SimSwift eSIM Data Plans for Japan

SimSwift does not provide any unlimited data eSIM plan for Japan. All of its offers for Japan have a fixed data cap, such as the 50GB 30‑day and 20GB 30‑day plans. Travelers who need a large amount of data can choose one of these fixed data plans—for example, the 50GB 30‑day plan priced at $26.99 USD or the 50GB 180‑day plan at $43.99 USD—though a fixed amount plan may be more cost‑effective for most users unless they require very high data usage.

SimSwift does not offer any Japan eSIM plan that includes a phone number or SMS service. Travelers who need a local phone number or the ability to send or receive text messages will need to use a data‑only plan. Over the included data connection, common VoIP applications such as WhatsApp, Telegram and iMessage can typically be used for voice calls and messaging, but some destinations may block or restrict access to these services, so travelers should confirm that the apps they rely on are available in Japan before purchasing a SimSwift eSIM.

SimSwift provides 48 single‑country plans that cover Japan and 96 multi‑country plans that include Japan. Prices span from about $1.99 to $419.70, and data caps range from 1 GB to 50 GB. The catalog offers both fixed‑data‑cap options and daily‑data‑cap plans, allowing travelers to choose between a pre‑determined amount of data and a per‑day usage allowance.