your installed lines. Tap your home carrier line (AT&T, Verizon, or T-Mobile). Turn off Data Roaming under Cellular Data Options. This one toggle prevents the $10/day charge on Cellcard in Cambodia. Next, install a Cambodia travel e SIM: Settings > Cellular > Add eSIM. Scan the QR code from your eSIM provider or use the provider's app. After installation, go to Settings > Cellular > Cellular Data and select the travel eSIM as your data line. Your home carrier stays active for calls and texts. The eSIM handles all data on Cellcard at $3.99 for 1GB. Over 7 days, this saves $66.01 versus AT&T Day Pass.
Samsung Roaming Settings for Cambodia
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 Phnom Penh (PNH) / Siem Reap (SAI). 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 Cellcard on your eSIM at $3.99 for 1GB.
Pixel Roaming Settings for Cambodia
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 Cellcard in Cambodia. 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 Cellcard at $3.99 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 for Cambodia
Dual-SIM configuration for Cambodia: home SIM for calls and texts via WiFi Calling, eSIM for data on Cellcard. VoIP services (WhatsApp calls, FaceTime, Zoom) work without restrictions over the eSIM connection. This means you have three calling options: WiFi Calling on your home SIM (domestic rates), VoIP apps over eSIM data (free), and traditional carrier calls (avoid: $1-3/minute). Set your home SIM's Data Roaming to OFF. Set the e SIM as your data line with roaming ON. Enable WiFi Calling on your home SIM. All three calling methods work. AT&T's $10/day charge does not trigger because data roaming is disabled on the home line. The eSIM costs $3.99 for 1GB on Cellcard.
WiFi Calling Setup for Cambodia
WiFi Calling lets you make and receive calls on your home US number without carrier roaming charges while in Cambodia. iPhone: Settings > Phone > WiFi Calling > toggle ON. Samsung: Settings > Connections > WiFi Calling > toggle ON. Pixel: Settings > Network & Internet > Calls & SMS > WiFi Calling ON. Enable WiFi Calling before departure while connected to your home WiFi. Verify it works by making a test call with WiFi on and cellular off. In Cambodia, WiFi Calling routes voice through hotel WiFi at domestic rates. No $1-3/minute international charge. No $10/day carrier fee. Your eSIM on Cellcard at $3.99 for 1GB handles data. WiFi Calling handles voice. Together, they replace carrier roaming entirely.
Background App Settings for Cambodia
Background App Refresh (iPhone)
Settings > General > Background App Refresh
Disable globally or per-app. Background refresh on Cellcard in Cambodia consumes 50-200 MB/day without you opening any app. At $2.05/MB without a roaming plan, that is $102-410/day in silent charges. With an eSIM, this data counts against your plan. Disable for social media, news, and shopping apps. Keep enabled for Maps and messaging.
Mail Fetch vs Push (iPhone)
Settings > Mail > Accounts > Fetch New Data
Switch from Push to Fetch (every 30 minutes or Manual). Push email checks Cellcard's network every 15-60 seconds in Cambodia. At ICT (UTC+7) timezone, overnight pushes sync while US colleagues send daytime emails. Fetch reduces email data by 60-80% compared to Push. Each push check: 0.5-2 MB.
iCloud Photos cellular upload (iPhone)
Settings > Photos > Cellular Data OFF
iCloud uploads every photo to the cloud over cellular by default. After a day of sightseeing in Cambodia, 50-200 photos queue for upload overnight. Each high-res photo: 3-8 MB. Total overnight upload on Cellcard: 150-1,600 MB. At $2.05/MB: $307-3,280 without a plan. With an eSIM, this drains your data balance. Upload photos manually on hotel WiFi instead.
Data Saver (One UI) (Samsung)
Settings > Connections > Data Usage > Data Saver ON
Samsung Data Saver restricts background data for all apps except whitelisted ones. Whitelist Maps, your messaging app, and your eSIM provider app. Block background data for social media, streaming, and news. This reduces background consumption on Cellcard in Cambodia by 30-50%. Your eSIM data lasts longer without manual intervention.
