Compare eSIMs for East Asia 2026

Japan, Hong Kong, South Korea and China carry most of the choice, making routes centred on those markets easier to serve than trips that hinge on Mongolia or Macau. East Asia spans China’s vast mainland as well as island markets such as Japan and Taiwan, and regional plans do not distribute their options evenly across that geography. For a quieter stop, the regional label alone is no guarantee of useful availability; its country-specific options can make or break the itinerary.