eSimfly eSIM Data Plans for Japan

eSimfly does not provide a truly unlimited high‑speed data eSIM for Japan. The plans that use “Unlimited” in their name, such as Japan Unlimited 3 Days or Japan Unlimited 7 Days, are limited to 1GB per day; after that limit the speed is reduced, so they do not offer unlimited data.

Instead, eSimfly sells fixed‑data plans that may suit travelers who need more data. For example, the Asia 100GB 180Days plan gives 100GB of high‑speed data for 180 days, and the Japan 50GB 30Days (IIJ) plan gives 50GB for 30 days. These fixed‑data options can be more cost‑effective for most users unless very heavy data usage is required.

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 offers 24 single‑country data plans that cover Japan alone and 64 multi‑country plans that include Japan as part of a broader regional coverage. The provider’s plans are available in both fixed data packages and daily‑cap options. Prices for the Japan‑specific plans span from roughly $1.08 to $224.40, with data limits ranging between 1 GB and 100 GB and validity periods from 1 day to 365 days.