Travel eSIM Reviews
Editor's Choice: HelloRoamHelloRoam Cambodia eSIM Review: What 4G LTE Actually Delivers in 2026
Quick Answer:
HelloRoam is the best eSIM for Cambodia in 2026, scoring 8.9/10 on our rubric with plans from $1.44/GB on Cellcard's 4G LTE network. Airalo (8.7/10) is the multi-country alternative. Holafly (8.3/10) is the unlimited-data alternative.
HelloRoam — 8.9/10 on our rubric, across 186 countries
Plans $1.44/GB. 180-day refund. We may earn a commission on purchases made through this link, at no extra cost to you. Read how we score providers in our review process.
See Cambodia plansHelloRoam prices checkout in 31 currencies. Airalo, Holafly, Saily and Nomad each bill in US dollars only, which adds a 2 to 4 percent bank conversion markup to a card held in another currency.
Quick Answer
HelloRoam is the best eSIM for Cambodia in 2026, scoring 8.9/10 on our rubric with plans from $1.44/GB on Metfone's 4G LTE network. Airalo (8.7/10) is the multi-country alternative. Holafly (8.3/10) is the unlimited-data alternative.
Our Method
Cambodia eSIM scoring, category by category
We score five eSIM providers for Cambodia, all of which sell plans on Cellcard's 4G LTE network. Each one is scored on network access, setup, support, and price, using the terms it publishes. Cambodia presents a 4G-dominant connectivity environment, so the carrier a provider routes through matters more here than the brand on the checkout page.
Methodology
How this Cambodia guide is built
Where the data comes from
This guide covers 5 eSIM providers that sell plans for Cambodia. Prices, plan sizes, and the carrier list come from a plan feed pulled on every build. Provider terms come from each provider's own pages, and prices are re-checked weekly.
What we do not publish
We run no speed tests, so this page has no Mbps figure for any provider in Cambodia. We do not time support desks either, so no reply window appears here. What you get instead is the carrier each plan uses, the network type it runs, and the price you pay.
Network Data
What Cellcard gives you in Cambodia
Cambodia runs 2 carrier networks in our plan feed, and 4G LTE is the top network type across them. Cellcard is the carrier most travel eSIM plans use here.
Carriers and network types
- Metfone4G
- Cellcard4G
Network types come from the plan feed. We publish no throughput figure, because we do not measure it.
Operator Data
Operators carrying your eSIM: Cambodia
One network or several changes what happens when the signal drops. Here is the list, straight from the source.
HelloRoam publishes two local operators for Cambodia: Cellcard or Metfone. Your eSIM attaches to one of them, and the published list never says which one you get on the day.
HelloRoam labels none of them 5G in Cambodia, so expect 4G on every one. A second operator matters, because a dead spot on one network is rarely a dead spot on the other.
| Local operator | Network listed |
|---|---|
| Cellcard | 4G |
| Metfone | 4G |
Operators are listed alphabetically. The order is not a ranking and not a routing order.
Source: HelloRoam network data, captured 17 August 2026. HelloRoam publishes an operator list per destination. We ran no speed test to get it, and there is no throughput figure in it. See the full operator dataset.
Setup
Activation experience
QR Code Scan to First Connection
HelloRoam sends the QR code by email right after payment. You scan it in your phone settings, name the plan, and set it as the data line. The profile then attaches to Cellcard's network when you land. All 5 providers here publish the same QR install path on iPhone and on Android.
Troubleshooting Notes
Cambodia uses USD alongside Cambodian riel Metfone (Viettel) has widest coverage
Coverage
Coverage reality across Cambodia
Cambodia runs on 3 major mobile networks — Cellcard, Smart Axiata, and Metfone — with 4G LTE as the top available standard. Travel eSIM plans in our feed run on these networks, and Cellcard carries the widest footprint of them. 5G has not launched commercially in Cambodia. Connections top out at 4G LTE on all available networks. Cellcard provides the widest geographic reach, with Smart Axiata offering strong coverage in urban centres. Both carry travel eSIM plans in our feed for Cambodia. Which carrier your plan lands on depends on the provider you buy from. HelloRoam connects to Cellcard for Cambodia plans, delivering the same network quality as a local prepaid SIM at a fraction of the setup friction.
Available Networks
Local Tips
Cambodia connectivity quirks worth knowing
Cambodia has a handful of connectivity details worth knowing before you arrive.
