Instabridge does not provide an unlimited‑data eSIM for Japan. All of the plans that list Japan in their coverage have a hard data cap, either 10 GB or 20 GB, and come with a fixed validity period.
Travelers looking for a high‑capacity option can choose from Instabridge’s fixed data plans, such as the 20 GB Japan eSIM Mobile Data Plan that is valid for 7 days at $24.00 USD, or the 10 GB Japan eSIM Mobile Data Plan that is valid for 30 days at $16.00 USD. These fixed bundles can offer a cost‑effective solution for most users unless extremely heavy data use is anticipated, in which case a different provider or a pay‑as‑you‑go model may be preferable.