Three Providers
| Provider | Speed | Coverage | Best For |
|---|---|---|---|
| Cellcard | Fastest (22 Mbps avg) | Urban-focused | Speed junkies |
| Smart | Fast (18.8 Mbps avg) | Good urban | Best tourist SIM deal |
| Metfone | Moderate (13 Mbps avg) | Best rural coverage | Traveling to provinces |
Best Tourist SIM
Smart Traveller SIM — the top pick for most visitors:
- Price: $5
- Data: 30GB over 15 days
- Includes: Local calls and texts
- Where to buy: Carrier booths in arrivals at Techo International Airport (Phnom Penh) and Siem Reap–Angkor International Airport
- Requires: Passport (for registration)
eSIM Option
If your phone supports eSIM, providers like Airalo and Holafly offer Cambodia data plans. Convenient if you want to keep your home number active.
- Airalo: ~$5 for 1GB/7 days, ~$14 for 5GB/30 days
- Holafly: Unlimited data plans from ~$19 for 5 days
5G Coverage
Cambodia launched commercial 5G on 1 January 2026 via Cellcard, Smart, and Metfone. Phnom Penh, Siem Reap, and around 14 provinces were covered at launch, with build-out to the remaining provinces continuing through 2026. Elsewhere you'll be on 4G. Actual speeds vary by location.
WiFi
- Most hotels, cafes, and restaurants in tourist areas have free WiFi
- Coworking spaces offer reliable 100+ Mbps connections
- Rural areas: WiFi is rare; rely on mobile data
Tip: Get your SIM card at the airport immediately after immigration. You'll need it to register for PassApp (the ride-hailing app) and to have navigation/maps working.