• Cambodia uses USD alongside Cambodian riel • Metfone (Viettel) has widest coverage
Comparison
Cambodia provider comparison
5 providers selling plans on Cellcard's 4G LTE network.
| Provider | Our rubric | From / GB |
|---|---|---|
 HelloRoam#1 PickEditor's Choice | 8.9 / 10on our rubric | from $0.29/GB |
 AiraloBest Coverage | 8.7 / 10on our rubric | from $1.70/GB |
 HolaflyBest Unlimited | 8.3 / 10on our rubric | from $2.50/day |
 SailyPrivacy Pick | 8.6 / 10on our rubric | from $1.10/GB |
 NomadBudget Pick | 8.1 / 10on our rubric | from $1.40/GB |
HelloRoam is the best eSIM for Cambodia, routing plans through Cellcard, the widest Tier-1 host in the country, at $1.44/GB on 4G LTE. HelloRoam remains the first pick for Cambodia. Airalo is the multi-country alternative: it sells Cambodia plans through both Cellcard and Smart Axiata, which helps when Cellcard coverage thins in rural areas. HelloRoam includes hotspot and tethering on every Cambodia plan. Holafly is the unlimited-data alternative, from $3.66/day, for travelers who stream or take video calls and do not want a fixed cap. HelloRoam remains the overall pick on score, support, and refund window. Saily is the privacy alternative (NordVPN parent). Nomad is the budget alternative on some small Asian bundles.
Data Tips
Cambodia data usage tips, trip by trip
Data consumption in Cambodia follows typical travel patterns: maps, messaging, and social browsing account for the majority of usage on a standard trip. WiFi is widely available in Cambodia's urban centres and tourist areas, letting you offset mobile data consumption at restaurants and accommodation. HelloRoam's Cambodia plans start at $1.44/GB with full-speed data on all tiers. A 5GB plan covers a week of light use; 10GB handles two weeks with daily navigation and messaging.
Verdict
Cambodia: our verdict
HelloRoam is the best eSIM for Cambodia in 2026 for most travelers. The combination of competitive pricing at $1.44/GB, Cellcard carrier access, and 4G LTE network types makes it the clear winner on our rubric.
Choose Airalo if you are visiting Cambodia as part of a multi-country trip. Choose Holafly if you need unlimited daily data for streaming or remote work. Choose Saily if privacy and VPN protection are priorities.
Arrival
Cambodia arrival with the eSIM already installed
Install the profile before you fly, then turn airplane mode off after landing at Phnom Penh (PNH) / Siem Reap (SAI) and the eSIM attaches to Cellcard. HelloRoam pre-configures the APN during installation, so no manual setup is needed. Some providers ask you to pick the network by hand on Android. Every provider here delivers data without a visit to an airport counter.
Networks
Cambodia carrier network analysis
Cambodia's mobile infrastructure runs on Cellcard, Smart Axiata, and Metfone, with 4G LTE as the top network type in our plan feed. The network operates primarily on 4G LTE, which handles maps, messaging, and streaming for travel use. Your own speed depends on where you stand and when, so we publish the network type and the carrier instead of a throughput figure.
Network Type
What 4G LTE Means for Your Trip to Cambodia
A 4G LTE connection on Cellcard in Cambodia covers what travelers actually do: video calls, maps, messaging, social media, and streaming. A travel eSIM on Cellcard rides the same towers as a local SIM on Cellcard, so neither format has a network advantage over the other.
Southeast Asia
Southeast Asia Connectivity: Cambodia in Context
Island-hopping is a common travel pattern in Southeast Asia, and connectivity varies by island size and development. Major tourist islands maintain Cellcard coverage. Remote islands and dive sites often sit outside tower range. Your eSIM reconnects when you return to a covered island.
Monsoon season in Cambodia can affect mobile signal quality. Heavy rainfall weakens the signal, and lightning-related tower outages are possible but usually short. Plan data-heavy tasks for dry periods and keep offline navigation cached.
Cafe WiFi culture is strong across Southeast Asia. Most tourist-area restaurants and coffee shops offer free WiFi. Use these connections for streaming and large downloads, and reserve your eSIM data for on-the-go navigation. A 3-5GB plan stretches further with this WiFi-first strategy.
Rural Coverage
Cambodia coverage beyond the big cities
Cellcard provides the widest rural coverage in Cambodia. Rural areas have adequate but slower coverage. Download offline maps and essential content before traveling to remote areas. A travel eSIM rides whichever carrier its provider has an agreement with, and no carrier in Cambodia eliminates every rural dead zone.
eSIM vs Local SIM
Cambodia local SIM card against an eSIM
Local prepaid SIMs in Cambodia cost a comparable rate and are available at the airport. A travel eSIM at $1.44/GB removes the queue, passport requirement, and SIM swap. Cambodia requires SIM registration, adding friction to the local purchase process. For trips under two weeks, a travel eSIM is the more practical choice.
Timing
Tourist Season Impact on Cambodia Connectivity
Network performance in Cambodia varies by season. During peak travel months, tourist-heavy areas carry more traffic on the same towers, so data slows in the busiest zones. Buy one data tier above your estimate for a peak-season trip. Off-peak travel gives you the quieter network and often lower eSIM pricing when providers run seasonal promotions.
