Home›Blog›Cambodia

🇰🇭

Asie · 2026

Cambodia eSIM 2026: Angkor, Phnom Penh, Tonlé Sap

📖 8 min•🛕 Cambodia•The Alosea team•Updated 2026-05-28

Planning a trip to Cambodia (Kingdom of Cambodia, 181,035 km² in the heart of the Indochinese peninsula between Thailand, Laos and Vietnam, ~17 million inhabitants), a 5-7 day Angkor Wat circuit, a rainy-season Tonlé Sap exploration, a memorial visit to Phnom Penh, or a classic 3-week Thailand-Cambodia-Vietnam combo? Cambodia — populated since prehistory, peak of the Khmer Empire between the 9th and 15th century (Angkor capital until 1431), French protectorate 1863-1953, independence proclaimed by Norodom Sihanouk, civil war 1970-1975, Khmer Rouge genocide of Pol Pot 1975-1979 (~1.7 to 2.2 million deaths, ¼ of the population), slow UN-led reconstruction (UNTAC 1992-1993), constitutional monarchy since 1993 (King Norodom Sihamoni since 2004), world's 1st UNESCO site with Angkor Wat — concentrates Angkor Wat (the world's largest religious monument, 162.6 ha, built around 1113-1150 by Suryavarman II), Bayon and its 216 enigmatic stone faces, Ta Prohm engulfed by jungle (made famous worldwide by Tomb Raider in 2001), Tonlé Sap lake (Southeast Asia's largest freshwater lake which REVERSES its flow direction each season), Phnom Penh the capital (Royal Palace 1866, Tuol Sleng Genocide Museum S-21, Choeung Ek Killing Fields), colonial Battambang with its bamboo train. To use PassApp/Grab, Google Maps in the Angkor ruins, WhatsApp to share sunrise photos at the main temple, your smartphone will be central. HEADS-UP: Cambodia is OUTSIDE the EU — non-EU roaming is expensive. An eSIM activated BEFORE boarding gets you connected as you walk off the plane at PNH or REP.

› WHY AN eSIM

Why an eSIM for Cambodia

Cambodia is OUTSIDE the European Union. Non-EU roaming on a home plan is expensive. An Alosea eSIM = a few euros to stay connected throughout, photograph Angkor at sunrise and share in real time, with no bill shock on your return. Your home number remains active to receive banking validation SMS (very useful in Cambodia where USD and credit cards are mixed). Installation in 2 min via QR scanned from your computer or another phone. Cambodia has solid nationwide 4G coverage (Smart, Cellcard, Metfone) including around the Angkor temples and the Tonlé Sap, and 5G has been launched in Phnom Penh. And concretely on arrival at Phnom Penh (PNH) or Siem Reap (REP, new SAI airport opened October 2023, 40 km from the city)? You can buy a Smart, Cellcard or Metfone physical SIM at the carrier counters, but expect to pay around €10 just for the SIM card itself — on top of the data plan, not counting the minutes lost filling passport registration forms. With an Alosea eSIM, you walk off the plane already connected for PassApp (Cambodian Grab), Google Maps to your Siem Reap hotel, or WhatsApp to reassure family.

› HOW MUCH IT COSTS

Travel eSIM pricing

A Cambodia travel eSIM sits in an accessible price range — well below non-EU roaming fees which can reach several euros per megabyte depending on your home carrier. Price depends on data volume (5 GB for 3-5 days Angkor focus, 7-10 GB for 1 week combining Siem Reap + Phnom Penh, 15-20 GB for 2-week full circuit), validity (7/15/30 days) and regional coverage (Cambodia alone or multi-country SE Asia).

› DATA GUIDE

How many GB do you need?

