Should you buy a SIM card at the airport in Cambodia or online? If you’re traveling to Cambodia in 2025, getting mobile data is a must. This quick guide compares both options to help you choose the most convenient and cost-effective way to stay connected.
I. Why You Need a SIM Card in Cambodia
If you’re traveling to Cambodia in 2025, having mobile data is almost essential. Whether you’re navigating temple routes in Siem Reap, calling a Grab in Phnom Penh, or uploading travel photos — you’ll want a reliable internet connection.
The best way to stay connected? Get a local SIM card or eSIM. It’s much cheaper than international roaming and gives you full control over your data usage.
But the question is: Should you buy your SIM card at the airport, or order it online before your trip?
Let’s compare.
II. Buying a SIM Card at the Airport in Cambodia
Once you land at Phnom Penh (PNH), Siem Reap (REP), or Sihanoukville airport, you’ll see mobile booths from local providers like Smart, Metfone, and Cellcard.
This is the most common choice for travelers who want quick internet access right after arrival.
Pros:
- Immediate access to data — you’re online within minutes
- Staff usually speak English and help with setup
- No need to plan ahead or wait for delivery
Cons:
- Airport prices are usually marked up
- Limited plans (often just tourist bundles)
- You might wait in line, especially during peak arrival hours
- Some staff may upsell unnecessary packages
💡 Typical Price (2025): A tourist SIM from Smart or Metfone might cost $10–$15 for 7–15GB of data, valid for 7 days.
III. Ordering a SIM Card or eSIM Online Before Your Trip
If you prefer to plan ahead, you can order a physical SIM or eSIM online. Many travelers in 2025 choose this option for better pricing and peace of mind.
You can order from:
- SimOptions (physical SIM shipped to your home)
- Airalo, Nomad, or Holafly (instant eSIM via email)
- Klook (pickup or delivery options)
Pros:
- Often cheaper than airport prices
- More variety in data plans and validity
- No language barrier — everything is in English
- With eSIM, no need to remove your current SIM
Cons:
- Requires some planning and setup
- Physical SIMs need to be shipped in advance
- Some eSIMs are data-only (no calls or local number)
💡 Example: Airalo offers a Cambodian eSIM with 5GB for $6.50, valid 7 days — cheaper than airport options.
IV. Buying a SIM Card in the City
Another option is to wait until you reach the city (Phnom Penh, Siem Reap, etc.) and buy a SIM from an official store or local shop.
This is usually the cheapest option, especially for longer stays.
Best for:
- Long-term travelers or digital nomads
- People staying for a month or more
- Those comfortable getting around without the internet immediately
Keep in mind:
- You must bring your passport for SIM registration
- Staff may not speak English well
- You won’t have internet during your first few hours in the country
V. Comparison Table: Airport vs Online vs City
| Feature | Airport SIM | Online SIM/eSIM | Local Shop in City |
| Price | Higher | Lower | Lowest |
| Convenience | Very easy | Needs planning | Less convenient |
| Setup help | Staff assist | Self-setup | May struggle with language |
| Internet on arrival | Yes | Yes (if preloaded) | No |
| Plan variety | Limited | Many options | Full access |
| Best for | First-time visitors | Budget + tech-savvy | Long-term travelers |
VI. Final Recommendation
Both options are good — it depends on your travel style.
Buy at the airport if:
- You want instant internet without thinking too much
- You’re okay paying a few dollars extra for convenience
- You prefer in-person help setting up your SIM
Buy online (especially eSIM) if:
- You want to save money
- Your phone supports eSIM
- You prefer setting everything up before your trip
🧳 Travel tip: If your phone supports eSIM, go with an online eSIM provider like Airalo or Nomad. It’s fast, cheap, and works the moment you land.
VII. FAQs
Can I use eSIM in Cambodia? Yes! Most major providers now support eSIM in 2025. Just make sure your phone is unlocked and eSIM-compatible.
Which is the best mobile provider in Cambodia? The top 3 are Smart, Metfone, and Cellcard. All have decent coverage in cities. Smart is known for fast data.
Do I need to show my passport to buy a SIM? Yes. Passport registration is required by law at airport booths and local stores.
Can I use the SIM card in other countries? Usually not. Cambodian SIMs don’t include international roaming. For multi-country trips, choose a Southeast Asia eSIM.