Does it work at Angkor Wat?

Yes — the whole Angkor park is covered, including Bayon and Ta Prohm, so you can call a tuk-tuk between temples.

Will it work on Koh Rong?

Partly. The main beaches have some service; the boat crossing and the quieter side of the island often have none.

Does it cover Mondulkiri and Ratanakiri?

The provincial towns have signal; the jungle, the sanctuaries and the waterfall routes largely do not.

Do I keep my home number?

Yes. The eSIM handles data only, so calls and texts continue on your existing SIM.

Cambodia eSIM — Travel Data from $3.49

Roameo's Cambodia eSIM roams onto the national 4G/5G networks. Coverage is reliable in Phnom Penh, Siem Reap, Battambang, Sihanoukville and Kampot, and the whole Angkor Archaeological Park has service — genuinely useful for calling a tuk-tuk between temples that sit kilometres apart. It thins fast outside that: the Cardamom Mountains, Mondulkiri and Ratanakiri, and the boat routes out to Koh Rong and Koh Rong Samloem run from patchy to nothing, and the Tonlé Sap floating villages are hit and miss. Cambodia uses US dollars alongside the riel for most transactions and ATMs mostly dispense dollars, which is worth knowing before you land. Data-only, tethering supported, home SIM keeps your number.

eSIM for Cambodia

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Cambodia 3GB 15Days

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Cambodia 500MB 7Days

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Cambodia 3GB 30Days

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Also check

Travelling to Cambodia

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