ViaConecta eSIM Data Plans for Japan

ViaConecta does not provide a truly unlimited high‑speed data eSIM plan for Japan. The plans marketed as “Japan Unlimited” actually offer 1 GB of high‑speed data each day, after which the speed is reduced (the specific throttled speed is not listed).

If unlimited data is not essential, ViaConecta offers several fixed‑data alternatives for Japan. For example, the “Japan 30 GB 30 days” plan provides 30 GB of high‑speed data for a month, and the “Japan 20 GB 30 days” plan offers 20 GB for the same duration. These options can be more cost‑effective for travelers who expect to use a moderate amount of data.

ViaConecta does not provide a Japan eSIM that includes a phone number or SMS capability.
Instead, the provider offers only data‑only eSIMs for travel in Japan. Travelers can use those data connections to access VoIP services such as WhatsApp, Telegram, or iMessage for voice calls and messaging.

ViaConecta offers 10 single‑country plans for Japan and 10 multi‑country plans that include Japanese coverage. The single‑country options range from $4.48 to $172.37 and provide data caps between 1 GB and 80 GB, while the multi‑country packages cover a similar price and data spectrum, allowing travelers to use the same plan across several countries, including Japan. Among the available plans, some feature a daily data cap structure (3 plans) and others provide a fixed data amount (17 plans). Many of the plans also permit tethering, giving users flexibility to share the connection with other devices.