Saily eSIM Data Plans for Japan

Saily’s plans that include “UNLIMITED” in the name are not truly unlimited high‑speed data plans for Japan. Each of those plans provides a fixed amount of high‑speed data—5GB per day for the duration of the plan—and after that cap the connection is throttled to either 1 kbps or 1 000 kbps, depending on the specific package. Therefore, if a traveler needs continuous, unrestricted data, Saily’s UNLIMITED offerings do not meet that requirement.

For users who want a larger, but still limited, data allowance, Saily offers fixed‑data plans. For example, a 20 GB plan that is valid for 30 days is available for $24.99 USD, and a 25 GB plan that lasts 60 days is priced at $48.99 USD. These options provide more data before any speed reductions occur and can be more cost‑effective for heavy data users who do not need unlimited high‑speed access.

Saily does not provide eSIM plans in Japan that include a local phone number or SMS capability. The Japan eSIM offered by Saily is a data‑only plan; travelers can use internet‑based messaging and calling apps such as WhatsApp, Telegram or iMessage to communicate, but they will not receive a traditional phone number or SMS service.

Saily provides 12 single‑country plans that cover Japan and 22 multi‑country plans that include Japan in their coverage. The single‑country plans are a mix of daily data‑cap options and fixed‑data‑cap offerings. Across these plans, prices range from $3.99 to $159.99 and data caps vary between 1 GB and 30 GB.