🇰🇭 eSIM plans for Cambodia

Starting at $35.04/day*
  • No data caps
  • 7-days valid
  • Fast, reliable connection
  • Skip the roaming bill
  • QR code emailed instantly
Get your unlimited data
How many days
More days, lower daily rate
7
How many eSIMs
More eSIMs, bigger discount
1
Install it now or once you're away. Nothing starts counting until you reach your destination and switch the eSIM on.

* The "as low as" figure is the lowest per-day rate, taken from the longest unlimited data plan on sale here.

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Cambodia eSIM travel illustration

Why buy from us?

Here's how Onetel stacks up against other options in Cambodia.

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Local SIM card
Roaming
Uncapped data plans
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Your number stays the same
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Southeast Asia eSIM

Cover the Region with Southeast Asia eSIM

Cover Cambodia and every neighboring country on one regional eSIM — no SIM swaps, no extra fees. Starting at $2.16.

View Southeast Asia Plans
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eSIM costs for Cambodia

Prices shown in USD

7 days of unlimited data in Cambodia costs $245.30 — about $35.04 a day on Cellcard, Smart Axiata or Metfone, with no roaming charge and no SIM to swap. In Cambodia, 5G is live and median mobile download speed is 23.0 Mbps.

Duration Price Daily cost
1 day $36.02 $36.02/day
3 days $105.78 $35.26/day
5 days $175.54 $35.11/day
7 days $245.30 $35.04/day
15 days $71.86 $4.79/day
30 days $7.30 $0.24/day
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Which Cambodia eSIM plan fits your trip?

Choose your Cambodia eSIM by matching the allowance and validity period to your trip, then compare the selected product details with the local network, band and speed references already shown on this page.

Start with the length of your stay, then allow for navigation, messaging, streaming and work use. Each option below is a plan size that is currently available for this destination.

Short trip

1 GB / 7 days

Best for: A short visit with maps, messages and occasional browsing.

This option pairs the 1 GB allowance with a stated validity period of 7 days.

Usage tip: Save maps before longer journeys and use Wi-Fi for large downloads.

Two-week trip

3 GB / 15 days

Best for: A stay of around two weeks with regular navigation and messaging.

The 3 GB allowance remains available across a stated validity period of 15 days.

Usage tip: Keep automatic app updates and cloud backups on Wi-Fi.

Longer or higher use

10 GB or more / 30 days

Best for: A longer stay or more frequent streaming, video calls or work use.

The 10 GB or more / 30 days profile provides a larger data pool than the short-trip options on this page.

Usage tip: Compare the allowance with your normal phone usage and monitor it during the trip.

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Which networks you connect to in Cambodia

Your eSIM roams onto Cambodia's own operators. These are the networks and the frequencies they run — check your phone supports them before you travel.

Operator 4G / LTE bands 5G bands 5G
Cellcard B1, B3, B5 n78 Yes
Smart Axiata B1, B3, B5 n78 Yes
Metfone B1, B3 n78 Yes
23.0 Mbps
Median download
6.7 Mbps
Median upload

Source: Ookla Speedtest Global Index, July 2025

Coverage in Cambodia

Coverage is concentrated in urban areas and along major roads; large portions of the Cardamom Mountains, northeastern Mondulkiri and Ratanakiri provinces, and the Tonle Sap lake area have limited or no service. Smart Axiata and Cellcard operate 3G on B1 (2100 MHz), which some older US-market phones lack.

How to check mobile coverage in Cambodia

The Cambodia mobile network source is linked below as a public network reference. Check the places on your itinerary where the source offers local detail, then confirm the network information for the selected eSIM product. The operator table on this page provides the country-level reference, while the selected product details identify which network information applies to your plan.

Accommodation and daily stops

Check your accommodation and the places you expect to visit in Cambodia. Indoor reception can differ from an outdoor map, so keep the property Wi-Fi details available as well.

Journeys between stops

Review the full route rather than checking only the arrival city. Save tickets, addresses and maps offline before longer road or rail journeys.

Borders and onward travel

Check the selected product scope for every country on your itinerary. Your Cambodia plan and a regional plan may have different included destinations and validity periods.

Phone compatibility in Cambodia

Compare your phone with 4G bands B1, B3, B5 and 5G bands n78 in the existing Cambodia network table. Support for more of the listed bands gives the phone more options when connecting, while the selected product, location and local network conditions determine the service available.

Set up the Cambodia eSIM for your trip

Keep the QR code and installation instructions available offline, and complete each step according to the selected product's instructions.

When validity starts: Validity-start rules can differ by product. Check the selected plan details before installation and travel.