Short trip 3-5 days (Angkor express)

PassApp, Maps temples, Angkor Wat sunrise photos

5 GB

1 week (Siem Reap + Phnom Penh)

Classic combo with domestic flight or bus

7-10 GB

2 weeks (full circuit + Tonlé Sap + Battambang + coast)

Immersive trip with regular sharing

15-20 GB

Long stay / digital nomad / volunteering

Remote work from Siem Reap or Kampot, NGOs

Unlimited

› COVERAGE & OPERATORS

Network coverage and local carriers

Cambodia has had solid nationwide 4G coverage since 2018, deployed by three national operators: Smart Axiata (leader with ~50 % market share, owned by Malaysian Axiata group), Cellcard (Royal Group, founded 1996, country's first historical operator), and Metfone (subsidiary of Vietnamese Viettel, strong rural network). 5G has been LAUNCHED in Phnom Penh (Smart leading, progressive rollout since 2023). Angkor Wat and all main temples of the archaeological park are 4G-covered (useful for Maps to locate you in the maze of ruins), as well as Siem Reap, Tonlé Sap lake (including Kampong Phluk floating villages), Battambang, Sihanoukville and the coast. Remote north-east zones (Ratanakiri, Mondulkiri): partial 3G/4G. An Alosea travel eSIM automatically uses the best available carrier based on your location.

Local operators

› PRACTICAL TIPS

Practical travel tips

Visa & passport

Cambodia is OUTSIDE the EU. For UK, US, EU, Canadian, Australian passports and most nationalities: VISA REQUIRED. Two simple options — (1) e-Visa online via the official site evisa.gov.kh (ONLY this site, beware fake sites that overcharge), $36 USD, 3 business days processing, valid 30 days, print 2 copies, valid for the 3 international airports and 3 land border crossings. (2) Visa on arrival (VOA) directly at the airport or border, $30 USD paid in cash USD (bring new bills without markings), 1 passport-size photo required, valid 30 days. e-Visa skips the queue. Passport 6 months minimum validity + 2 blank pages. Extension possible on-site via agency (T-tourist visa 30-day extension).

Source ↗

Currency

Cambodian Riel (USD widely accepted) (KHR ៛)

Time zone

GMT+7 year-round (Cambodia Time, ICT). NO DST. Same time zone as Thailand, Vietnam, Laos.

Power outlets

Mix of type A (2 flat pins, American), C (2 round European pins) and G (3 rectangular pins, UK) sockets depending on hotels and venues. UNIVERSAL ADAPTER STRONGLY recommended. 230 V, 50 Hz. Occasional power outages in some rural areas — bring a power bank.

Climate & best season

Tropical monsoon climate. DRY SEASON November-April (IDEAL for travel): November-February cool and dry (25-30°C, perfect for Angkor on foot), March-April scorching (35-40°C, sweat guaranteed at the temples). RAINY SEASON May-October: short but intense tropical showers late afternoon, Tonlé Sap reaches its maximum level (spectacular floating village landscapes), Angkor surrounded by full moats and lush vegetation but muddy, July-August heaviest rains. Tourist peak is December-January (hotel booking recommended).

Health & vaccines

No mandatory vaccines for European travellers (except yellow fever if coming from endemic country). HIGHLY recommended: hepatitis A and B, typhoid, rabies (rural areas or animal contact), Japanese encephalitis (rainy season, prolonged rural stays). DTP update. EHIC/GHIC NOT valid in Cambodia — travel insurance MANDATORY (private care in Phnom Penh or repatriation to Bangkok costs a lot). Malaria in border rural zones (not Angkor, not Phnom Penh) — chemoprophylaxis depending on zone. Dengue present year-round (peak in rainy season) — DEET 30 %+, long sleeves at dusk.

› CULTURE & ETIQUETTE

Culture and best practices

Greetings

Traditional Khmer greeting: the SAMPEAH — palms joined in front of the chest while slightly bowing the head (the higher the hands, the greater the respect: chest for equals, mouth for elders/teachers, forehead for monks, top of head for Buddha or the king). Say « Choum Reap Sour » (formal hello) or « Sou Sdey » (informal hello). Touching the head is TABOO (seat of the soul). Pointing your feet at someone or at a Buddha statue is OFFENSIVE. Older generation often speaks French (protectorate heritage), younger generations English. Ubiquitous Khmer smile — patience and calm are cardinal virtues, never raise your voice.

Tipping

Tipping has become customary in tourist areas (Siem Reap, Phnom Penh), not mandatory but VERY APPRECIATED as wages are low. Restaurants: 5-10 % if no service charge. Angkor guides: $5-10 USD/day depending on quality. Long-distance tuk-tuk drivers: $2-5 USD for the day. Hotel porters: $1 USD/bag. Massages: $1-2 USD. Tips are given in USD (preferred over riel for small change).

