Sim Local eSIM Data Plans for Japan

Sim Local does not provide a truly unlimited data eSIM for Japan. All of the plans that carry the “Unlimited” name, such as Japan Unlimited – 4 day, 7 day, 10 day, 15 day and 30 day, actually offer a data cap of 10 GB per day. Once this limit is reached, the speed is reduced, so the plan is not genuinely unlimited.

Instead, Sim Local offers a range of fixed‑data plans that can be more cost‑effective for typical travelers. For example, the Japan 20 GB plan is valid for 30 days and costs $24.50 USD, while the Japan 20 GB (Asia) option is valid for 31 days and costs $35.00 USD. These plans provide a set amount of high‑speed data without throttling, making them a practical alternative if you need a larger data allowance for your trip to Japan.

Sim Local does not provide a Japan eSIM that includes a local phone number or SMS capability. Only data‑only plans are available for travelers to Japan. Users can still make and receive calls, as well as send and receive messages, by using popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but they should verify that the specific apps they rely on work in Japan before purchasing.

Sim Local provides a choice of 10 single‑country data plans that cover Japan alone, and an additional 9 multi‑country plans that include Japan as one of several destinations. The plans cover a price range from about $4 to $93.50 and a data cap range from 1 GB up to 100 GB, with validity periods spanning 3 to 31 days. The catalog also distinguishes between daily data cap plans, where the data allowance resets each day, and fixed data cap plans, where a specified amount of data is available for the entire validity period.