Cambodia eSIM
Provider Comparison
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Key Features
About Cambodia eSIM
What's included:
- Upgradable high-speed data
- 30 days validity from activation
- 4G/5G network access where available
- Works across all major cities and tourist areas
- 24/7 customer support
- Easy QR code activation process
Cambodia eSIM
Cambodia delivers Angkor Wats sandstone temples at sunrise, the buzz of Phnom Penh, the colonial riverfront of Battambang and the white sand of Koh Rong - usually all in one trip. A prepaid Cambodia eSIM connects your phone to Cellcard, Smart or Metfone the moment you land at Siem Reap Angkor International (SAI) or Phnom Penh International (PNH), so booking your tuk-tuk to Angkor, coordinating a Mekong cruise pickup or finding the right rooftop bar in BKK1 stays simple. This page compares every active Cambodia eSIM plan and the QR code arrives by email within minutes of purchase. No SIM kiosk line at the airport, no passport copy, no roaming surcharges from your home carrier.
Why an eSIM Works So Well in Cambodia
Cambodia runs on cash, tuk-tuks and smartphone apps. PassApp and Grab are essential for getting around without overpaying, and both need a working data connection. WhatsApp is how every guesthouse, tour operator and Angkor guide confirms your bookings. Without local data you would be relying on cafe Wi-Fi - which exists everywhere in Cambodia but is patchy when you most need it (mid-tuk-tuk negotiation, mid-temple, mid-border crossing). An eSIM gives you data from the second you land.
Coverage in Siem Reap and Phnom Penh
Both major cities have excellent 4G LTE on Cellcard, Smart and Metfone. The Old Market and Pub Street in Siem Reap, the Royal Palace and BKK1 districts in Phnom Penh, and all major hotels get strong signal. Speeds easily handle video calls and uploading temple photos.
Angkor temples and beyond
Angkor Wat and the main temple loop have good coverage - you can WhatsApp your tuk-tuk driver from inside Ta Prohm. The Beng Mealea and Banteay Srei outer temples have weaker signal but generally usable. Koh Rong, Battambang and the coastal towns all have LTE in town centers.
Cambodian Carriers: Cellcard, Smart, Metfone
Cambodia has three main mobile operators. Cellcard is the legacy domestic carrier with strong national reach. Smart Axiata (part of the Malaysian Axiata group) has excellent urban LTE and growing 5G. Metfone (Viettel) is the largest by subscriber count and has the deepest rural coverage. Your eSIM picks the best signal automatically.
Smart and Cellcard
The two strongest in Phnom Penh and Siem Reap. Fast LTE in city centers and along the highway between the two. 5G is rolling out in Phnom Penh.
Metfone
The deepest rural footprint - if you head to Mondulkiri, Ratanakiri or remote provinces, Metfone is the most reliable. The eSIM uses Metfone when Smart or Cellcard signal is weaker.
How Much Data You Need
Cambodia trips skew app-heavy. PassApp/Grab for every short ride, WhatsApp with guides, Google Maps in the temple complex, Google Translate for menus, Instagram for sunrise temple shots, and constant cloud photo backup. Plan for at least 1 GB per day, more if you upload daily content.
Siem Reap focused trip (4-5 days)
3-5 GB covers Angkor exploration with WhatsApp, Maps, Grab and photo uploads. The temples are a phone-heavy environment so plan generously.
Full Cambodia loop (10-14 days)
10 GB or unlimited for Siem Reap plus Phnom Penh plus Koh Rong plus Battambang. Bus and boat transit days burn extra data when streaming or downloading entertainment.
Longer stays (Spanish language students, expat trial)
Unlimited makes sense if you are staying weeks. Cambodia has a strong expat scene in Phnom Penh and Siem Reap where many people work remotely.
Activating Your Cambodia eSIM
Purchase here, QR code arrives by email in 1-2 minutes, scan into your phone at home before flying. The eSIM stays dormant until your phone connects to a Cambodian network. Siem Reap Angkor (SAI) and Phnom Penh International (PNH) airports both have full LTE at landing.
iPhone install
Settings > Cellular > Add eSIM > Use QR Code. Scan or open the email and tap. Label the line Cambodia. Plan downloads in seconds.
Android install
Settings > Network & internet > SIMs > Download a SIM Instead. Pixel and Samsung Galaxy work cleanly.
Land crossing from Thailand or Vietnam
If you cross at Poipet from Thailand or Bavet from Vietnam, your phone hands off from Thai or Vietnamese carriers to Cambodian carriers at the border. The eSIM activates automatically. Make sure home roaming is OFF to avoid charges.
Essential Cambodian Apps
PassApp and Grab are the local ride-hail apps. WhatsApp is the universal communication tool with guides, hotels and tour operators. Google Maps handles temple navigation though offline maps help in the Angkor complex. Currency conversion (US dollars and Cambodian riel both used) helps at markets.
PassApp and Grab
PassApp dominates Phnom Penh and is cheaper than Grab for short tuk-tuk rides. Grab works in both cities. Both need a working data connection and SMS or WhatsApp verification.
WhatsApp and Telegram
WhatsApp is most common but some operators prefer Telegram (popular among the Khmer business community). Have both ready.
Google Translate offline
Pre-download Khmer offline. Useful at smaller restaurants and markets. English is widely spoken in Siem Reap and Phnom Penh tourist zones but less so elsewhere.
Before You Buy
Cambodia uses US dollars alongside the Cambodian riel - ATMs dispense USD and most transactions are in dollars. The eSIM works the same regardless. A few practical notes specific to Cambodia.
eSIM-compatible phone
iPhone XS or newer, Pixel 3 or newer, Galaxy S20 or newer (most variants). Older phones can buy a Cellcard or Smart SIM at either airport. Cambodian SIM registration is lighter than many countries - usually just passport scan.
Border scams and pre-arranged transport
Tuk-tuk scams at borders and airports are common. Pre-booking transport through PassApp or via your hotel through WhatsApp avoids the overcharge dance. The eSIM lets you do this immediately on arrival.
Frequently Asked Questions — Cambodia eSIM
Traveler Reviews — Cambodia eSIM
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Cambodia Related Blog Contents
Check Our BlogVisiting more than Cambodia? Browse Asia regional eSIM plans → Or check Global multi-country eSIMs →
Not sure if your phone supports eSIM? Check our Compatible Phones List → iPhone XS and newer, Pixel 3 and newer, most Samsung Galaxy S20+ models all work.