Dress code

In Cambodia, modesty MANDATORY in temples and sacred places (Angkor Wat, Bayon, all active wats, Royal Palace) — SHOULDERS and KNEES MUST be covered (otherwise refused at the entrance), even in hot weather. Bring light trousers or long skirt + sleeved t-shirt. At Angkor Wat the upper level (Bakan) imposes strict covering dress. Bare feet in all active temples (easy-to-remove sandals are practical). In town and beach, free dress.

Religion

Theravada Buddhism at 97.1 % (state religion since 1989), same school as in Thailand, Laos, Sri Lanka and Burma. Small Muslim communities (Chams, ~2 %), Christian (~0.5 %) and animist (tribal minorities of the north-east). Religion deeply structures daily life: pagodas (wats) in every village, saffron-robed monks who collect morning alms (Bin Bat), numerous Buddhist festivals (Chol Chnam Khmer New Year mid-April, Pchum Ben Ancestors' Day September-October, Bon Om Touk Water Festival November).

Languages

Khmer (official language, script descending from an Indian-origin alphabet unique in Southeast Asia, 33 consonants 24 vowels) · French (1863-1953 protectorate heritage, spoken by 60+ generation and administrative circles) · English (tourism lingua franca, spoken by younger generations) · Vietnamese and Chinese (urban minorities)

Useful phrases

Sou Sdey — Hello (informal)
Choum Reap Sour — Hello (formal, with sampeah)
Orkun — Thank you
Sok Sabai — How are you? / I am well
Tlay ponman? — How much does it cost?

› MUST-SEE PLACES

Top iconic places

Angkor Wat (UNESCO 1992)

The world's largest religious monument (162.6 hectares enclosed, ~228 football pitches), built between 1113 and approximately 1150 by King Suryavarman II at the peak of the Khmer Empire. Initially dedicated to Hindu god Vishnu, transformed into a Buddhist temple at the end of the 12th century (never abandoned since, unlike most Khmer temples). Five lotus-shaped towers representing the sacred Mount Meru, immense 190 m-wide surrounding moat, 800 metres of bas-reliefs telling the Ramayana, Mahabharata, the legend of the Churning of the Sea of Milk. Featured on the CAMBODIAN NATIONAL FLAG (the only country in the world whose flag depicts a monument). UNESCO World Heritage site since 1992. Angkor pass mandatory: $37 USD 1 day, $62 USD 3 days (usable over 10 days), $72 USD 7 days (usable over 1 month).

Angkor Wat was rediscovered for the West in 1860 by FRENCH naturalist Henri Mouhot, who published his drawings in Le Tour du Monde — but the temple had NEVER been forgotten by Cambodians nor by the Buddhist monks who had occupied it without interruption for 800 years. The École française d'Extrême-Orient (EFEO) led the first major restorations from 1907, and the French archaeological effort continues today with an international team. The sunrise (sun rising behind the 5 towers reflected in the north water basin) is one of the most Instagrammed images in the world — you need to arrive by 5am with a headlamp to get a good spot.

Wikipedia ↗

Bayon and Angkor Thom

At the heart of the royal city of Angkor Thom (9 km² fortified city built by Jayavarman VII at the end of the 12th century, accessible by 5 monumental gates with giants pulling the Naga serpent), BAYON temple is famous for its 54 towers bearing 216 monumental stone faces — serene-smiling faces which could represent King Jayavarman VII himself merged with the bodhisattva Avalokiteshvara. Bas-reliefs tell both epic battles against the Chams and scenes of daily Khmer life (markets, cockfighting, childbirth). In Angkor Thom also see Baphuon, Phimeanakas, Elephants' terrace and Leper King's terrace.

The 216 faces of the Bayon have long been debated by archaeologists: do they represent King Jayavarman VII (first Khmer ruler convinced of Mahayana Buddhism), the bodhisattva Avalokiteshvara (incarnation of universal compassion), or both merged together in a mystical sovereign-divinity identification? The current majority theory favours the latter interpretation. The « Khmer smile » of the Bayon faces has become a national symbol, studied for its almost-Mona-Lisa ambiguity by art historians.

