Buying a SIM Card at Siem Reap International Airport: What Indian Travelers Get
✅ Last verified on-the-ground: 2026-07-22
Siem Reap-Angkor International Airport (REP) opened in late 2023, and the terminal is small enough that the SIM card situation is simple: one set of telecom counters sits just past customs, you walk up, you walk out with a working SIM in about 10 minutes. The complication is everything else: whether your Indian phone will fire up on Cambodia’s networks, whether the airport price is fair, whether you should pay the small premium for the convenience, and whether it makes more sense to just wait until Phnom Penh. Here is exactly what lands in your hand, what it costs, and how to skip the parts that waste your money. For related planning, see our guides on Sea Backpacking Hub and Are Electronics Cheaper in Cambodia.
This guide is written for Indian backpackers flying into Siem Reap on a short Angkor Wat trip, with Cambodia’s two big carriers (Smart Axiata and Cellcard), airport counter pricing, eSIM compatibility, and the real choice between buying at REP versus waiting for Phnom Penh International (PNH). You may also find Best Travel Gear Cambodia Backpackers useful for this trip.
Quick Answers
| What | Answer | Price (INR) |
|---|---|---|
| Tourist SIM cost at REP airport | 7-day tourist SIM with ~10GB data | 3 USD (~12,500 KHR) |
| Which carriers run airport counters | Smart Axiata and Cellcard | Both counters in arrivals hall |
| Indian phone compatibility | Most Indian-bought phones work on 4G/LTE | Check band 3 (1800 MHz) and band 1 |
| Airport SIM vs town SIM | Airport is about ₹96-₹193 (~1-2 USD) more than town | Same SIM, same network |
| eSIM for Indian travelers | Works on most 2022+ Indian phones | Activate before flight or at airport WiFi |
Prices on this table are in Cambodian riel (KHR). At the airport counters, you’ll pay in USD cash, and the USD prices are what the staff will quote you. 1 USD = ₹96.5289 at time of writing.
What You Find at REP Airport
The arrivals hall at Siem Reap-Angkor International Airport is one big open room, and the telecom counters are right at the exit, past baggage claim and customs, before you reach the taxi and tuk-tuk queue. Two operators run permanent stalls: Smart Axiata (the biggest network in Cambodia by coverage) and Cellcard (the second largest, with slightly cheaper tourist packs). Both sell the same standardized “tourist SIM” that every licensed vendor in the country offers: 7 days, roughly 10GB of data, plus some local minutes. The SIM is pre-registered with your passport, which is mandatory under Cambodian telecom rules.
You will need your passport (for the registration form) and cash in USD. The official price posted at the counter for the standard tourist SIM is ₹289 (~3 USD), but budget for ₹482 (~5 USD) if you want a beefier data pack (15-30 days, 20-30GB). Some travellers report being quoted ₹482 (~5 USD) for the basic 7-day pack when they asked for “more data” without specifying a different plan, so be specific about which plan you want. Cards are accepted at the bigger Smart counter but not at Cellcard, and the connection can drop during the transaction, so USD cash is the safe move.
The whole process takes about 8-12 minutes from queueing to walking out with a working SIM. The staff will swap your Indian SIM into a phone, confirm signal bars, and hand you back both the new SIM card (in case you swap phones) and your original SIM tray. Activation is automatic on first network connect, so by the time your Grab or tuk-tuk pulls out of the airport, you should already have data.
Subodh’s Pro Tip: Take a photo of your Indian SIM’s ICCID number (printed on the card) before you hand it over. If anything goes wrong, you can prove ownership and get a replacement at any Airtel or Jio store back home without your line being blocked.
Smart Axiata vs Cellcard: Which to Pick
Both carriers use the same Cambodian network infrastructure standards and offer the same tourist SIM SKU at the airport. The real difference comes down to coverage outside Siem Reap town. Smart Axiata is the dominant carrier and has stronger 4G/LTE signal on the roads to Angkor Wat, on the highway toward Battambang, and across most of southern Cambodia (Sihanoukville, Koh Rong, Kampot). Cellcard is fine inside Siem Reap and Phnom Penh but drops to 3G or no signal in some rural temple sites, which is exactly where you need data most.
For an Indian backpacker whose main stops are Siem Reap, Angkor Wat, and a bus south toward Phnom Penh, Smart Axiata is the safer pick. For someone spending most of the trip in Phnom Penh and not venturing far, Cellcard is fine and the basic SIM is sometimes 1 USD cheaper.
The other practical difference: Smart Axiata has a much better app (the “Smart Nas” app, downloadable on airport WiFi) that lets you top up data, check balance, and renew plans without speaking Khmer. Cellcard’s app is functional but the English support is patchier. For most Indian travelers who don’t read Khmer script, the Smart app is the difference between managing your data yourself and walking to a vendor every time you run out.
eSIM: Does It Work on Indian Phones?
Yes, for most Indian phones bought in 2022 or later. Indian iPhones (iPhone XS and newer) and most Android flagships sold in India in the last three years (Samsung Galaxy S series, OnePlus, Nothing, Pixel, Xiaomi flagship line) have eSIM capability, and Cambodia’s two carriers both offer eSIM activation for tourists. The catch: you need an internet connection to download the eSIM profile, which means either buying a cheap data pack on a physical SIM first, using the airport’s free WiFi (which is slow but functional), or activating the eSIM before you leave India.