Auto-sync toggle (Samsung)
Settings > Accounts and Backup > Manage Accounts > Auto Sync Data OFF
Auto-sync pushes email, contacts, calendar, and app data over Cellcard in Cambodia. Disabling auto-sync stops all account synchronization on cellular. Sync manually on hotel WiFi. Re-enable auto-sync when you return home. This single toggle prevents the largest category of background data usage on Samsung devices.
Adaptive Battery and data (Pixel)
Settings > Battery > Adaptive Battery ON
Pixel's Adaptive Battery restricts background activity for infrequently used apps. In Cambodia, this reduces unnecessary data consumption on Cellcard without manual app-by-app management. Keep Adaptive Battery ON. It learns your usage pattern and limits background data for apps you rarely open while traveling.
Set data warning and limit (Pixel)
Settings > Network & Internet > SIMs > eSIM > Data Warning & Limit
Set a data warning at 80% of your eSIM plan and a hard limit at 95%. Pixel shows a notification when you approach the warning threshold. The hard limit stops cellular data before you exceed your plan in Cambodia. This prevents overage charges on prepaid eSIM plans and unexpected top-up costs on Cellcard.
Automatic App Downloads (iPhone)
Settings > App Store > App Downloads: toggle OFF for cellular
A single app update runs 50-500 MB. At $2.05/MB on Cellcard in Cambodia: $102-1,025 per update without a plan. With an eSIM, one update can consume 10-50% of a small data plan. Disable automatic downloads. Update apps manually on hotel WiFi only. Check for updates before departure so critical apps are current.
Airplane Mode Sequence for Cambodia
Landing sequence at Phnom Penh (PNH) / Siem Reap (SAI): keep Airplane Mode ON when the plane touches down. Step 1 (while taxiing): open Settings, confirm Data Roaming is OFF on your home SIM. Step 2 (at the gate): turn on WiFi while still in Airplane Mode. Connect to airport WiFi if you need to verify your eSIM profile. Step 3 (after clearing customs): disable Airplane Mode. Your phone finds Cellcard. Data routes through your eSIM at $3.99 for 1GB. AT&T never connects. The entire sequence takes 60 seconds. The alternative: forget these steps, connect to Cellcard through AT&T, and pay $10 before you reach baggage claim.
Data Usage Monitoring in Cambodia
Reset your iPhone data counter before activating your eSIM in Cambodia. Settings > Cellular > scroll to the bottom > Reset Cellular Statistics. This gives you a clean baseline for tracking eSIM usage on Cellcard. A 20GB plan over 7 days means a daily budget of 2.9 GB. Check Settings > Cellular > Cellular Data Usage daily to stay under budget. iOS does not reset automatically. Set a daily alarm to check consumption. If you hit 80% of your plan with days remaining, enable Low Data Mode and offload streaming to hotel WiFi. Top up through your eSIM provider's app if the balance drops to zero.
Cambodia-Specific Device Settings
Switch email from Push to Fetch in Cambodia. The ICT (UTC+7) timezone means US business hours overlap with your nighttime. Push email checks Cellcard's network every 15-60 seconds while you sleep. Each check costs 0.5-2 MB at $2.05/MB without a plan. iPhone: Settings > Mail > Accounts > Fetch New Data > switch to Every 30 Minutes or Manually. Android: open your email app Settings > Sync frequency > Every 30 Minutes or Manual.
Physical SIM cards in Cambodia require passport registration. Passport required An eSIM bypasses this requirement entirely. No store visit, no passport scan, no activation wait. Install before departure on home WiFi. The e-SIM connects to Cellcard after landing without any registration step. This is the single largest convenience advantage of an eSIM in countries with SIM registration requirements.
Turn Off Roaming: Cambodia Device Guide
iPhone
For iPhone users traveling to Cambodia: go to Settings > Cellular > Cellular Data Options. The Data Roaming toggle prevents $10/day carrier charges.
The Data Roaming toggle on iPhone applies to your primary cellular plan. If you add a travel eSIM for Cambodia, that eSIM's data connection is not affected by the toggle. You control each plan separately.
