PRIeSIM eSIM Data Plans for Japan

PRIeSIM does not provide a truly unlimited‑data eSIM for Japan. All of its plans that use the name “Unlimited” give a hard limit of 3 GB per day; after that limit the speed is reduced, as noted in the provider’s own description.

If you need more data than the daily mandate, PRIeSIM offers fixed data plans such as the 100 GB plan valid for 180 days or the 50 GB plan valid for 90 days. These options give a larger total allowance, but they are still capped by the stated data amount.

PRIeSIM does not provide a Japan eSIM that includes a phone number or SMS capability. The provider offers only data‑only plans for travelers visiting Japan.

Travelers who need voice or messaging can use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations may block or restrict certain apps or VoIP services, so it is advisable to confirm that the applications you rely on are accessible in Japan before purchasing a plan.

PRIeSIM provides a range of data plans that include Japan. The provider offers 13 single‑country plans and 46 multi‑country plans that cover Japan. The plans vary in price from about $2.31 to $238.82 and in data allowance from 200 MB to 100 GB. Some plans feature a daily data cap while others offer a fixed data amount.