Wikipedia ↗

Ta Prohm (the Tomb Raider temple)

Built in 1186 by Jayavarman VII as a Buddhist monastery dedicated to his mother. TA PROHM temple was DELIBERATELY left in the state in which it was rediscovered by the EFEO, that is, literally strangled by the jungle — huge silk-cotton trees (Tetrameles nudiflora) and strangler figs (Ficus gibbosa) whose gigantic white roots wrap around the walls, galleries, pediments. Mysterious, photographic atmosphere. Made famous worldwide by the film Tomb Raider (2001) with Angelina Jolie partly shot here — Cambodian tourism boom in the 2000s directly linked to this film.

The Tomb Raider shoot at Ta Prohm in 2000 CHANGED Cambodia's tourism destiny: before the film, Angkor received ~150,000 visitors per year. After the film (2001-2002), the figure rose to over 500,000, then to over 2 million at the 2019 peak. Angelina Jolie fell in love with the country to the point of adopting her son Maddox there in 2002, and becoming honorary Cambodian citizen. The government has since invested heavily in conservation: some king-trees of Ta Prohm are propped up to prevent them from collapsing and further damaging the stones.

Wikipedia ↗

Tonlé Sap lake and floating villages

TONLÉ SAP lake is the LARGEST FRESHWATER LAKE in Southeast Asia, and one of the most unique hydrological phenomena on the planet: it REVERSES its flow direction twice a year. In dry season (November-May) the lake empties into the Mekong via the Tonlé Sap river, surface ~2,700 km². In rainy season (June-October), the swollen Mekong PUSHES water back into the lake, which multiplies its surface by 5-6 up to ~16,000 km² (a quarter of Cambodia). Floating villages (Kampong Phluk, Mechrey, Chong Khneas) rise and fall with the waters. UNESCO biosphere reserve 1997. Fishing essential for Cambodia (60 % of the country's animal proteins).

Tonlé Sap has been LISTED on UNESCO's biosphere reserves list since 1997 — one of the most productive lake ecosystems in the world in fish biomass. The flow reversal phenomenon (almost unique on Earth) creates each year a temporary flooded zone that serves as a giant SPAWNING GROUND for the Mekong giant catfish (up to 3 m and 300 kg). The floating villages of Kampong Phluk, accessible by boat from Siem Reap, retain a traditional way of life: schools, temples, basketball courts and even pigs and chickens live ON THE WATER for 6 months a year.

Wikipedia ↗

Phnom Penh (Royal Palace, S-21, Killing Fields)

Capital of Cambodia since 1866, ~2 million inhabitants at the confluence of the Mekong, Tonlé Sap and Bassac rivers. ROYAL PALACE (1866 under Norodom I, official residence of King Norodom Sihamoni) with the Silver Pagoda (5,000 silver tiles on the floor). NATIONAL MUSEUM and its Khmer art collection. TUOL SLENG S-21 GENOCIDE MUSEUM (former secondary school turned into torture prison by the Khmer Rouge 1975-1979, ~17,000 prisoners of whom 7 survivors — overwhelming but essential memorial site to understand). CHOEUNG EK KILLING FIELDS (15 km away, one of the 300 mass graves of the genocide, very well-done audio guide). Visiting these two sites in one day is exhausting but profoundly necessary.

The Khmer Rouge genocide led by Pol Pot between April 1975 and January 1979 caused between 1.7 and 2.2 MILLION deaths, or about ¼ of the Cambodian population of the time — proportionally one of the deadliest genocides of the 20th century. The visit of the S-21 museum (Tuol Sleng, systematic photographs of each prisoner — bureaucratic method inspired by the Nazis) then of the Killing Fields of Choeung Ek (audio guide narrated by survivors, tree where the executioners smashed children) remains one of the most heart-breaking experiences of travel in Asia. The international trials of the last Khmer Rouge (ECCC tribunal supported by the UN) took place from 2007 to 2022.

Wikipedia ↗

Siem Reap (base town for Angkor)

Small town (~250,000 inhabitants) 6 km south of Angkor, logistical base for any circuit. PUB STREET and its tourist ecosystem (restaurants, happy hour bars, Khmer massages, night markets Angkor Night Market and Made in Cambodia). OLD MARKET (Psar Chas) for souvenirs, crafts, krama (Cambodian scarf). ARTISANS ANGKOR workshop (stone-sculpture and traditional silk school revitalising arts). Cooking class in the evening. PHARE circus (acrobatics by trained disadvantaged youth). New SIEM REAP-ANGKOR INTERNATIONAL AIRPORT (SAI) opened October 2023, 40 km from the city (old REP airport closed to protect Angkor). Count taxi ~$25 USD or transfer.