  1. Confirm that your phone is unlocked and supports eSIM before purchase.
  2. Save the QR code or manual installation details somewhere you can reach without mobile data.
  3. Use reliable Wi-Fi to install the profile at the time recommended in the product instructions.
  4. When you are ready to use it, select the travel eSIM for cellular data and apply the stated roaming and APN settings.
  5. Keep roaming disabled on your home line if you want to avoid using its travel data.
Network and coverage sources, checked 2026-10-10
Cambodia travel guide

Cambodia: What to Expect

Cambodia is a Southeast Asian country with a mix of ancient history and modern life. From the temples of Angkor Wat to the busy streets of Phnom Penh and the relaxed beaches of Sihanoukville, the country offers variety. Cambodian people are generally welcoming. Stay in guesthouses or hotels that match your budget. Street food is common but choose stalls with high turnover. Traffic can be chaotic; cross roads slowly and make eye contact with drivers. Bargaining is expected at markets but keep it polite. Tap water is not safe to drink; use bottled or filtered water. Learn a few words of Khmer, the local language, to show respect. Stay aware of your belongings in crowded areas.

Top Attractions to Consider

Angkor Wat is the main draw, a UNESCO World Heritage site and the largest religious monument in the world. Plan at least two days to see the main temples, including Bayon and Ta Prohm. Tonlé Sap Lake offers floating villages and a look at daily life on water. In Phnom Penh, visit the Royal Palace and the Silver Pagoda for Khmer architecture. The Tuol Sleng Genocide Museum and the Killing Fields provide a sobering look at recent history. Sihanoukville has beaches and islands for swimming and snorkeling. Battambang is quieter, with French colonial buildings and a laid-back atmosphere. Whether you choose temples, cities, or coast, each region has a different character.

Foods Worth Trying

Nom Banh Chok is a popular breakfast noodle soup with fish-based broth, fresh herbs, and rice noodles. It is lighter than Thai or Vietnamese versions. Amok is a mild curry, often made with fish, coconut milk, and lemongrass, steamed in banana leaves. Lok Lak is stir-fried marinated beef served with lettuce, tomato, cucumber, and a dipping sauce of lime and pepper. Samlor Machu Teung is a sour soup with fish, pineapple, and vegetables, similar to a hot and sour soup. Num Pang is a Cambodian baguette sandwich, similar to a Vietnamese banh mi but with local pork and pickle. Street stalls sell these dishes cheaply. Tender grilled meats and fresh spring rolls are also common. Try local fruits like dragon fruit and mango.

Best Time to Visit

Cambodia has a dry season from November to February. During these months, temperatures are lower and rain is rare. This is the best time for visiting Angkor Wat and other outdoor sites. The hot season runs from March to April, with high humidity and temperatures often above 35°C. The wet season lasts from May to October. Afternoon downpours are common but usually brief. Travel during the wet season is still possible; mornings are often clear. The countryside turns green and crowds are thinner. If you visit in the wet season, pack a rain jacket or poncho. Avoid traveling to remote areas during heavy rain, as roads can become difficult. For the best balance of weather and fewer tourists, consider late November or early February.

Packing Essentials

Lightweight, breathable clothing is essential for Cambodia's heat. Cotton and linen work well. Respectful temple attire means covering shoulders and knees; pack a scarf or shawl to wrap around. High SPF sunscreen is necessary even on cloudy days. Comfortable walking shoes are key for Angkor Wat and other temple complexes. Rain jacket or poncho is useful if you travel during the wet season. Your uPhone eSIM will keep you connected without roaming charges. Prepare for mosquitoes: bring repellent and consider a mosquito net for rural stays. Lightweight long pants help at dusk. Pack a reusable water bottle and purification tablets if you plan to refill. A small flashlight or headlamp is useful for early morning temple visits and areas with unreliable power.

Common Questions

The details worth knowing about your Cambodia eSIM

Coverage is concentrated in urban areas and along major roads. Large parts of the Cardamom Mountains, northeastern Mondulkiri and Ratanakiri provinces, and the Tonle Sap lake area have limited or no service. You should not rely on connectivity in those regions.

Smart Axiata and Cellcard operate 3G on B1 (2100 MHz), which some older US-market phones lack. Your phone may still connect to their 4G networks (B1, B3, B5) or 5G (n78) if supported. Without 3G fallback, coverage gaps may be more noticeable in rural areas.

Your eSIM will connect to one of the three local operators: Cellcard, Smart Axiata, or Metfone. All three offer 4G on bands B1, B3, and B5, and 5G on n78. The specific network depends on signal strength and roaming agreements at your location.

This eSIM is for Cambodia only and does not include coverage in neighbouring countries such as Thailand, Laos, or Vietnam. If you cross the border, you will need a separate eSIM or plan for that country to maintain service.

Local SIM cards in Cambodia often require passport registration. With this eSIM, no local ID or registration is needed. You can install it before you travel and activate it upon arrival without visiting a store or showing documents.

Compare 1 GB / 7 days, 3 GB / 15 days and 10 GB or more / 30 days. Use the shorter profiles for lighter maps and messaging use, then compare the larger allowance for streaming, video calls or work apps.

The start rule is product-specific. Review the selected plan details before installing it so you know whether any action is required before arrival.

Save the QR code, manual installation details, APN guidance and the support instructions supplied with the selected plan.
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