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 16 single‑country data plans exclusively for Japan and 15 multi‑country data plans that include Japan in their coverage. The plans vary in price from $2.99 to $177.49 and provide data caps ranging from 500 MB to 135 GB. Among them, fixed‑data‑cap options let you choose a set amount of data for the plan’s validity, while daily‑data‑cap plans limit the amount you can use each day, which can be useful for short stays or bursty connectivity needs.