eSimfly eSIM Data Plans for Japan

eSimfly does not provide a truly unlimited data eSIM for Japan. The only products that include “Unlimited” in the name actually offer a daily cap of 3 GB; once that limit is reached the speed is reduced to 1000 kbps.

Travelers who need more data without speed throttling can choose one of eSimfly’s fixed‑data plans. For example, the Japan 50 GB plan that runs for 30 days costs $28.05, while the Global 100 GB plan that is valid for 31 days costs $68.07. These larger‑cap, high‑speed options can be more cost‑effective for heavy data users.

eSimfly does not provide a Japan eSIM plan that includes a phone number or SMS capability. Only data‑only plans are offered for Japan, so travelers will need to use the internet connection for voice and messaging through VoIP applications such as WhatsApp, Telegram, or iMessage. However, some destinations may block or restrict access to certain VoIP services, so users should check whether the apps they rely on work in Japan before purchasing a plan.

eSimfly lists ten single‑country data options for Japan and thirty‑seven multi‑country options that include Japan. The offered plans span a price range of roughly $2.16–$121.38 and a data cap range of 1 GB – 100 GB. For users who prefer a daily reset, there are six daily‑data‑cap plans; for those who want a cumulative allowance over the validity period, there are forty‑one fixed‑data‑cap plans, which provide a set amount of data that lasts from a few days up to a full year. The daily caps refresh each day, whereas the fixed caps do not reset during the validity window.