Japan

Looking for the best unlimited data eSIM for Japan in 2026? Then you probably already noticed that many eSIM providers advertise unlimited data, but in reality most of them come with a daily fair use policy, speed throttling or unclear terms and conditions.

After comparing the most popular Japan unlimited data eSIMs from Sim Local, Holafly, GigSky and other eSIM providers, Traveltomtom recommends the Sim Local AU eSIM for Japan because it offers truly unlimited high-speed data on the AU network, competitive prices and a much clearer deal than most other unlimited eSIMs for Japan.

Looking for the best eSIM for Japan in 2026? After testing eSIMs on my recent trip to Tokyo, Kyoto and Osaka, my top recommendation for most travelers is still Airalo.

The reason is simple: Airalo offers almost 20 different Japan eSIM plans, competitive prices, 5G access and operates on both the KDDI and SoftBank networks. That makes it one of the most reliable and flexible eSIMs for traveling in Japan.

However, if you are a heavy data user, content creator, remote worker or you simply do not want to worry about running out of data, then the Sim Local AU eSIM for Japan is the best unlimited data eSIM for Japan.