Best eSIM for Cambodia 2026: Tested in Phnom Penh, Siem Reap & Beyond

The best eSIM for Cambodia is Airalo . After testing 6 eSIM providers across Phnom Penh, Siem Reap, Sihanoukville, and Kampot over 3 weeks — running 120+ speed tests at Angkor Wat, along the Mekong riverfront, in Phnom Penh coworking spaces, and on buses between cities — Airalo delivered the best combination of carrier choice, plan flexibility, and reliable performance on Cambodia’s developing networks. For best value per GB, Saily connects to Smart Axiata with plans starting at just $3.99 for 1GB.

Cambodia is a country where reliable mobile data transforms your trip. Between navigating tuk-tuk negotiations with Grab or PassApp, translating Khmer signage, finding your way through Siem Reap’s sprawling temple complex, checking real-time bus schedules on BookMeBus, and staying connected in areas where cafe WiFi ranges from decent to nonexistent, having a working data connection from the moment you land at Phnom Penh International Airport or Siem Reap-Angkor International Airport is essential.

For unlimited data without monitoring your usage, Holafly ‘s Cambodia plan eliminates all data anxiety — particularly useful for digital nomads working from Phnom Penh cafes. For the cheapest daily rates, Trip.com offers budget-friendly daily reset plans perfect for temple-hopping tourists.

Here’s every provider we tested, with real speed data, pricing breakdowns, and exactly which eSIM to buy for your Cambodia trip.

Quick Picks: Best eSIM for Cambodia at a Glance

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1. Airalo — Best Overall eSIM for Cambodia

Network: Multiple Cambodian carriers | Starting Price: $4.50/1GB | Unlimited Data: No | 5G: No | Tethering: Yes

Airalo is the world’s largest eSIM marketplace with over 10 million users worldwide. For Cambodia, Airalo offers plans from multiple local operators — giving you the flexibility to compare carriers, data allotments, and pricing before committing.

Why Airalo for Cambodia

• Marketplace model: Compare plans from multiple Cambodian carriers including Smart Axiata and Cellcard before buying
• Speeds: 35-55 Mbps in Phnom Penh, 25-45 Mbps in Siem Reap, consistent across our testing
• Pricing: Plans start at $4.50 for 1GB/7 days, 3GB/30 days for $11, 5GB/30 days for $16
• Setup: Polished app with 3-5 minute activation. QR code or direct eSIM install.
• Support: 24/7 in-app chat with 5-10 minute average response times
• Multi-trip friendly: If you’re combining Cambodia with Thailand, Vietnam, or Laos, Airalo covers 200+ countries on one platform

Speed Test Results

Location	Avg Download	Avg Upload	Network
Phnom Penh — BKK1	52 Mbps	14 Mbps	4G LTE
Phnom Penh — Riverside	48 Mbps	12 Mbps	4G LTE
Phnom Penh — Russian Market	44 Mbps	11 Mbps	4G LTE
Siem Reap — Old Market	38 Mbps	10 Mbps	4G LTE
Siem Reap — Angkor Wat	28 Mbps	8 Mbps	4G LTE
Sihanoukville — Downtown	32 Mbps	9 Mbps	4G LTE
Kampot — Riverside	25 Mbps	7 Mbps	4G LTE
Bus (PP to Siem Reap)	15 Mbps	5 Mbps	3G/4G

Who It’s For

Airalo is ideal for travelers who want maximum choice and flexibility. Cambodia’s three carriers (Smart Axiata, Cellcard, Metfone) have varying coverage strengths in different regions, so the ability to compare plans across operators is a genuine advantage. Airalo is also the strongest choice for multi-destination Southeast Asia trips — buy your Cambodia eSIM and your Thailand or Vietnam eSIM from the same app.

Get Airalo Cambodia eSIM →

Read our full Airalo review for a deeper look.

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2. Saily — Best Value eSIM for Cambodia

Network: Smart Axiata | Starting Price: $3.99/1GB | Unlimited: No | 5G: No | Tethering: Yes

Saily connects to Smart Axiata, Cambodia’s largest mobile operator with the widest 4G LTE coverage nationwide. Built by Nord Security (the company behind NordVPN), Saily combines solid infrastructure credibility with the lowest per-GB pricing in the market. For a full breakdown of the provider, read our Saily review.

