In Sri Lanka: a local physical SIM is the better choice — passport/ID registration is required to buy a local SIM.
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A local physical SIM is the better choice for Sri Lanka. Sri Lanka requires passport registration for SIM purchase, which is quick and done right at the airport; eSIM coverage is improving but still less universal than a physical SIM.
Yes — Sri Lanka requires passport or ID registration to activate a local physical SIM.
Buy your physical SIM at the airport arrivals hall in Sri Lanka — most major carriers have a kiosk right past immigration, and staff can handle the registration paperwork for you.
Only if you're fine paying your home carrier's international roaming rates — check your plan first, since those can add up fast compared to a local SIM or eSIM.
Airport SIM booths and roaming plans are the expensive way to get online. A Saily eSIM (by the team behind NordVPN) installs on your phone before you fly, activates automatically when you land in Sri Lanka, and gives you prepaid data at local prices in 190+ countries — no physical SIM, no contract, no surprise bill.
See Saily data plans for Sri Lanka →Disclosure: if you buy through this link, TravelSmarter may earn a commission at no extra cost to you. It keeps our tools free.