CloudOn eSIM eSIM Data Plans for Japan

CloudOn eSIM does not provide a true unlimited‑data eSIM for Japan. The plans branded with “unlimited” actually deliver 2 GB per day at full speed and then throttle to 1000 kbps once the daily limit is reached. For travelers who need larger data allowances, CloudOn offers fixed‑data plans such as the 135 GB/91 days plan at $41.99 USD or the 100 GB/31 days plan at $29.99 USD. Fixed data plans can be a more cost‑effective option unless the user expects extremely heavy data usage.

CloudOn eSIM does not provide an eSIM plan for Japan that includes a phone number or SMS capability. All plans offered for Japan are data‑only.

Travelers who need voice or messaging can rely on VoIP applications such as WhatsApp, Telegram, or iMessage, which work over the data connection provided by the eSIM.

CloudOn eSIM offers a total of 29 data plans for Japan, comprising 14 single‑country plans that provide data exclusively for Japan and 15 multi‑country plans that include Japan along with other destinations. The plans span a price range from about $3.99 to $177.49 and a data cap range from 500 MB up to 135 GB. Within these, most plans feature fixed data amounts (22 plans) while a smaller subset (7 plans) operates on daily data caps, allowing a set amount of data each day for the validity period.