Kolet eSIM Data Plans for Japan

Kolet does not offer a truly unlimited data eSIM for Japan. The plans titled “Japan UNLIMITED” provide up to 5GB of high‑speed data each day; after that daily limit the speed is throttled to 1024 kbps. Travelers needing higher data volumes can choose Kolet’s fixed data plans, such as 20 GB for 30 days or 10 GB for 30 days, which keep full 5G speed for the entire validity period and can be more economical for heavier data usage.

Kolet does not provide an eSIM plan for Japan that includes a phone number or SMS capability. Their Japan offerings are data‑only, so no voice or text services are available through a local number. Travelers wishing to make voice calls or send messages can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations may restrict access to specific apps or services, so it is advisable to verify that the apps you need are available in Japan before purchasing.

Kolet offers 13 single‑country plans and 10 multi‑country plans that include Japan. The provider provides both fixed‑data‑cap plans, which give a set amount of data for the entire validity period, and daily‑data‑cap plans, which allow a certain amount of data each day. Prices generally range from roughly $4 to $122, while data caps are between 1 GB and 20 GB across the various options.