eSimfly eSIM Data Plans for Japan

eSimfly does not offer a truly unlimited high‑speed data eSIM for Japan. The plans that are labeled “Unlimited” provide only 1GB per day, after which the data is reduced or throttled, so they are not unlimited in the sense of providing unlimited high‑speed traffic.

If you need more data, you can choose one of the fixed‑data plans. For example, Japan 50GB for 30 days is available for $33.15, or a larger option is Asia 100GB for 180 days at $257.40. These plans give you a larger data allowance without the daily cap and are suitable if you expect heavy usage during your stay in Japan.

eSimfly does not provide a Japan eSIM plan that includes a phone number or SMS capability. The provider only offers data‑only eSIMs for Japan, so travelers cannot receive inbound SMS or make outbound voice calls through a local phone number. For messaging and voice communication, users can rely on internet‑based apps such as WhatsApp, Telegram, or iMessage, which operate over the data connection.

eSimfly lists 20 single‑country plans and 73 multi‑country plans that cover Japan. The single‑country offers run from $1.37 to $257.40 USD, deliver between 1 GB and 100 GB of data, and are valid for 1 to 365 days. Multi‑country plans follow the same price and data ranges but bundle Japan with other destinations. Some plans provide a daily data cap while others supply a fixed data amount; tethering is permitted on selected plans.