The historic Siem Reap airport (REP) was located only 6 km from Angkor Wat, and vibrations from take-offs-landings were suspected of worsening temple erosion. In October 2023, the brand new SIEM REAP-ANGKOR INTERNATIONAL AIRPORT (SAI) opened 40 km north-east, financed by Chinese investment (~$880 million USD), and the old airport was DEFINITIVELY CLOSED to preserve the UNESCO site. One of the first global cases of complete relocation of an international airport for heritage reasons.

Wikipedia ↗

› OFF-THE-BEATEN-PATH

Unique experiences to live

Watch the sunrise at Angkor Wat (gates open at 5am) — golden silhouette of the 5 towers reflected in the north basin, mythical scene to experience once in a lifetime.
Fly over the Angkor park in a tethered hot-air balloon (200 m altitude, single operator near the main entrance) — 360° aerial view of the temples emerging from the jungle.
Take a Khmer cooking class in Siem Reap (learn fish amok in banana leaf, lok lak, green mango salad) — $25-40 USD for 4 h.
Visit a Tonlé Sap floating village by boat from Siem Reap (prefer Kampong Phluk or Mechrey over tourist-saturated Chong Khneas) — stilted school, floating pagoda, mangrove.
Escape to the coast in Sihanoukville or island-hop to Koh Rong and Koh Rong Sanloem (turquoise water, white sand, atmosphere still preserved compared to Thailand) — 2-3 days relaxation.

› GASTRONOMY

Traditional dishes to try

Fish amok (Amok trei)

Cambodia's de facto NATIONAL dish: minced freshwater fish (usually Mekong perch or snakehead) gently cooked in a mild curry paste based on kroeung (lemongrass-galangal-turmeric-kaffir aromatic blend), thickened with coconut milk and egg, presented in a rolled banana leaf then steamed. Mousse-flan texture, extraordinary aroma. Served with white rice. Try in a good Siem Reap restaurant (Cuisine Wat Damnak, Marum) or learn in a cooking class.

Wikipedia ↗

Lok lak (lok lak sautéed beef)

Marinated beef strips quickly stir-fried in a wok in a garlic-pepper-soy-lemon sauce, served on rice with fried egg on top, tomato and cucumber slices, raw red onion, accompanied by LOK LAK SAUCE (ground Kampot pepper + lime juice + salt). Indirect FRENCH influence (Khmer-rethought steak-frites). Comfort food dish very popular across the country.

Wikipedia ↗

Nom banh chok (morning Khmer noodles)

« The Khmer noodles » par excellence — fresh rice vermicelli (made on traditional press), drizzled with a green curry-soup based on fermented crushed fish (prahok), coconut milk, lemongrass, turmeric, kroeung, served with a mountain of raw vegetables (bean sprouts, banana flower, cucumber, Thai basil, mint, lime). Traditional BREAKFAST dish, sold on the street early in the morning for 2,000-4,000 KHR (~$1 USD).

Wikipedia ↗

Bai sach chrouk (grilled pork on broken rice)

Emblematic Cambodian breakfast: thin slices of PORK marinated (garlic, coconut milk, sugar, soy) and charcoal-grilled, placed on a bed of BROKEN RICE (rice « broken » during polishing, cheaper but appreciated texture), accompanied by Khmer pickles (carrot-white daikon radish), clear leek-coriander broth, optional fried egg. ~$1.5 USD on the street. Absolute morning happiness.

Wikipedia ↗

Khmer red curry (Samlor kari)

Khmer red curry, based on coconut milk, red kroeung (with chilli), lemongrass, galangal and kaffir — LESS SPICY than Thai red curry, milder and sweeter. Usually prepared with chicken, sweet potato, green beans, Thai eggplant. Often served AT CELEBRATIONS (weddings, Khmer New Year) with French baguette (colonial heritage) or rice noodles, more rarely with white rice.

Wikipedia ↗

Kuy teav (noodle soup)

Rice noodle soup in a CLEAR BROTH of pork and dried seafood, garnished optionally with minced pork, fish balls, prawns, pork livers, herbs (coriander, spring onion), lime and chillies on the side. Sino-Vietnamese inspiration (cousin of Vietnamese phở and Chinese kway teow), served as BREAKFAST or quick snack. ~$2-3 USD everywhere on the street.

