eSimy eSIM Data Plans for Japan

eSimy does not provide an unlimited data plan for Japan. All of its Japan‑specific eSIM offerings have fixed data caps.
Among the available options, eSimy sells 100 GB for 365 days at $354.06 USD, 25 GB for 365 days at $88.52 USD, 20 GB for 30 days at $35.39 USD, and 10 GB for 30 days at $24.77 USD. These plans come with tethering allowed and cover all of Japan (the 100 GB and 25 GB plans also provide additional global coverage).
Choosing a fixed data plan can be more cost‑effective for most travelers unless an extremely heavy data consumer requires an unlimited option.

eSimy does not provide eSIM plans for Japan that include a local phone number or SMS capability. The provider only offers data‑only eSIMs in this country, so travelers must rely on internet connectivity to communicate. Popular VoIP applications such as WhatsApp, Telegram, and iMessage can be used over the data connection for voice and text communication.

eSimy offers five single‑country data plans that cover Japan and ten multi‑country plans that include Japan as part of a broader regional package. Single‑country plans are dedicated to one country only, while multi‑country plans allow data usage across several countries, often with a larger data cap or longer validity for travellers who need coverage in multiple destinations. The available plans range in price from about $4.12 to $354.06 and provide data caps between 1 GB and 100 GB, with validity periods that can span from 7 days up to a full year.