The best eSIM for Cambodia depends on whether you want a travel data plan ready for arrival or a local mobile number as well. For a Phnom Penh–Siem Reap trip, the useful comparison is the full price for your travel dates, the Cambodian network behind the plan and what you can share with a laptop.
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Quick Verdict
- My default travel-data choice: Ubigi. Its 10 GB / 30-day Cambodia plan costs US$20 and allows data sharing. The 7-day version costs US$18.
- Lowest purchase price in our 10 GB-or-more comparison: Cellcard. Its Traveller eSIM offers 15 GB for 15 days at US$12, with a Cambodian number. Allow for local registration.
- For a different host network: Airalo. Its Cambodia package lists Smart, while several alternatives here use Metfone.
- For heavy phone use: Holafly. Consider its unlimited plan if the price suits your trip, but account for the separate 1 GB-per-day hotspot limit and fair-use terms.
Continuing to Vietnam or Thailand? Skip ahead to the regional-plan comparison: the country list matters more than the name “Asia” or “APAC.”
Table of Contents
Cambodia eSIM Prices for 7- and 14-Day Trips
For a consistent comparison, both trip lengths below use at least 10 GB in total. That is a shopping scenario, not a claim that every traveler needs 10 GB. A longer-validity or larger package still qualifies when it covers the whole trip.
Fixed-data plans for a Cambodia-only trip
| Provider | 7-day trip: at least 10 GB | 14-day trip: at least 10 GB |
|---|---|---|
| Cellcard Traveller | US$12 15 GB / 15 days |
US$12 15 GB / 15 days |
| Ubigi | US$18 10 GB / 7 days |
US$20 10 GB / 30 days |
| Airalo | US$19.50 10 GB / 7 days |
US$20 10 GB / 15 days |
| aloSIM | US$21 10 GB / 30 days |
US$21 10 GB / 30 days |
| Saily | US$23.99 10 GB / 30 days |
US$23.99 10 GB / 30 days |
| Nomad eSIM | US$24 10 GB / 30 days |
US$24 10 GB / 30 days |
Cellcard has the lowest purchase price in this group, provided its registration process works for you. Among the international travel-data options, Ubigi costs least for the 7-day scenario. For two weeks, Ubigi and Airalo both cost US$20; Ubigi gives you a longer validity window, while Airalo uses a different local network.
A lighter user can spend less: Airalo lists 5 GB for 7 days at US$12, and Cellcard offers 7 GB for 7 days at US$7. Those allowances are smaller than the comparison above, so choose them only if they fit your expected use.
Holafly unlimited: a separate purchase decision
| Trip length | Published package | Price (USD) |
|---|---|---|
| 7 days | Unlimited phone data / 7 days | US$27.50 |
| 14 days | Unlimited phone data / 15 days | US$50.50 |
Unlimited phone data can be worthwhile for frequent uploads or streaming, but it does not automatically provide unlimited laptop data. If tethering is the main reason for buying a large plan, compare the sharing allowance before paying more.
How this comparison was made: we checked official product pages and support information for prices, validity, named networks and sharing rules. These are published-plan comparisons, not Cambodian speed tests. Public prices can change, and the recommendations do not imply measured performance at a particular hotel or temple.
Networks in Phnom Penh, Siem Reap and Beyond
Four brands in this comparison list Metfone for their Cambodia plans. Buying two of those brands would not give you two different host networks. Airalo lists Smart, and Cellcard sells service on its own network.
The network and sharing rule behind each Cambodia plan
| Provider | Listed Cambodian network | Hotspot |
|---|---|---|
| Ubigi | Metfone | Allowed; uses your data balance |
| Cellcard Traveller | Cellcard | Not specified on the Traveller page |
| Airalo | Smart | Supported where device and network allow |
| aloSIM | Metfone (Viettel) | Allowed; uses your data balance |
| Nomad eSIM | Metfone | Supported; uses your data balance |
| Saily | Not named on its public Cambodia page | No separate sharing limit advertised |
| Holafly | Metfone | 1 GB per day |
For a Phnom Penh–Siem Reap itinerary, download your map area, accommodation address and onward ticket before the transfer. Treat connectivity around temples, inside buildings and on rural detours as location-dependent; this comparison cannot promise a signal at a particular Angkor site.
If a work call is critical, check the accommodation’s connection and consider a backup using a different host network. For Cellcard, confirm the Traveller package’s sharing terms if laptop use is essential. Our travel eSIM hotspot guide explains the difference between a data allowance and a separate tethering cap.
Seven Cambodia eSIM Options Compared
Ubigi: My Default for a Cambodia Data Plan
Ubigi is an easy recommendation for a trip built around maps, messaging and browsing: 10 GB costs US$18 for 7 days or US$20 for 30 days. For an extra US$2, the longer package gives you room for a delayed arrival or an extended stay.
