eSIM Cards eSIM Data Plans for Japan

eSIM Cards does not provide a truly unlimited high‑speed data plan for Japan. The provider’s “Japan Unlimited eSIM” offers 1 000GB of high‑speed data, after which the speed may be throttled, so the plan has a large but finite cap. Travelers looking for a more predictable data budget can choose a fixed‑data alternative such as the 10GB Travel Plan for 30 days, which guarantees a set amount of high‑speed data without a throttle clause. These options may be more cost‑effective than a large capped plan for users who do not need the full 1 000GB.

eSIM Cards does not provide Japan eSIM plans that include a phone number or SMS capability. The only Japan eSIM offerings from this provider are data‑only plans. Travelers who need voice or messaging can still use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection.

eSIM Cards offers seven single‑country data plans for Japan, with no multi‑country options available. These plans span a price range from about $6.58 to $26.31 and provide data caps between 3 GB and 1 000 GB, depending on the plan selected. The validity periods vary from 4 to 30 days, giving travelers flexibility to choose short‑term or longer‑term coverage. Depending on the provider’s structure, some packages may offer fixed data amounts that are valid for the entire period, while others cap the transfer at a daily rate that may be applied across the plan’s duration. This range allows users to match their data needs—whether they require a small, occasional data burst or a larger, more extensive data allowance for extended stays.