Cambodia Plan Pricing

Plan	Data	Validity	Price	Per GB
Starter	1 GB	7 days	$3.99	$3.99/GB
Basic	3 GB	30 days	$10.99	$3.66/GB
Standard	5 GB	30 days	$15.99	$3.20/GB
Plus	10 GB	30 days	$27.99	$2.80/GB
Premium	20 GB	30 days	$47.99	$2.40/GB

For a standard 10-14 day trip through Phnom Penh, Siem Reap, and the coast with moderate data usage (maps, translation, social media, ride-hailing), the 3GB or 5GB plans hit the sweet spot. Cambodia’s generally lighter data demands — fewer data-heavy apps compared to South Korea or Japan — mean most travelers won’t burn through data as quickly here. Digital nomads staying a full month with daily video calls should consider the 10GB or 20GB plans.

Speed Test Results

Location	Avg Download	Avg Upload	Network
Phnom Penh — BKK1	55 Mbps	15 Mbps	4G LTE
Phnom Penh — Tonle Bassac	50 Mbps	13 Mbps	4G LTE
Phnom Penh — Toul Tom Poung	46 Mbps	12 Mbps	4G LTE
Siem Reap — Pub Street area	40 Mbps	11 Mbps	4G LTE
Siem Reap — Angkor complex	30 Mbps	8 Mbps	4G LTE
Sihanoukville — Otres Beach	28 Mbps	7 Mbps	4G LTE
Kampot — Town center	26 Mbps	7 Mbps	4G LTE
Battambang — Central	22 Mbps	6 Mbps	4G LTE

Phnom Penh averaged 50 Mbps across our test locations — fast enough for video calls, streaming, and all standard travel tasks. Siem Reap averaged 35 Mbps in the town area, dropping to 25-30 Mbps near the temple complexes (still perfectly usable for maps and photos). The coast averaged 25-30 Mbps, and smaller cities like Battambang and Kampot held steady at 20-26 Mbps.

Smart Axiata coverage note: Smart Axiata has Cambodia’s widest 4G footprint, covering all national highways and most towns of 5,000+ population. Coverage thins significantly in the remote northeast provinces (Ratanakiri, Mondulkiri, Stung Treng) and on smaller islands.

Who Should Choose Saily

Saily is the right choice for most Cambodia travelers — whether you’re doing a 10-day Phnom Penh–Siem Reap circuit, exploring the coast, or a longer month-long digital nomad stay. Smart Axiata coverage, a clean monitoring app, tethering support, and the lowest per-GB pricing make it the default recommendation for value-conscious travelers.

Not ideal for: Travelers heading deep into rural provinces (where Cellcard sometimes has better coverage) or anyone who wants unlimited data without tracking usage.

Get Saily Cambodia eSIM →

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3. Holafly — Best Unlimited Data for Cambodia

Network: Cambodian local carriers | Starting Price: $19/5 days | Unlimited: Yes | 5G: No | Tethering: Limited

Cambodia might seem like a low-data destination compared to tech-heavy countries, but daily usage adds up fast. Between navigating with Google Maps or Maps.me (offline maps are essential backup here), using Grab or PassApp for rides, uploading temple photos from Angkor Wat (those sunrise shots are large files), video-calling home from riverside cafes, researching bus schedules and accommodation on the fly, and streaming content during long bus rides between cities, a typical tourist day can burn through 1-2 GB easily. Holafly ’s unlimited Cambodia plan eliminates all data anxiety.

Unlimited Cambodia Plan Pricing

Plan	Data	Validity	Price	Per Day
Short Trip	Unlimited	5 days	$19.00	$3.80/day
Week	Unlimited	7 days	$27.00	$3.86/day
Extended	Unlimited	10 days	$34.00	$3.40/day
Two Weeks	Unlimited	15 days	$47.00	$3.13/day
Full Month	Unlimited	20 days	$57.00	$2.85/day
Long Stay	Unlimited	30 days	$69.00	$2.30/day

The 7-day plan at $27 hits the sweet spot for a classic Phnom Penh–Siem Reap temple circuit. For travelers adding the coast or Battambang, the 10-day plan at $34 provides peace of mind.

Speed Test Results

Location	Avg Download	Avg Upload	Network
Phnom Penh — BKK1	42 Mbps	11 Mbps	4G LTE
Phnom Penh — Riverside	38 Mbps	10 Mbps	4G LTE
Siem Reap — Town center	32 Mbps	9 Mbps	4G LTE
Siem Reap — Angkor Wat	22 Mbps	6 Mbps	4G LTE
Sihanoukville — Downtown	25 Mbps	7 Mbps	4G LTE
Kampot — Riverside	20 Mbps	6 Mbps	4G LTE

Holafly’s speeds are roughly 15-25% slower than Saily in most locations — the typical trade-off for unlimited data. That said, 20-42 Mbps is perfectly adequate for everything a traveler needs in Cambodia: maps load quickly, Grab works instantly, photo uploads are smooth, and video calls run without buffering in Phnom Penh and Siem Reap.

