PRIeSIM eSIM Data Plans for Japan

PRIeSIM does not provide a truly unlimited data eSIM for Japan. The plans that carry the name “Japan Unlimited” grant a maximum of 3 GB per day at full speed; once the daily limit is reached the speed is reduced, and the allowance resets each day.

For travelers who need a larger, fixed amount of data, PRIeSIM offers several fixed‑data plans. Examples include a 100 GB plan valid for 180 days or a 50 GB plan valid for 90 days, which provide high‑speed data until the specified cap is reached. These options can be more cost‑effective for users who consume a lot of data.

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.

For Japan, PRIeSIM provides 13 single‑country plans and 35 multi‑country plans. The plans are priced between about $2.30 and $237.66 and offer data caps from 200 MB up to 100 GB. Some options set a daily data cap, while others give a fixed data amount for the full validity period, and many of the plans allow tethering.