Both products list Metfone and allow data sharing. Ubigi’s Smartstart starts the package when it connects in a covered destination; the unused plan has a six-month activation window. The eSIM profile is reusable for later purchases.
Choose it for: a competitively priced data package with a generous validity window. Consider another option if: you need a Cambodian phone number, or specifically want a host network other than Metfone.
Cellcard Traveller: Best Value If You Want a Local Number
Cellcard’s US$12 Traveller package includes 15 GB for 15 days, plus 150 minutes and 150 SMS within Cellcard’s network. Its Traveller terms waive the eSIM fee when you buy through the app. Have your passport ready for registration and follow the document requirements in that purchase flow.
The plan does not renew automatically, unused allowances do not roll over, and pay-as-you-go charges can apply after the bundle runs out. Monitor the balance instead of assuming data simply stops.
Choose it for: local service and a Cambodian number at a low bundle price. The included calls are on-net, so they do not cover every Cambodian number. Registration is the main extra step compared with buying a travel data package.
Airalo: A Useful Alternative on Smart
Airalo’s Cambodia plans use Smart, which makes them worth considering if your other option runs on Metfone. That is a network distinction, not evidence that one will be faster at your hotel.
The 10 GB / 7-day package costs US$19.50; 10 GB / 15 days costs US$20. For a two-week trip, the latter matches Ubigi’s price but has a shorter validity window. Airalo also has smaller allowances if you expect to spend much of your time on Wi-Fi.
Choose it for: a Smart-backed travel data plan or a familiar Airalo setup. Its hotspot guidance makes sharing conditional on device and network support; follow any APN instructions supplied with the plan.
aloSIM: Fixed Data With an Optional App-Based Number
aloSIM lists 10 GB for 30 days at US$21, using Metfone (Viettel) with LTE service. Hotspot sharing is supported and draws from the same allowance. That makes it a close price alternative to Ubigi if you already prefer aloSIM.
Its phone-number promotion needs a careful distinction: the eligible Hushed offer provides a US or Canadian number through a separate calling app. It does not turn this Cambodia data eSIM into a Cambodian voice-and-SMS line.
Choose it for: straightforward prepaid data with supported tethering, especially if the Hushed offer is useful to you. Choose a local operator if a Cambodian number is the priority.
Nomad eSIM: Convenient if You Already Use Its App
Nomad eSIM’s Cambodia plan offers 10 GB for 30 days at US$24, with Metfone listed for 4G service. The base price is higher than Ubigi’s, so the reason to choose it is more likely an existing Nomad setup or a preference for managing future trips in the same app.
The plan starts on connection to a supported network, or automatically after 60 days. Avoid buying far ahead of a trip without accounting for that deadline. Hotspot is supported, with usage taken from your data balance.
The reader code below brings an eligible US$24 purchase to US$20.40, calculated at 15% off. For a cross-border route, check the separate APAC products described later; a Cambodia-only balance does not cover Vietnam or Thailand.
Nomad eSIM · Reader offer
Save 15% on your first eligible Nomad eSIM purchase
MYTECHGUIDE15
Use our link and enter the code for your first eligible purchase. Single use. Excludes plans under US$5, sale plans, add-ons, unlimited plans and Thailand 50 GB. Cannot be combined with a trial.
Saily: For Travelers Who Value Its Security Features
Saily lists 10 GB for 30 days at US$23.99. Its Cambodia page advertises unrestricted hotspot sharing from the purchased allowance, but does not name the local host network. If knowing that network is central to your choice, the other listings provide more detail.
The app includes features such as ad blocking and web protection. These are the main reasons to consider Saily alongside its data service; the standard 10 GB price is higher than several alternatives here.
Activation normally happens when you connect in the destination, with automatic activation after 180 days if the plan has not started. Choose it for: the app’s security features and simple sharing rules. The Cambodia data plan does not include a Cambodian phone number.
Saily · Reader offer
Save 10% on Saily with MYTECHGUIDE
MYTECHGUIDE
Follow our Saily link and enter MYTECHGUIDE at checkout for 10% off.
Holafly: Unlimited Phone Data, With a Tethering Limit
Holafly’s published Cambodia prices include US$27.50 for 7 days and US$50.50 for 15 days. The plan lists Metfone and is sold as unlimited phone data, while hotspot sharing is limited to 1 GB per day.
That distinction matters if a laptop will do most of the work. A fixed-data package with unrestricted sharing of its allowance may suit you better, even when its headline allowance looks smaller.
Holafly’s fair-use explanation allows temporary speed reductions. A Cambodia-specific high-speed threshold was not stated in the information checked, so do not read “unlimited” as a full-speed guarantee. Choose it for: heavy use on the phone when you accept those limits and the higher price.