There is no practical difference in price between physical and eSIM at REP airport for the standard tourist pack. The real reason to consider eSIM is if you want to keep your Indian Jio or Airtel SIM active for WhatsApp messages home while using a Cambodian number for data. Dual-SIM dual-standby works fine on most modern Indian phones, and the eSIM slot is usually SIM 2 while the physical nano-SIM slot holds your Indian line.
If your phone is older than 2020, doesn’t have eSIM hardware, or is a budget Xiaomi/Realme model with locked bands, skip eSIM and buy the physical SIM at the airport counter. The physical SIM works in every phone, no compatibility drama.
Get Nomad eSIM is the alternative for travelers who want to land with data already running, before they even reach the SIM counter.
Airport SIM vs Phnom Penh: Is It Worth Waiting?
No, not if you’re flying directly into Siem Reap. The Siem Reap airport premium is small (₹96-₹193 (~1-2 USD) on the basic tourist pack), the convenience is huge (you walk out with data, your Grab driver can reach you, Google Maps works for the hotel address), and there is no realistic way to “wait” if Siem Reap is your first stop. You land, you need a SIM, you buy the SIM.
The comparison gets interesting if your itinerary is Bangkok → overland → Siem Reap, or if you’re flying Bangkok → Phnom Penh → Siem Reap on a separate domestic hop. In those cases, you could pick up a SIM in Phnom Penh for a slightly lower price at a downtown Cellcard or Smart shop (₹193 (~2 USD) for the same tourist pack, sometimes with a small “first-time tourist” promo discount). But the savings are 1 USD, the downtown shop still requires your passport and a 10-minute process, and you’re trading the convenience for a sum that won’t even cover a coffee.
The one scenario where waiting makes sense: you’re flying into Bangkok or Ho Chi Minh City first, picking up an eSIM or local SIM there, and crossing into Cambodia overland at a land border. In that case, your existing SIM will roam (expensive) or you can buy a Cambodia SIM at the border town. But this article assumes you’re flying directly into Siem Reap.
Safety Alert: Buy your SIM only from the official Smart Axiata or Cellcard counters inside the terminal. Vendors in the parking lot or at the tuk-tuk pickup area sometimes sell unofficial or already-registered SIMs, and these will get throttled or cut off within a few days when the carrier’s system flags the duplicate registration.
What About Other Cambodian Airports?
The two airports Indian backpackers use are REP (Siem Reap-Angkor International) and PNH (Phnom Penh International). Sihanouk International (KOS) is small, serves mostly domestic flights, and has the same two carrier counters with the same prices.
Phnom Penh airport (PNH) is the bigger terminal, with more carrier options (Smart Axiata, Cellcard, and sometimes Metfone), slightly more competitive airport pricing because the bigger tourist volume means more competition at the counter, and a longer walk from gate to SIM counter. If your trip starts in Phnom Penh, the SIM situation is even easier than Siem Reap: more counters, same pricing, more English-speaking staff.
For travelers connecting through Bangkok or Kuala Lumpur, transit airports do not sell Cambodia SIMs, and roaming from your Indian Jio/Airtel line on a Cambodia trip is prohibitively expensive (Jio’s “international roaming” packs run ₹500-₹800 (~$5.19-$8.30) per day for limited data, which adds up to ₹15,000-₹25,000 (~$155.70-$259.50) over a 10-day trip). Local SIM is always cheaper.
How Much Data You Need
A 7-day Siem Reap-focused trip with Angkor Wat temple visits uses about 5-8 GB of mobile data for a typical Indian backpacker: Google Maps for navigation, Grab and PassApp for tuk-tuks, WhatsApp calls home, social media, and translation. The 10GB on the standard tourist SIM is comfortable. If you’re adding a bus journey south to Phnom Penh and several days there, jump to the 15-day or 30-day pack with 20-30 GB, which runs ₹482-₹674 (~5-7 USD).
Top-up is straightforward: at any Smart Axiata or Cellcard shop in town (both brands have stores in Siem Reap’s downtown near Pub Street), or via the Smart Nas / Cellcard app with a foreign credit card. Carry USD cash if you’re topping up in person, since card terminals in smaller towns sometimes fail on Indian-issued Visa/Mastercard.
Practical Tips from the Terminal
Passport is non-negotiable. Cambodian law requires every SIM to be registered to a passport number, and the staff at the airport counter will photocopy or photograph your passport page before activating the SIM. You cannot skip this step, and you cannot buy a SIM without your passport in hand. Keep it accessible in your carry-on, not buried in checked luggage.
Card activation takes 2-3 minutes after the staff inserts the SIM. Don’t panic if you see “No Service” for the first minute. The system has to push your registration through, and the activation confirmation SMS sometimes arrives after you’ve already left the airport. As long as the signal bars appear on screen, you’re good.
