Yesim eSIM Data Plans for Japan

Yesim does offer unlimited data eSIM plans for Japan. The plans start with a 1‑day Unlimited option at $8.25 USD and continue to 30‑day (and longer) periods, the 30‑day plan costing $64.86 USD. All unlimited options use 5 G, allow tethering, and include a Note that speed may be throttled after high usage due to the Fair Usage Policy. Travelers who want to confirm how much data remains at normal speed or whether the Fair Usage Policy applies should contact Yesim directly.

Yesim does not offer a Japan eSIM plan that includes a phone number or SMS capability. Travelers can purchase data-only plans for use with VoIP applications such as WhatsApp, Telegram, or iMessage, which provide voice calling and messaging over the internet.

Yesim provides a total of 8 single‑country plans that can be used exclusively in Japan, as well as 25 multi‑country plans that include Japan among their destinations. The single‑country options typically range in price from about $8 to $233 and offer data caps from 5 GB up to unlimited, while the multi‑country plans span a similar price and data range. Plans may differ in that some offer a fixed data amount for the entire validity period, whereas others impose a daily data cap; in all cases tethering is allowed, though speeds may be throttled after the plan’s data limit is reached.