Samsung
To turn off roaming on Samsung before visiting Cambodia, go to Settings > Connections > Mobile Networks and toggle Data Roaming off.
With Data Roaming off, your Samsung phone blocks carrier billing in Cambodia. For mobile data, use SIM Manager to add a travel eSIM: Settings > Connections > SIM Manager > Add eSIM. Choose 20GB on Cellcard for $28.80.
Pixel
The Pixel roaming toggle is at Settings > Network & Internet > SIMs. Select your carrier SIM and disable Roaming before traveling to Cambodia.
After disabling Roaming on Pixel, enable Data Saver in Settings > Network & Internet > Data Saver. This restricts background data usage and stretches your eSIM allowance during your 7-day trip to Cambodia.
Getting Data in Cambodia
Best Way to Get Data
The best way to get data in Cambodia is a travel eSIM on Cellcard — 20GB for $28.80, activated before you land.
Local SIMs require passport registration at the counter. An eSIM skips the counter entirely. You buy it online, scan a QR code, and connect to Cellcard's 4G LTE network. The 20GB plan costs $28.80 and lasts your entire 7-day trip.
- Check that your phone supports eSIM (iPhone XS+, Samsung Galaxy S21+, Pixel 3+).
- Buy a Cambodia eSIM: 20GB on Cellcard for $28.80.
- Scan the QR code: Settings > Cellular > Add eSIM (iPhone) or SIM Manager (Samsung).
- Disable carrier data roaming to prevent simultaneous charges.
- Land in Cambodia with data already active on Cellcard.
An eSIM costs $28.80 vs carrier roaming at $70 or airport SIM at $2-5 for 5-20GB / 28 days+.
Do You Need an eSIM?
You do not strictly need an eSIM for Cambodia, but it is the cheapest way to avoid $10/day carrier roaming charges.
WiFi in Cambodia is good. Hotels and cafes often have WiFi, but you lose connectivity between hotspots. Maps, ride-hailing, and translation apps need constant data. An eSIM on Cellcard fills those gaps for $28.80/20GB.
With an eSIM, a 7-day trip to Cambodia costs $28.80 for data. Carrier roaming costs $70.
Top Roaming Tip for Cambodia
Three tips for Cambodia: turn off roaming, install an eSIM before departure, and connect to Cellcard on arrival. 20GB costs $28.80 — 59% less than carrier roaming.
During Your Stay
Stretch Your Data
- Use WiFi for downloads and streaming
- Keep video quality at 480p on cellular
- Disable auto-play on social media feeds
- Use offline maps for navigation
- Compress photos before uploading
WiFi Hunting in Cambodia
WiFi availability: good. Hotels, chain cafes, and libraries are reliable WiFi sources. Coworking spaces offer the fastest connections.
Tethering and Hotspot
Share your eSIM data with travel companions via Personal Hotspot. Most eSIM providers allow tethering. Holafly supports it on all plans. Airalo supports it on most plans. Battery drains faster with hotspot enabled.
Top Up If You Run Out
Buy more data through the provider app. Or purchase a second eSIM. Switch to unlimited daily at $3.51/day for worry-free data. eSIM installation refresher →
How travelers accidentally trigger roaming in Cambodia
The Push Notification Trap
One push notification triggers AT&T's $10 daily charge. Weather widgets, email sync, WhatsApp pings. The charge resets at midnight Eastern, not Cambodia local time.
The WiFi Drop Trap
Walking out of hotel WiFi range triggers a carrier connection on Cellcard. One webpage load on your home SIM costs $10. Keep home SIM data roaming OFF.
The Background Sync Trap
iCloud backup overnight at per-MB rates: $1,025-2,099. A single app update (200 MB): $410. Photo sync and email attachment downloads add up fast. Disable all background sync on your home SIM before departure.
The Departure Day Trap
Carrier charges apply on departure day. Your phone connects to Cellcard at Phnom Penh (PNH) / Siem Reap (SAI) during check-in, triggering an extra $10 charge. Disable roaming on your home SIM before leaving your hotel.
