Lumbus eSIM Data Plans for Japan

Lumbus does not provide a truly unlimited data eSIM for Japan. The plans called Japan Unlimited offer a daily high‑speed allowance of 3GB/day and, once the daily limit is reached, the connection is throttled to 1000kbps. For users who need larger amounts of data without speed reductions, Lumbus offers fixed data plans such as the 50GB plan valid for 30 days or the 50GB plan valid for 180 days. These plans provide high‑speed data for the entire validity period and may be more cost‑effective for heavy‑data users.

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.