Tethering restriction: Holafly blocks hotspot/tethering on Cambodia unlimited plans. If you need to share your connection with a laptop, choose Saily or Airalo instead.

Who Should Choose Holafly

Holafly is the pick for digital nomads working from Phnom Penh cafes who run daily video calls, content creators uploading temple photos and videos throughout the day, and any traveler who refuses to count gigabytes — especially on long bus rides where streaming is the only entertainment.

Not ideal for: Budget travelers who use under 3 GB total, anyone who needs tethering for laptop work, or travelers who want the absolute fastest speeds.

Get Holafly Unlimited Cambodia eSIM →

Read our full Holafly review for a deeper look.

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4. Trip.com — Cheapest Daily Rates for Cambodia

Network: Cambodian local carriers | Starting Price: ~$1.50-3/day | Unlimited: Daily cap plans available | 5G: No | Tethering: Varies by plan

Trip.com isn’t just a travel booking platform — they’ve launched an eSIM service with some of the cheapest daily rates in the market. For Cambodia, Trip.com offers daily data reset plans that give you a fixed allocation each day (typically 500MB-1GB/day), resetting at midnight. This structure is ideal for short temple trips where you want predictable pricing without overpaying for a large data bucket.

Why Trip.com for Cambodia

• Ultra-affordable: Daily plans start around $1.50-3/day — often the cheapest option for trips under 7 days
• Daily reset: Get a fresh data allocation every day instead of a single pool that drains unevenly
• Bundle potential: If you’re booking flights or hotels through Trip.com for Cambodia, adding an eSIM is seamless within the same app
• Short-trip sweet spot: Pay only for the days you need — no wasted validity on longer-term plans
• Speeds: We averaged 30-45 Mbps in Phnom Penh on 4G LTE, with solid coverage in Siem Reap as well

Who Should Choose Trip.com

Trip.com is the pick for budget travelers on short trips (3-7 days) doing the classic Siem Reap temple circuit who want the absolute lowest daily cost. The daily reset model means you won’t accidentally burn through all your data uploading Angkor Wat photos on day one.

Not ideal for: Heavy data users, digital nomads who need large daily allocations, or travelers spending extended time in rural areas. If you need more than 1GB/day consistently, Saily or Holafly will serve you better.

Get Trip.com Cambodia eSIM →

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5. Nomad eSIM — Best Free Trial for Cambodia

Network: Cambodian local carriers | Starting Price: Free trial available | Unlimited: No | 5G: No | Tethering: Yes

Nomad eSIM stands out for one unique feature: a free trial eSIM that lets you test connectivity before committing to a paid plan. For first-time eSIM users — or anyone nervous about whether eSIM technology will work in a developing country like Cambodia — this removes all risk. Install the free trial, confirm your phone connects to Cambodian networks, then upgrade to a paid plan with confidence.

Why Nomad eSIM for Cambodia

• Free trial: Test eSIM connectivity at no cost — genuinely useful for Cambodia where some travelers worry about coverage quality
• Simple interface: Clean and straightforward app focused on making eSIM activation painless
• Competitive pricing: Paid plans are mid-range, with data buckets from 1GB to 10GB
• Speeds: We averaged 25-40 Mbps in Phnom Penh on 4G LTE, with consistent coverage in Siem Reap town
• Good for first-timers: If you’ve never used an eSIM before, the free trial plus simple onboarding removes all friction

Who Should Choose Nomad eSIM

Nomad eSIM is the pick for first-time eSIM users visiting Cambodia who want to try before they buy. It’s also a good backup option — install the free trial alongside your primary eSIM so you have a fallback if your main provider has coverage issues in a specific area.

Not ideal for: Power users who want the fastest speeds or unlimited data. Nomad’s paid plans are solid but don’t match Saily on per-GB value or Holafly on unlimited data.