The Transit Layover Trap
Each country layover triggers a separate $10/day charge. A flight with one layover means two countries, two charges. Keep airplane mode on during all layovers.
More Mistakes to Avoid
WiFi Assist left on
iOS WiFi Assist automatically switches to cellular when hotel WiFi weakens. In Cambodia, this routes data through your home SIM on Cellcard, triggering AT&T's $10/day charge mid-session. Disable WiFi Assist under Settings > Cellular before departure.
iCloud backup over cellular
iCloud backs up overnight using any available data connection. A 500 MB backup at $2.05/MB costs over $1,000 on Cellcard in Cambodia. Disable iCloud backup on cellular in Settings > Cellular before landing.
Day pass midnight reset misunderstood
AT&T's $10/day pass resets at midnight ICT (UTC+7) time — not local time in Cambodia. Landing at 10pm local time can trigger two separate $10 charges before you sleep. An eSIM on Cellcard at $3.99 has no midnight reset.
Money-Saving Tricks
eSIM Stacking
Visiting multiple countries? Buy a regional eSIM instead of per-country plans. Airalo offers Asialink, Eurolink, and other regional options. Delete expired profiles to free eSIM slots on your phone.
WiFi Calling for Free Voice
Use WiFi Calling on your home number for free inbound and outbound calls. iPhone: Settings > Phone > WiFi Calling. Android: Settings > Network > WiFi Calling. Works alongside your eSIM data. No per-minute carrier roaming charges.
Offline Everything
Download before departure: maps, translation packs, entertainment (Netflix and Spotify offline mode), boarding passes, and hotel confirmations. This reduces daily data usage from 1.5 GB to under 500 MB.
Family and Group Savings
4 phones × $10/day × 7 days = $280 carrier cost. 4 eSIMs at $3.99 each = $15.96. Savings: $264.04. Or share one eSIM via hotspot for even more savings.
Your roaming questions about Cambodia roaming tips
How do I disable roaming when using dual SIM for Cambodia?
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 Cambodia eSIM handles data through Cellcard. Both SIM lines stay active: home SIM for calls and texts, eSIM for data at $3.99 instead of carrier roaming rates.
How much can background apps cost while roaming in Cambodia?
A typical smartphone performs 15 background syncs per hour, each transferring 3-5 MB. That is 45-75 MB/hour in invisible data usage. At AT&T's $2.05/MB roaming rate on Cellcard, 8 hours of sleeping with roaming enabled costs $738-1,230. Even with AT&T Day Pass ($10/day), data caps at 2 GB can trigger overage throttling. Common background consumers: iCloud sync (50 MB/day), Google Drive (30 MB/day), email accounts (20 MB/day), push notifications (10 MB/day), and app updates (100+ MB when queued). Disable all background activity before arriving in Cambodia or install an eSIM at $3.99 and let apps sync at flat-rate pricing.
What happens if I forget to turn off roaming in Cambodia?
Your phone connects to Cellcard and AT&T charges $2.05/MB without a plan. A single 50 MB background sync costs over $100. With AT&T International Day Pass, you pay $10 the moment any data is used, even a push notification. Act immediately: turn on Airplane Mode, go to Settings > Cellular > Cellular Data Options > Data Roaming and switch it off, then disable Airplane Mode. Your home SIM resumes voice and SMS without data. Install an eSIM ($3.99 for 1GB on Cellcard) to restore data access. Call your carrier within 48 hours because AT&T and Verizon both waive first-time roaming overcharges if reported in the same billing cycle.
What is the cheapest way to avoid roaming charges in Cambodia?
A prepaid eSIM is the most cost-effective way to avoid roaming charges in Cambodia. The best per-GB rate is the 20GB plan at $28.80 total, which works out to $1.44/GB on Cellcard. Disable data roaming on your home SIM before departure and install the eSIM as your data line. Your home SIM keeps your number active for calls and texts. The eSIM handles all data at flat-rate pricing with no per-day activation fees and no per-MB overages.
How much does roaming cost in Cambodia?