One eSIM for Cambodia, Vietnam and Thailand?
For a trip such as 7 days in Cambodia, 4 in Vietnam and 3 in Thailand, a regional package can keep one data balance working across borders. These three examples cover that route; they are a shortlist for this itinerary, rather than a full ranking of every Asia product.
Regional examples that include Cambodia, Vietnam and Thailand
| Exact product | 10 GB / 30 days | What to check |
|---|---|---|
| Ubigi BEST ASIA | US$28 | All three countries included |
| Nomad eSIM APAC — 21 countries | US$31 | Select the 21-country product |
| Saily Asia and Oceania | US$35.99 | All three countries included |
Ubigi’s regional option costs US$8 more than its 10 GB / 30-day Cambodia plan. That extra buys coverage for the onward countries; it adds little value if you are staying entirely in Cambodia.
Watch the Nomad country list. The APAC 14-country package checked does not include Cambodia. The separate 10 GB / 30-day APAC 21-country product does include Cambodia, Vietnam and Thailand. These versions have different country lists: the 21-country version also omits Singapore, so it is not simply the 14-country package with seven extra stops.
For an eligible first purchase, the regular US$31 Nomad APAC price calculates to US$26.35 with MYTECHGUIDE15. The code terms above still apply. This APAC product also lists a service restriction in Thailand’s Pattani, Narathiwat and Yala provinces, plus Chana, Na Thawi, Thepha and Saba Yoi districts.
A regional plan can start when it first connects in any included country, including an earlier stop. Count validity from that connection, not automatically from your arrival in Cambodia. For more routes, see our Southeast Asia eSIM comparison; for longer single-country stays, compare the Vietnam and Thailand eSIM guides.
Plan Your Data and Set Up Before Arrival
Start with your own phone’s usage history. As a planning example, a budget of 0.5 GB per day comes to 3.5 GB over a week or 7 GB over two weeks, before a safety margin. This is an allowance you set yourself, not a measured average for travelers.
Video, cloud photo backups and laptop updates can change that budget quickly. Use hotel Wi-Fi for large transfers and consult our travel data usage guide if you are deciding between a small package and 10 GB or more.
- Check the exact phone model. It must support eSIM and be unlocked for another carrier.
- Install with stable internet. Follow the provider’s app or QR-code instructions and keep the installation details accessible.
- Read the activation rule. Installation and the start of paid validity are not always the same event. Watch the purchase-to-activation deadlines described above.
- Select the travel line for mobile data. Turn off data roaming on your home line and disable automatic data switching if you want to keep data use on the travel package.
- Follow the travel provider’s roaming instructions. Enable roaming on that line when required, then test a webpage before leaving airport or hotel Wi-Fi.
- Check the remaining balance. Top up or renew before you run out if needed; the Cellcard bundle’s pay-as-you-go behavior deserves particular attention.
Our guide to when to buy a travel eSIM covers the difference between buying, installing and activating. For iPhone-specific line settings, Apple’s international eSIM guide explains how to choose the data line.
Final Verdict: Which Cambodia eSIM Would I Choose?
For a Cambodia-only trip, I would start with Ubigi’s 10 GB / 30-day plan: its US$20 price and longer validity make it a practical default. A strict one-week trip can use the US$18 version, while Airalo is worth choosing at a similar price if you want Smart as the host network.
If a Cambodian number and low bundle cost matter more, Cellcard Traveller deserves a close look, with registration and post-bundle charging factored into the decision. Holafly is the separate option for heavy phone use; its daily hotspot limit prevents it from being an automatic pick for laptop work.
For Cambodia–Vietnam–Thailand, compare the exact regional products above and count the whole journey from first activation. For your next destination, browse our eSIM guides by destination or our broader guide to the best eSIMs for international travel.
Frequently Asked Questions
Will a travel eSIM change my WhatsApp number?
Adding a data eSIM does not itself change the number registered to your existing WhatsApp account. Keep that account and use the travel eSIM for internet access; you do not need to register a new account just to change the data connection.
Can I keep my home number for bank texts?
On a compatible dual-SIM phone, you can keep the home line enabled while using a travel eSIM for data. Receiving bank messages still depends on your home carrier’s roaming support. Check its charges and settings: turning off home-line data roaming does not disable every other roaming service.
Can I keep the eSIM for my next trip?
That depends on the provider. Ubigi explicitly offers a reusable eSIM profile for later plans. Keeping the profile does not extend an expired allowance or make a Cambodia-only package work in another country; buy the appropriate new plan.
What if my phone does not support eSIM?
You will need another connection option, such as a physical local SIM in an unlocked phone with a SIM tray, or your home carrier’s roaming. Check compatibility before buying: downloading an app cannot add eSIM hardware support to a phone.