Getting a SIM card on arrival in Sri Lanka

Yes, visitors can buy a physical prepaid tourist SIM even if they already have an eSIM — the most convenient place is the arrivals area at Bandaranaike International Airport (CMB), where Dialog and SLT-Mobitel run visitor-facing counters; city stores and authorised dealers are the alternative. Dialog is usually the simplest default for broad island coverage and easy airport availability; SLT-Mobitel is a solid alternative with its own airport outlet; Hutch and Airtel may also be available and cheaper, but worth comparing coverage for a specific itinerary before relying on them outside the main cities. A physical local SIM is particularly useful if the eSIM is data-only — the local number helps with hotels, drivers, local calls, OTPs and WhatsApp registration — and on a dual-SIM phone, the eSIM can stay active for data while the Sri Lankan SIM handles the local number.

Yes. The Telecommunications Regulatory Commission of Sri Lanka (TRCSL) mandates SIM registration under its Subscriber SIM Card Registration Regulations. For a foreign tourist, a valid original passport is required, used to register the connection under the passport number — no other documents are usually needed beyond that (occasionally a local address may be requested), and this applies whether registering at an airport counter (Dialog, SLT-Mobitel at Bandaranaike International Airport), an official store, or an authorised retailer. The process is typically quick — often under 10 minutes at airport kiosks — and the registration itself is free. This requirement is specific to physical SIMs from local operators (Dialog, Mobitel, Hutch, Airtel); an international travel eSIM from a non-local provider doesn't go through the same local registration process. Unregistered SIMs can't be properly activated or used long-term.

Yes. At Bandaranaike International Airport (CMB), SIM/telecom kiosks sit in the public arrivals lobby — reached after immigration, baggage collection and customs, before leaving the terminal. Dialog (red branding) is the principal counter to look for and reportedly operates around the clock; SLT-Mobitel, Airtel and Hutch also have counters in the same arrivals area. Bring a passport for the mandatory registration; for the simplest option, the Dialog counter can normally register and install a physical prepaid tourist SIM on the spot.

The arrivals SIM counters at Bandaranaike International Airport — particularly Dialog and SLT-Mobitel — are generally described as operating 24 hours a day, positioned after baggage claim and customs, which should cover late-night and red-eye arrivals. That said, treat this as operationally likely rather than a guaranteed published retail-hours commitment: if landing very late and needing service immediately, it's safer to keep an existing eSIM active until the physical SIM is registered, rather than assuming the counter will be staffed and ready the moment you arrive. The airport itself operates 24 hours, which supports the counters' round-the-clock framing.