AT&T International Day Pass charges $10/day in Cambodia, 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 Cellcard starting at $3.99 for 1 GB with no daily activation fee and no per-MB overages.
Can I use WhatsApp and FaceTime with an eSIM in Cambodia?
Yes. WhatsApp, FaceTime, and all messaging apps work normally on an eSIM data connection in Cambodia. 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 Cellcard starting at $3.99, 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.
What happens to my home number while using an eSIM in Cambodia?
Your home number stays fully active. With dual-SIM setup, your home SIM keeps your phone number for calls and texts while the Cambodia eSIM handles data on Cellcard. You receive calls on your home number. SMS messages arrive normally. Data routes through the eSIM at $3.99 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.
Which is the best carrier network for Cambodia?
Cellcard is the primary network for travel eSIMs in Cambodia, with Smart Axiata and Metfone as alternatives. Cellcard offers the widest coverage footprint and strongest 4G LTE infrastructure. Travel eSIM providers select Cellcard because of network reliability and roaming agreements. This is the same carrier AT&T and Verizon partner with for roaming. The difference is cost: AT&T charges $10/day for access, while an eSIM on Cellcard costs $3.99/GB. Network quality is identical because you connect to the same towers, same spectrum, same base stations.
How do I configure data roaming settings for Cambodia?
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 Cellcard. (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 my carrier's international add-on worth it for Cambodia?
No. AT&T International Day Pass and Verizon TravelPass both cost $10/day, activated the moment any background app touches your data connection. A 7-day Cambodia trip costs $70 in carrier add-on fees. A Cambodia eSIM for the same 7 days costs $28.80 on 20GB, which is 59% cheaper with no activation risk from background data. Carrier add-ons are only worth considering for single-day trips where eSIM installation is not feasible.
Do I need to register a SIM card in Cambodia?
Passport required This applies to local physical SIM cards only. A travel eSIM installed before departure does not require local registration. It activates through your provider's app and connects to Cellcard without any in-person paperwork. Plans start at $3.99.
Can my phone be unlocked but still not support eSIM for Cambodia?
Yes. An unlocked phone may not have eSIM hardware. eSIM support started with iPhone XR/XS (2018), Samsung Galaxy S20 (2020), and Google Pixel 3a (2019). Older phones, even if unlocked, require a physical SIM card. Some carrier-branded phones also have eSIM disabled in firmware even after carrier unlock. iPhone SE (1st gen), iPhone 8, and Galaxy S10 do not support eSIM. Check your phone model's specifications online or look for the eSIM option in settings. If your phone does not support eSIM, buy a physical SIM at the airport in Cambodia or use carrier roaming on Cellcard.
Can I use my eSIM for hotspot tethering in Cambodia?
Yes. Most travel eSIMs for Cambodia support personal hotspot (tethering). Enable it on iPhone: Settings > Personal Hotspot > Allow Others to Join. On Android: Settings > Connections > Mobile Hotspot. Your phone shares the eSIM's data connection from Cellcard with laptops, tablets, and other phones. Some budget eSIM plans restrict tethering, so check the plan details before purchase. Plans starting at $3.99 for 1 GB on Cellcard typically include hotspot support. Data consumed via hotspot counts against your plan balance at the same rate as on-device usage.
How do I prevent a repeat roaming bill for future trips to Cambodia?
Install an eSIM before your next departure. An eSIM on Cellcard in Cambodia costs $3.99 for 1 GB and completely replaces carrier roaming. Disable data roaming on your home SIM (iPhone: Settings > Cellular > Data Roaming off; Android: Settings > Mobile Networks > Data Roaming off) before landing. The eSIM handles all data at flat-rate pricing with no per-MB overages and no per-day activation fees. Your home SIM stays active for voice and texts. There is no mechanism to generate a surprise bill. The maximum data spend equals the eSIM purchase price, set before you leave.
Save money on data in Cambodia.
A 1GB eSIM costs $3.99 on Cellcard. AT&T charges $70 for the same 7 days.
Former consumer pricing analyst at J.D. Power covering wireless carrier satisfaction surveys
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