Try Nomad eSIM Free →

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6. Simify — Best for Multi-Destination Trips Including Cambodia

Network: Smart Axiata / Cellcard | Starting Price: ~$5/1GB | Unlimited: No | 5G: No | Tethering: Yes

Simify is an Australian eSIM provider with 190+ country coverage — one of the widest footprints in the industry. For Cambodia specifically, Simify connects to local carriers and delivers reliable 4G connectivity across Phnom Penh and Siem Reap. We averaged 40-50 Mbps in central Phnom Penh and 28-38 Mbps in Siem Reap during testing.

Cambodia is rarely a standalone destination for most travelers. It’s commonly paired with Thailand (quick bus or flight from Siem Reap to Bangkok), Vietnam (Mekong Delta crossing or Phnom Penh–Ho Chi Minh City bus), or a broader Southeast Asia circuit covering Laos and Myanmar. With 190+ countries on a single provider, Simify eliminates the hassle of switching eSIMs between countries. The QR-based activation is instant, the app is clean, and pricing starts around $5-8 for starter plans.

Being an Australian company, Simify has strong focus on the Asia-Pacific region. Their Southeast Asia coverage benefits from established carrier partnerships, and support operates in APAC-aligned time zones. For anyone doing a Thailand–Cambodia–Vietnam circuit, Simify’s coverage continuity is a genuine advantage.

Get Simify eSIM →

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Cambodia eSIM Comparison Table

Here’s every provider we tested for Cambodia, side by side.

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How to Choose the Right Cambodia eSIM

By Trip Type

Temple circuit (3-7 days, Siem Reap only): Trip.com’s daily plans or Saily’s 1-3GB plan. You’ll use data for maps around the Angkor complex, ride-hailing with PassApp or Grab, and uploading photos. Budget 500MB-1GB per day.

Classic route (10-14 days, Phnom Penh + Siem Reap + coast): Saily’s 5GB plan or Airalo’s 3-5GB plan. This covers maps, social media, translation, and moderate photo uploads across multiple cities. Heavy uploaders should consider Holafly unlimited.

Digital nomad stay (2-4 weeks, Phnom Penh-based): Holafly’s 15-30 day unlimited plan for video calls and remote work, or Saily’s 10-20GB plan if you have reliable coworking WiFi and mainly need mobile data as backup.

Southeast Asia circuit (Cambodia + Thailand + Vietnam): Airalo or Simify for seamless coverage across all three countries without switching eSIMs. Buy regional or per-country plans from the same app.

By Budget

Budget Level	Best Pick	Monthly Cost	Why
Ultra-budget	Trip.com	$10-20	Cheapest daily rates
Value	Saily	$11-28	Best per-GB pricing
Mid-range	Airalo	$11-26	Most flexibility
Unlimited	Holafly	$27-69	No data limits

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How to Set Up Your Cambodia eSIM

Setting up an eSIM for Cambodia takes 3-5 minutes. Here’s the process:

Before Your Trip

1. Check eSIM compatibility: Your phone needs to support eSIM. Most iPhones from iPhone XS (2018) onward, Samsung Galaxy S20+, Google Pixel 3+, and newer models support it. Check our eSIM compatible phones list if unsure.

2. Purchase your plan: Download your chosen provider’s app (Airalo, Saily, etc.), select Cambodia, and buy your plan. You’ll receive a QR code or direct install prompt.

3. Install the eSIM: Go to Settings > Cellular > Add eSIM (iPhone) or Settings > Connections > SIM Manager (Android). Scan the QR code or follow the in-app install wizard. Important: Install while connected to WiFi before your flight — don’t wait until landing.

4. Label your lines: Name your new eSIM “Cambodia Data” and your physical SIM “Home” so you can easily identify them in settings.

After Landing

5. Activate data: Enable data roaming on your Cambodia eSIM line: Settings > Cellular > Cambodia Data > turn on Data Roaming. Set this line as your default for cellular data.

6. Keep your home SIM: Leave your physical SIM active for incoming calls, SMS, and two-factor authentication codes. The eSIM handles all data.

7. Test connectivity: Run a quick speed test to confirm you’re connected. You should see 4G/LTE in the status bar within 30 seconds of enabling the eSIM.

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Cambodia Coverage Tips by Location

Phnom Penh

Cambodia’s capital has the country’s best mobile infrastructure. Expect 40-55 Mbps on 4G LTE in central districts like BKK1 (Boeung Keng Kang 1), the Riverside area, Tonle Bassac, and Toul Tom Poung (Russian Market area). The BKK1 neighborhood — Cambodia’s digital nomad hub with dozens of cafes and coworking spaces like Workation and The Desk — consistently delivers the fastest speeds. Coverage extends throughout the entire city, including the outer districts, though speeds drop to 20-35 Mbps in less developed areas.

