ZenSim eSIM Data Plans for Japan

ZenSim does not offer a truly unlimited high‑speed data eSIM for Japan.
The plans labeled “Japan Unlimited STANDARD” actually provide 2 GB of data each day, after which the remaining data may be limited or throttled, although the specific post‑limit speed is not listed in the supplied information.

If a higher data allowance is needed, ZenSim’s fixed‑data plans are available. For example, a 20 GB plan is offered for 10 days or 30 days, and a 10 GB plan is available for 10 days or 30 days. Choosing a large fixed data plan can be more cost‑effective if you expect to use a lot of data while traveling in Japan.

ZenSim does not offer any eSIM plan that includes a phone number or SMS capability for Japan. Only data‑only eSIMs are available from the provider.

Users who need voice or text communication can still use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. These apps allow calls and messaging without requiring a local phone number or SMS service.

ZenSim has eight single‑country data plans available for Japan, with no multi‑country options. The plans cover a price range from USD 13.00 to USD 70.00 and offer data caps between 2 GB and 20 GB over validity periods of 10 to 30 days. Within those offerings, six plans provide fixed data amounts while two are daily data cap plans, allowing users to choose the activation method that best fits their travel needs.