Firsty eSIM Data Plans for Japan

Yes, Firsty provides an unlimited data eSIM that covers Japan, called Firsty Free. The plan is priced at $0.00 USD, is valid for 1 day, includes advertising, and offers speeds that may be throttled to a maximum of 256kbps. Because the plan is unlimited, a fair‑usage policy may apply, meaning that if data usage is heavy the speeds could be reduced after a certain threshold. Travelers who are concerned about potential speed restrictions are encouraged to contact Firsty to confirm whether a fair‑usage policy is enforced and what the typical amount of data available at normal speed is.

Firsty does not provide any eSIM plans for Japan that include a phone number or SMS capability. All of Firsty’s Japan eSIM offerings are data‑only, so travelers cannot receive calls or text messages directly to the eSIM. However, they can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection to communicate with friends and family.

Firsty offers a total of 17 Japan‑focused plans, split into 16 single‑country options and 1 multi‑country package that includes Japan. The single‑country plans cover a price range from about $0 up to $91, with data caps that run from 1.5 GB to unlimited, and validity periods ranging from one to thirty days. The multi‑country plan falls within the same pricing spectrum but offers a lower data cap, typically on the lower end of the cap range.

The catalog includes both fixed data cap plans (three of them) where you receive a set amount of data for the full validity, and daily data cap plans (fourteen of them) that roll over each day, providing daily limits that reset. These two types simultaneously coexist in the Japan lineup, allowing travellers to choose between a steady total data allotment and a predictable daily usage limit.