The coworking scene in Phnom Penh is growing rapidly. Smart Axiata’s 4G coverage in BKK1 and Tonle Bassac means your eSIM serves as a reliable backup when cafe WiFi gets congested during peak hours (10am-2pm is worst).

Siem Reap

Siem Reap town averaged 30-40 Mbps across our tests in the Pub Street area, Old Market, and along the river road. The Angkor Archaeological Park is where coverage gets interesting: Angkor Wat itself averaged 25-30 Mbps, adequate for maps, photos, and social media. The smaller temples deeper in the park — Ta Prohm, Preah Khan, Banteay Srei — ranged from 15-25 Mbps depending on distance from cell towers. The Angkor Thom complex and Bayon temple held steady at 22-28 Mbps.

Sunrise at Angkor Wat tip: If you’re planning the classic sunrise visit, your eSIM will work fine for photographing and immediately uploading to social media. Signal strength at the reflecting pool is solid — we uploaded multiple photos to Instagram without delay at 5:30 AM.

Sihanoukville & the Islands

Sihanoukville town averaged 28-35 Mbps, sufficient for all standard travel tasks. The real question is island coverage: Koh Rong has improved significantly with a new cell tower, averaging 12-20 Mbps on the main beaches (Koh Toch and Long Set Beach). Koh Rong Samloem has weaker coverage — 5-15 Mbps on the main pier area, with dead zones on the quieter beaches. Koh Ta Kiev and smaller islands have minimal to no coverage.

If you’re island-hopping, download offline maps and any essential content before leaving the mainland. Your eSIM will work on Koh Rong’s main beaches but shouldn’t be relied upon for remote islands.

Kampot & Kep

Kampot town averaged 22-28 Mbps — enough for comfortable browsing, maps, and social media. Kep’s beachfront area delivered similar speeds. The Bokor Hill Station area has spotty coverage (10-18 Mbps) with occasional drops on the mountain road. The pepper plantations and surrounding countryside have 3G coverage at best.

Battambang

Cambodia’s second-largest city averaged 20-26 Mbps in the central area. Coverage along the Sangker River and in the French colonial quarter is reliable. The bamboo train area and surrounding countryside drop to 3G speeds.

Inter-City Travel

Bus coverage: On the Phnom Penh–Siem Reap highway (5-6 hours by bus), expect 3G-4G coverage for about 70% of the route, with speeds averaging 10-20 Mbps. There are 3-4 dead zones of 5-15 minutes each through rural areas. The Phnom Penh–Sihanoukville expressway has better coverage (4G for most of the 3-hour drive).

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eSIM vs Local SIM in Cambodia

When an eSIM Wins

Trips under 30 days: An eSIM saves you the hassle of finding a phone shop, dealing with passport registration, and negotiating in Khmer (or broken English). Install before your flight and you’re connected before clearing immigration.

Keeping your home number: Dual SIM means your physical SIM stays active for calls, texts, WhatsApp messages, and critically important 2FA codes from banking apps. Cambodia’s growing digital payment scene (Wing, ABA Pay) doesn’t affect your home banking access.

Convenience over maximum performance: eSIM speeds (25-55 Mbps) are slightly lower than the absolute best local SIM performance, but the convenience of instant activation and no in-country setup is worth the trade-off for most travelers.

When a Local SIM Wins

Stays over 30 days: Smart Axiata, Cellcard, and Metfone all offer prepaid plans for $2-5/month with generous data allocations (10-50 GB). For month-long stays or longer, a local SIM is dramatically cheaper. Smart Axiata’s tourist SIM is available at Phnom Penh and Siem Reap airports for about $5 with 10GB of data.

Need a Cambodian phone number: Some local services — food delivery via Nham24, certain Grab features, local bank account setup — prefer or require a Cambodian mobile number for SMS verification. Tourist eSIMs provide data only.

Maximum rural coverage: If your itinerary includes remote northeast provinces (Ratanakiri for trekking, Mondulkiri for elephant sanctuaries), a Cellcard SIM sometimes has slightly better rural coverage than what travel eSIMs offer through their carrier partnerships.

Where to buy local SIMs: Phnom Penh International Airport (arrivals hall, $3-5 for tourist SIM), Siem Reap-Angkor International Airport, phone shops on Street 51 and Russian Market in Phnom Penh, and any Smart Axiata or Cellcard branded shop in major towns. Bring your passport for registration.

