eSIM for Cambodia: Prepaid Mobile Data for Your Trip
Install a data plan for Cambodia on your phone before departure and connect to local networks the moment you land at Phnom Penh or Siem Reap.
Prepaid eSIM for Cambodia
- Install by QR code before departure, activates on arrival
- Keep your own number for calls and WhatsApp
- Hotspot sharing allowed, top up from the app
Scan with your phone camera to open the app
How an eSIM works in Cambodia
An eSIM is a digital SIM profile stored directly on your phone. You purchase a data plan through an app, scan a QR code to install the profile over Wi-Fi, and the moment you arrive in Cambodia your phone connects to a local carrier without swapping physical cards. Your primary SIM stays active for calls and texts on your home number, while the eSIM line handles mobile data.
- Download the provider app and choose a Cambodia data plan that matches your trip length and usage.
- Install the eSIM profile by scanning the QR code while connected to Wi-Fi, ideally at home before you leave.
- On arrival in Cambodia, open Settings, enable data roaming for the eSIM line only, and select it as your default data source.
- Top up inside the app if you need more gigabytes or extend your validity period during your stay.
Coverage and networks in Cambodia
The eSIM app connects you to two national operators in Cambodia: Cellcard and Viettel, which operates under the Metfone brand. Both carriers run 3G and LTE networks across the country, and coverage inside Phnom Penh, Siem Reap, Sihanoukville and Battambang is solid.
| Operator | Technology | Where it is strongest |
|---|---|---|
| Cellcard | 3G / LTE / 5G | Phnom Penh, Siem Reap, Sihanoukville, National Highway 6 |
| Viettel (Metfone) | 3G / LTE / 5G | Phnom Penh, Battambang, Kampot, southern coastal provinces |
Rural areas and remote temples outside the main Angkor Archaeological Park see weaker signal. The Cardamom Mountains and far northeastern provinces rely on 3G or drop to edge. Both operators have rolled out 5G in Phnom Penh and Siem Reap, but whether you get 5G speeds depends on your handset and which plan you activate.
Which plan for which trip
Data plans for Cambodia start from $2.30 per GB. Shorter validity periods suit quick temple tours; longer plans make sense if you are combining Cambodia with neighboring countries. Daily unlimited options are available from $3.67 per day and work well when your usage is unpredictable.
| Trip type | Days | Typical usage | Suggested data |
|---|---|---|---|
| Weekend temple visit | 2-3 | Maps, messaging, photo uploads | 1-2 GB |
| One week | 7 | Daily navigation, social media, video calls | 3-5 GB |
| Two weeks | 14 | Remote work, streaming, regular uploads | 8-12 GB |
| One month | 30 | Full-time connectivity, video streaming | 20 GB or unlimited daily |
If you stream video tours of Angkor Wat or upload high-resolution photos every evening, an unlimited daily plan removes the need to monitor your balance. Just remember that the day counter starts the moment you connect to a Cambodian network.
eSIM vs a local SIM card in Cambodia
Physical SIM cards are sold at Phnom Penh and Siem Reap airports, in branded stores along Street 130, and at small phone shops in every provincial town. You need your passport for registration, and the clerk will usually cut the card to fit your device. The whole process takes ten to fifteen minutes if there is no queue, but airport kiosks often charge higher rates than city shops.
eSIM
- Install at home over Wi-Fi
- Active the moment you land
- No passport form or shop visit
- Top up in the app
Local SIM
- Buy at airport or city shop
- Passport required for registration
- Language barrier at smaller shops
- Top up with scratch cards or banking app
An eSIM saves you the airport queue and lets you share your arrival time on WhatsApp the moment you step off the plane. Read more in our eSIM vs local SIM comparison.
Phone compatibility and setup before you fly
Not every smartphone supports eSIM technology, and a locked device will reject the profile even if the hardware is capable. Run through this checklist a day or two before departure so you have time to fix problems.
- Your phone must be carrier-unlocked. Contact your home operator if you are unsure.
- Check that your model appears on the eSIM-compatible phones list.
- Install the eSIM profile over Wi-Fi before you leave; airport connections can be slow.
- Save a screenshot of the QR code in case the email gets buried.
- Label the new line 'Cambodia data' in Settings so you know which one to toggle on arrival.
Once the profile sits in your phone, it stays dormant until you enable data roaming for that specific line and connect to a Cambodian tower.
Staying connected in Cambodia: practical tips
Cambodia does not block major messaging apps or social platforms, so WhatsApp, Instagram and Gmail work without restriction. Google Maps caches offline tiles if you download the region before you leave your hotel; this trick is useful around Angkor Archaeological Park, where signal drops between temple clusters.
Power cuts are less common in Phnom Penh and Siem Reap than they were a few years ago, but a USB power bank still makes sense if you spend all day at the temples. Cambodian sockets follow types A, C and G; a universal adapter covers all three.
If data stops working, toggle airplane mode, restart the phone, and confirm that data roaming is enabled only for the eSIM line. Our eSIM troubleshooting guide walks through every common scenario step by step.
Other destinations in Southeast Asia
Many travellers pair Cambodia with Thailand, Vietnam or Laos on a multi-country loop. If your itinerary crosses borders, a regional Southeast Asia eSIM plan covers all four countries under a single data allowance. The provider also offers single-country plans for Indonesia, Malaysia and Brunei if your route extends further east or south.
Frequently asked questions
Do I need to do anything special to activate my eSIM when I arrive in Cambodia?
Turn on your phone, open Settings, enable data roaming for the eSIM line, and select it as your default mobile data source. The profile will search for Cellcard or Viettel towers and connect within a minute or two.
When does the validity period of my Cambodia eSIM plan start counting down?
The day counter starts the first time your phone connects to a network in Cambodia, not when you install the profile or purchase the plan. If your plan says seven days, you have seven calendar days from that first connection.
Can I share my Cambodia eSIM data with another device using a personal hotspot?
Yes. Enable personal hotspot in your phone's settings and connect your laptop or tablet as you would with any mobile data plan. Check the plan page for any fair-use notes on tethering.
Will I get a Cambodian phone number with my eSIM so people can call me?
No. The eSIM provides data only. Your home number stays active on your primary SIM for calls and texts, and you can use WhatsApp, Telegram or Skype over the eSIM data connection for voice and video.
Does the Cambodia eSIM support 5G, and will I get 5G speeds in Phnom Penh and Siem Reap?
Both Cellcard and Viettel have launched 5G in major cities. Whether you connect to a 5G cell depends on your handset capability and the specific plan you activate; check the plan page for network details.
What should I do if my eSIM shows no signal or no internet connection after I land in Cambodia?
Restart your phone, confirm that data roaming is on for the eSIM line and off for your home SIM, and wait two minutes for the network search to complete. If that fails, remove and reinstall the eSIM profile using the original QR code. Our troubleshooting guide has more steps.
Get your Cambodia eSIM now
Install your data plan at home, land in Phnom Penh or Siem Reap with connectivity sorted, and spend your first hour exploring temples instead of hunting for a SIM card kiosk. Plans start from $2.30 per GB, and the app takes two minutes to set up.
Get Cambodia eSIM→