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A Cambodia eSIM is a prepaid mobile-data plan for your trip. Install it on a compatible, carrier-unlocked phone before departure, then select it as your data line within the plan's coverage area.
A Cambodia eSIM is a prepaid, data-only plan that loads onto your phone before you fly and switches on the moment you reach Phnom Penh International Airport. Instead of hunting for a SIM kiosk or paying roaming fees, you step off the plane already online, connecting to the local Metfone (Viettel) 4G network. From the arrivals hall you can open maps, order a tuk-tuk, message family back home, and check your booking while you wait for your bags. One scan before departure and you stay connected across the country without swapping out your physical SIM or losing your usual number.
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Choose a data plan for Cambodia, install the eSIM over reliable Wi-Fi before your trip, and follow the selected plan’s activation instructions. Your regular SIM can stay in your phone, while the eSIM gives you mobile data for travel apps, messaging, maps and browsing.
Pick a destination, data allowance and validity period.
Scan the QR or auto-install in the app — no physical SIM.
Data activates on first connection at your destination.
In total, a 5 GB data allowance covers roughly 1,700 shared photos, 83 hours of social media and browsing, 15 hours of video calls, 63 hours of music streaming, or about 1000 hours of maps and navigation. Messaging apps barely use data.
Important cities in Cambodia
Phnom Penh · City guide
A Phnom Penh eSIM keeps you online as you move between the Royal Palace, the riverside promenade, and the central markets. Use mobile data to map your route, compare prices before you buy, and call a ride when the streets get busy. With coverage strongest in the city centre, staying connected here is simple, so you can share photos and check directions without searching for free WiFi.
Phnom Penh eSIM — online before you land →Siem Reap · City guide
As the gateway to Angkor Wat, Siem Reap is where most temple visits start and end. A data plan for Siem Reap helps you book a guide, look up opening times, and find your way back to the old French quarter after a long day. In the evening, use mobile data to navigate the night market and message friends. Town coverage is reliable, though it can vary out among the ruins.
Siem Reap eSIM — online before you land →Sihanoukville · City guide
Sihanoukville pairs the beaches with the seafront and serves as the gateway to the islands. A Sihanoukville eSIM lets you check ferry times, share your location with travel companions, and post from the sand. Use mobile data along the seafront to plan your day, keeping in mind that signal can drop once you are out on the boats. Connecting before you leave the mainland keeps you covered for as long as possible.
Sihanoukville eSIM — online before you land →Battambang · City guide
Battambang offers a slower pace, with its colonial-era town set along the riverside and easy access to the surrounding countryside. A data plan for Battambang is handy for translating menus, mapping a walk through the old streets, and arranging transport for a day trip. Use mobile data while you explore, remembering that coverage is steadiest in town and may thin out as you head into the countryside.
Battambang eSIM — online before you land →Why Horizon
An eSIM lets you skip roaming charges and arrive with mobile data already working, so whether you are visiting family or seeing Cambodia for the first time, you are connected from the airport onward.
Compare the listed data allowances and validity periods for your destination.
Install over reliable Wi-Fi before departure and follow the plan's activation instructions.
Review the current price, data, validity, coverage and fair-use terms before checkout.
When the selected plan supports reuse or top-ups, My eSIMs shows the eligible options for the installed profile.
We'll alert you as you approach your limit. If the plan supports a top-up, My eSIMs shows the eligible options.
Choose country, regional or global coverage and check every destination in the plan details.
The Cambodia eSIM connects to the Metfone (Viettel) network on 4G. Coverage is strongest in city centres and main towns, and is more variable in remote and rural areas, which is normal for any network.
Coverage in Siem Reap town itself is generally strong, so you can book guides and look up the temples easily. Out among the ruins the signal can vary from spot to spot, so it helps to download maps or your itinerary while you still have a solid connection in town.
Along the Sihanoukville seafront and on the mainland the signal is usually reliable. Once you head out to the islands, coverage can drop on the boats and in spots offshore, so connect and check anything you need, such as ferry times, before you leave the shore.
This is a Cambodia-only plan and works just within Cambodia. If your trip also takes you to other countries in Southeast Asia, choose a regional eSIM that covers the wider area instead, so you stay connected across borders without switching plans.
Install the eSIM over WiFi a day or two before you fly, while you have a stable connection. Leave activation for when you arrive, so the plan is ready to switch on the moment you reach Phnom Penh International Airport and you are online before you even pick up your bags.
Yes. The eSIM adds data alongside your usual SIM, so your home number stays active for calls and texts while the eSIM handles your data in Cambodia. Most phones can also share that data as a hotspot, which is handy for a laptop or a travel companion's device.