Lumbus eSIM Data Plans for Japan

Lumbus does not provide a truly unlimited data eSIM for Japan. The plans titled “Japan Unlimited” supply only 3 GB of high‑speed data each day and reduce speed to 1000 kbps once the daily allowance is reached. Because the data is capped, these plans are not unlimited; after the 3‑GB limit is used the connection speed is throttled.

Travelers who need more data can choose from Lumbus’s fixed data plans instead. For example, the Japan 50GB 30‑day plan gives 50 GB of high‑speed data for a month, and the Japan 20GB 30‑day plan offers 20 GB for the same period. These fixed‑data options provide larger data allowances without the throttling that accompanies the “Japan Unlimited” plans.

Lumbus does not provide a Japan eSIM that includes a phone number or SMS capability. The company offers only data‑only eSIM plans for Japan. Travelers can use VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection, but should verify that these services are accessible in Japan before purchasing, as some destinations may block or restrict specific apps.

Lumbus offers 12 single‑country plans and 43 multi‑country plans that include Japan. The plans span a price range from roughly $4 to just under $141 and a data cap range from 1 GB up to 50 GB. Some of the options are fixed data‑amount plans, while a smaller selection—four plans—imposes a daily data cap, providing a different consumption model.