eSIM4Travel eSIM Data Plans for Japan

eSIM4Travel does not provide a truly unlimited data eSIM for Japan.
The plans labeled “Unlimited‑…‑Japan” actually give a fixed daily allowance of 3GB per day and, once that limit is reached, the speed is throttled to 1000 kbps. For travelers who want larger unthrottled data caps, eSIM4Travel offers fixed data plans such as 50GB for 30 days or 20GB for 30 days. These plans provide a set amount of high‑speed data that must be used within the 30‑day validity window, and they can be more cost‑effective for most users.

eSIM4Travel does not offer a Japan eSIM that includes a phone number or SMS capability. The provider sells only data‑only eSIM plans for Japan. Travelers who need voice or messaging can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but the availability of these apps can be subject to local restrictions, so it is advisable to confirm that the apps you rely on work in Japan before purchasing.

eSIM4Travel offers 15 single‑country data plans and 10 multi‑country data plans for Japan. Prices cover a range from US$0.69 to US$80.20, and data caps extend from 1 GB up to 50 GB, with some plans featuring fixed data allotments and others applying a daily data cap that resets each day.