Wikipedia ↗

Skuon insects and tarantulas (adventurous street food)

The small town of SKUON (halfway between Phnom Penh and Siem Reap, nicknamed « Spiderville ») is famous for its garlic-fried tarantulas — food custom born during the Khmer Rouge famines now a tourist specialty. Crunchy taste, slightly nutty outside, creamy inside. Also crickets, grasshoppers, beetles and scorpions sold as street food in big city markets. For adventurous travellers only (origin and hygiene to verify).

Wikipedia ↗

› INSTALLATION

How to install your eSIM

On iPhone

1.Settings → Cellular → Add eSIM
2.Scan Alosea QR
3.Label (« Cambodia »)
4.On arrival at PNH or REP, switch data to Cambodia line and enable roaming

On Android

1.Settings → Connections → SIM Manager → Add Mobile Plan
2.Scan Alosea QR
3.Confirm and switch to Cambodia line
4.Enable data roaming

Troubleshooting

No signal on landing in Phnom Penh or Siem Reap? Check that roaming is ENABLED and network selection is automatic. A restart fixes 90 % of cases. At the Angkor temples: 4G works everywhere but can be slowed during tourist peak hours. Otherwise, Alosea support (7 languages).

› OUR TIPS

Tips for Cambodia

Cambodia is OUTSIDE the EU — CHECK your home plan: without inclusion, non-EU roaming fees = expensive

Activate eSIM BEFORE boarding for PassApp + Maps + WhatsApp from PNH or REP

Visa REQUIRED: e-Visa $36 USD on evisa.gov.kh (official, beware fake sites) or VOA $30 USD cash + 1 photo

Dual currency: USD accepted everywhere (preferred for amounts > $5 USD), riels (KHR) given as small change (~4,100 KHR per USD)

Time difference: GMT+7 year-round (no DST)

UNIVERSAL adapter recommended (mix of A/C/G plugs depending on hotels), 230 V/50 Hz

Angkor pass: $37 USD 1 day / $62 USD 3 days / $72 USD 7 days — buy at the official ticket office (Angkor Enterprise), photo taken on-site

Sunrise Angkor Wat: arrive by 5am with headlamp, expect 1h wait before actual sunrise

Dry season (November-February) = best period. March-April scorching. May-October = short afternoon rains

Recommended vaccines: hepatitis A/B, typhoid, Japanese encephalitis (prolonged rural areas) + travel insurance MANDATORY

🇰🇭

Your eSIM Cambodia

Active in 2 min · no contract · 200+ countries

See Cambodia plans →

› FREQUENTLY ASKED QUESTIONS

Cambodia FAQ

Is Cambodia in the EU?+

NO. SE Asian kingdom, outside EU for roaming.

Do I need a visa?+

YES. e-Visa $36 USD on evisa.gov.kh (official) or Visa on arrival $30 USD cash + 1 photo. Valid 30 days.

Does eSIM work at the Angkor temples?+

Yes, 4G covers the entire Angkor archaeological park. Practical for Maps to locate you in the maze of ruins.

Which carrier does Alosea use?+

Smart Axiata (leader ~50 %), Cellcard or Metfone — automatic selection based on your location.

How much data for 1 week Angkor + Phnom Penh?+

7-10 GB are enough for Maps, PassApp, WhatsApp, photos and a bit of streaming.

Time difference?+

GMT+7 year-round (no DST).

Which plugs?+

Mix of A (USA), C (Europe) and G (UK) depending on hotels. Universal adapter recommended.

Is my iPhone eSIM-compatible?+

iPhone XR (2018)+. Android: Pixel 3+, Samsung S20+, Xiaomi 13+.

› IN SHORT

Wrapping up

Cambodia OUTSIDE EU — without eSIM, home-plan roaming expensive
Visa REQUIRED: e-Visa $36 (evisa.gov.kh official) or VOA $30 cash + 1 photo
An Alosea eSIM activates in 2 min, 4G Smart/Cellcard/Metfone covers Angkor

Get your Cambodia eSIM now — ready in 2 minutes

› SOURCES

Sources & references

› ALSO READ

Other guides

Travel stress-free

Discover all our destinations.

All destinations →