Keep the SIM card holder. It has your new Cambodian phone number printed on it, which you’ll need to give to hostels, tuk-tuk drivers, and any local contact. Lose this and recovering the number requires a visit to a carrier shop with your passport.
If your phone doesn’t pick up signal after 5 minutes, ask the counter staff to manually select the network (Settings → Mobile Network → Network Selection → switch from Automatic to Smart Axiata or Cellcard manually). This is a common fix for Indian phones that default to a wrong APN setting.
Where to Eat While Waiting for Activation
Most Indian travelers land at Siem Reap hungry, especially on the Bangkok-Sihe Reap morning flights. The airport has limited food inside the secure area, and the cafes in the arrivals hall are tourist-priced. If your SIM activates quickly, walk out and grab a tuk-tuk into town (₹482-₹674 (~5-7 USD), 30 minutes to Pub Street area) where the food scene is much better and much cheaper.
For Indian food in Siem Reap, Paratha House & Academy Siem Reap is the highest-rated option with main courses running ₹289-₹771 (~3-8 USD), including Hyderabadi dum biryani and other Pakistani/Indian dishes in casual portions. Dakshin’s restaurant Siemreap is the South Indian fallback for dosas and idli when you’re tired of rice and curry. Both are near the downtown area, not at the airport.
For local Cambodian food, Street Three Eatery Siem Reap does a strong street-food-style Asian menu, and Phare, The Cambodian Circus is more of an evening activity than a meal but pairs well with a dinner booking in the same district.
Connectivity Beyond the SIM
Cambodia’s 4G/LTE is solid in cities and on major highways, weaker in rural temple complexes and on remote islands. WiFi is free and reasonably fast at most hostels and cafes in Siem Reap, Phnom Penh, and tourist areas of Sihanoukville. The main connectivity issues Indian travelers report are:
- Slow internet during rainstorms (the monsoon months, June to October, see measurable network slowdowns)
- Dead zones in some Angkor Wat temple clusters, especially Banteay Srei and the outer sites, where 4G drops to 3G or no signal
- Power cuts in smaller towns (Kampot, Battambang, Koh Rong), which knock out both WiFi and cell towers for 1-3 hours at a stretch
A backup offline strategy helps: download Google Maps areas before leaving WiFi, screenshot important bookings, and keep your eSIM or second SIM on a different network as redundancy if you have a dual-SIM phone.
For more on Cambodia connectivity, the Cambodia WiFi, VPN & Power Outage Guide covers the practical side of staying online, and the Cambodia Travel Essentials for Indian Tourists page covers SIM, vaccinations, and safety in one place.
FAQ
Can I use my Indian Jio or Airtel SIM in Cambodia? Yes, but international roaming is expensive. Jio’s daily international pack runs around ₹500-₹800 (~$5.19-$8.30) for limited data, which adds up fast. Airtel’s similar packs are in the same range. For a 7-10 day Cambodia trip, a local SIM is 5-10x cheaper.
Is the SIM card price the same if I pay in USD or KHR? Airport counters quote in USD and accept USD cash with no conversion markup. If you pay in KHR, the rate is usually the same (₹297 (~12,500 KHR or ~$3.09) for the ₹289 (~3 USD) SIM) but check the math before handing over riel, since some vendors round up.
What if my phone is locked to an Indian carrier? Most Indian phones sold after 2020 are factory unlocked, but if yours is locked to Jio, Airtel, or Vi, it will not accept a foreign SIM. You can get it unlocked at any carrier store in India with your ID and bill. The process takes 1-2 hours and is free for postpaid, sometimes a small fee for prepaid.
Does the 10GB tourist SIM include hotspot/tethering? Yes, both Smart Axiata and Cellcard allow hotspot on the tourist SIM. Speeds are throttled to 5 Mbps after the first 5GB on some packs, which is fine for WhatsApp and maps but slow for video calls.
Can I top up with an Indian credit or debit card? Yes on the Smart Nas and Cellcard apps, but the transaction sometimes fails on Indian-issued Visa/Mastercard due to international processing glitches. USD cash top-up at a carrier shop is the most reliable method.
Is the airport SIM locked to one device? No, you can swap the SIM into any unlocked phone and it keeps working. The registration is tied to your passport, not the device IMEI.
Should I get a SIM if I’m only in Cambodia for 2-3 days? Yes, even for a short trip. The 7-day tourist SIM is ₹289 (~3 USD) and gives you maps, translation, and Grab access for your whole stay, which is more useful than saving the ₹289 (~3 USD) and asking strangers for directions.
Subodh’s Take
The airport SIM premium is a classic backpacker dilemma, and the honest answer is: it’s not worth improving. ₹96-₹193 (~1-2 USD) saved by skipping the airport and hunting a downtown shop is not a meaningful budget win, and the convenience of landing with working data is one of those small upgrades that makes the first day of a new country feel less chaotic. Buy the SIM at the airport, choose Smart Axiata for the wider coverage, keep your Indian SIM safe, and spend your mental energy on planning the Angkor sunrise instead. Cambodia’s telecom game is straightforward: no roaming tricks, no contracts, no surprises. The hardest part is keeping your phone unlocked, which you should have sorted before you left India.