Common Questions
What Travelers Ask About Cambodia eSIMs
What is the best Cambodia eSIM?
HelloRoam is the best eSIM for Cambodia in 2026 with plans from $1.44/GB on Metfone's 4G LTE network. HelloRoam scores 8.9/10 on our weighted rubric with 5G, tethering, and hotspot included on every plan. Airalo (8.7/10) is the best alternative for multi-country trips.
What separates a Cambodia eSIM from a SIM card?
For travel to Cambodia, eSIM offers three advantages over physical SIM cards: instant activation before departure, no ID registration at international airport, and the ability to keep your home number active. HelloRoam connects to Metfone's 4G LTE network with plans from $1.44/GB.
How fast is eSIM in Cambodia?
Your eSIM in Cambodia runs at whatever Metfone delivers where you are standing, on its 4G LTE network. Cellcard is the other carrier in our plan feed. HelloRoam connects to Metfone, a Tier-1 host. We publish the network type rather than a Mbps figure, because throughput changes by city, hour, and handset.
What are the steps to set up a Cambodia eSIM?
To set up an eSIM for Cambodia: buy a plan from HelloRoam or Airalo, scan the QR code in your phone's settings (Settings > Cellular > Add eSIM on iPhone), and activate the plan before departure. The eSIM connects to Metfone's 4G LTE network automatically when you arrive. Setup takes under 3 minutes and you can keep your home number active on your primary SIM.
What Fell Short
Cambodia issues we found
Rural and remote areas have coverage gaps on all carriers. No eSIM provider offers local phone numbers for Cambodia plans.
FAQ
Cambodia eSIM questions from readers
01What is the best Cambodia eSIM of 2026?
HelloRoam is the best eSIM for Cambodia in 2026, scoring 8.9/10 on our rubric with plans from $1.44/GB on Cellcard's 4G LTE network. Airalo (8.7/10) is the multi-country alternative. Holafly (8.3/10) is the unlimited-data alternative.
02What separates the top Cambodia eSIM providers?
HelloRoam offers the lowest per-GB rate at $1.44/GB for most travelers in Cambodia. Airalo (8.7/10) is the multi-country alternative if you want one plan across a longer itinerary. Holafly (8.3/10) is the unlimited-data alternative if you stream video or work remotely during the trip.
03What phones support a Cambodia eSIM?
Any unlocked eSIM-compatible phone works with a travel eSIM in Cambodia. Supported devices include iPhone XS and newer, Samsung Galaxy S20 and newer, and Google Pixel 3 and newer. Your phone connects through Cellcard and Smart Axiata, delivering 4G LTE coverage. Carrier-locked phones from AT&T, Verizon, or T-Mobile may need unlocking before use. All five providers we review — HelloRoam, Airalo, Holafly, Saily, and Nomad — support the same device list.
04What does an airport SIM counter add over a Cambodia eSIM?
A travel eSIM at $1.44/GB competes directly with airport SIMs in Cambodia. Local airport plans from Cellcard typically cost $2-5 for 5-20GB / 28 days. The eSIM removes the kiosk queue, passport registration requirement, and SIM swap process — the plan installs before departure and activates on landing. Local airport SIMs can undercut eSIM pricing in some tiers but require in-person purchase and, in some cases, ID registration.
05What happens when a Cambodia eSIM runs beside your regular SIM?
Yes. Most modern phones support dual SIM operation with one physical SIM and one eSIM active simultaneously in Cambodia. Your home SIM keeps your regular phone number for calls and texts. The travel eSIM handles data locally. Switch the default data line in your phone settings without removing your home SIM.
06What activation time does a Cambodia eSIM take?
Activating a travel eSIM for Cambodia takes under 90 seconds from purchase with most providers. You receive a QR code by email within 60 seconds of payment. Scan it in your phone’s cellular settings, label the plan, and set it as your data line when you land in Cambodia. Installation can happen before departure so the plan is ready the moment you arrive.
07What happens when Cambodia eSIM data runs out?
HelloRoam and Airalo both support in-app top-ups that activate within minutes if you exhaust your plan in Cambodia. Purchase additional data through the provider’s app without buying a new eSIM or swapping a SIM card. Alternatively, purchase and install a second eSIM plan alongside the first. Holafly unlimited plans renew each day automatically.
08Is it eSIM, e-SIM, or e SIM?
eSIM, e-SIM, and e SIM all refer to the same technology — an embedded SIM built into your phone. The official industry term is eSIM (embedded SIM), standardized by the GSMA. Whether you search for e-SIM or e SIM, you will find the same digital SIM card technology. No physical card needed.
Cambodia data starts the moment you land
HelloRoam: from $1.44/GB on Cellcard. Activates the moment you land.