The ETravelSim Sri Lanka eSIM works in Ella town, Nuwara Eliya town, and Haputale with reliable 4G coverage at most accommodations, restaurants, and town centers. Hiking trails like Little Adam's Peak, Ella Rock, and the Pekoe Trail tea routes have patchy coverage — signal works at trailheads but drops in deeper sections. Nuwara Eliya specifically is rated stronger on Dialog than Mobitel by some independent reviewers, so plan offline maps for tea-country exploration.