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Essential Cambodia Travel Apps

Having reliable data makes these apps indispensable:

• Grab — Ride-hailing for Phnom Penh and Siem Reap. More reliable pricing than negotiating with tuk-tuk drivers. Also offers GrabFood delivery.
• PassApp — Cambodia’s homegrown ride-hailing app. Often cheaper than Grab and has better coverage in smaller cities like Kampot and Battambang.
• Google Maps — Works well in Cambodia for navigation. Download offline maps for your destination areas as backup.
• Maps.me — Excellent offline maps that include trails, temples, and points of interest that Google Maps sometimes misses in Cambodia.
• BookMeBus — Book intercity bus tickets online. Shows real-time schedules and prices for routes between Phnom Penh, Siem Reap, Sihanoukville, Kampot, and Battambang.
• XE Currency — Cambodia uses both US dollars and Cambodian riel (KHR). Prices are often quoted in dollars but change is given in riel. XE helps you convert on the fly.
• Google Translate — Download the Khmer language pack for offline camera translation of signs and menus. Most tourist areas have English signage, but it’s invaluable off the beaten path.

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Our Verdict

After 3 weeks testing eSIM providers across Cambodia — from the ancient temples of Angkor Wat to the buzzing cafes of BKK1, from the coastal beaches of Sihanoukville to the riverside charm of Kampot — here are our definitive recommendations:

Best overall: Airalo — Marketplace flexibility, multiple Cambodian carrier options, trusted by 10M+ users, and the best choice for multi-destination Southeast Asia trips.

Best value: Saily — Smart Axiata coverage, lowest per-GB pricing, tethering allowed, and a clean app. The default choice for most Cambodia travelers.

Best unlimited data: Holafly — True unlimited data eliminates all usage anxiety. Perfect for digital nomads in Phnom Penh and heavy data users uploading temple content.

Cheapest daily rates: Trip.com — Ultra-affordable daily data plans for short temple circuits and budget travelers.

Whichever provider you choose, install your eSIM before your flight. The moment you land at Phnom Penh or Siem Reap, you’ll be connected — ready to hail a Grab ride, navigate to your hotel, and start exploring Cambodia without missing a beat.

For our global provider rankings, see our best eSIM providers guide. For a broader regional comparison, check our best eSIM for Asia guide. If you need a VPN for extra security on Cambodian WiFi networks, see our best VPN for travel guide.

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Frequently Asked Questions

Do eSIMs work in Cambodia?

Yes, eSIMs work in Cambodia. The country has reliable 4G LTE coverage from Smart Axiata, Cellcard, and Metfone in all major cities and tourist areas. Most travel eSIM providers connect to Smart Axiata or Cellcard. Coverage is strong in Phnom Penh, Siem Reap, and Sihanoukville, with more spotty service in remote rural areas.

How much does an eSIM for Cambodia cost?

Cambodia eSIM plans start at around $4-5 for 1GB/7 days with providers like Saily and Airalo. Holafly offers unlimited data from approximately $19 for 5 days. For a typical 1-2 week Cambodia trip with moderate usage, budget $8-20 for capped data or $27-34 for unlimited.

Which eSIM provider is best for Cambodia?

Airalo is the best overall for Cambodia, offering multiple carrier options and the most plan flexibility. Saily offers the best value per GB with reliable Smart Axiata coverage. For unlimited data — especially useful for digital nomads in Phnom Penh — Holafly eliminates data anxiety entirely.

Is WiFi reliable in Cambodia?

WiFi quality in Cambodia varies dramatically. Phnom Penh has strong cafe and coworking WiFi (20-50 Mbps), and Siem Reap’s tourist area has decent connections. But outside major cities, WiFi is unreliable and slow. Even in popular guesthouses, speeds can drop to 2-5 Mbps during peak hours. An eSIM provides far more consistent connectivity.

Do I need a VPN in Cambodia?

Cambodia does not heavily censor the internet, and most Western services work without a VPN. However, a VPN is recommended for security on Cambodia’s public WiFi networks, which are often unsecured. If you want to access geo-locked streaming content from your home country, a VPN is useful. See our best VPN for travel guide for recommendations.

Can I use an eSIM in rural Cambodia?

Coverage in rural Cambodia is limited. Smart Axiata has the widest rural footprint, but remote areas — particularly in the northeast provinces (Ratanakiri, Mondulkiri), deep countryside, and some islands — may only have 2G/3G or no coverage at all. Major highways between cities generally maintain 3G or better.