CloudOn eSIM eSIM Data Plans for Japan

CloudOn eSIM does not provide a truly unlimited data eSIM for Japan. The plans that carry the word “Unlimited” give a fixed amount of high‑speed data each day—such as 3 GB/day for the Japan Unlimited – 3 days plan—and after that daily limit the speed is throttled to 1 Mbps. The same pattern applies to the 5‑day, 7‑day, 10‑day, 15‑day, and 30‑day Japan Unlimited plans.

Travelers who need a larger, fixed data allowance can choose from CloudOn eSIM’s fixed data plans, such as 100 GB for 31 days, 50 GB for 31 days, 135 GB for 91 days, or 50 GB for 30 days. These plans provide a set amount of high‑speed data that must be used within the validity period and can be more cost‑effective for most users unless extremely heavy data consumption is expected.

CloudOn eSIM does not provide an eSIM for Japan that includes a phone number or SMS service. The provider only offers data‑only eSIM plans for the country. Travelers can still use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection; however, some destinations may block or restrict certain apps, so it is advisable to confirm that the services needed will work in Japan before ordering a plan.

CloudOn offers a total of 25 single‑country plans and 24 multi‑country plans that can include Japan, while the overall price spectrum for all plans ranges from US $3.99 to US $99.99 and data caps vary from 500 MB up to 135 GB. The daily data cap options provide a set amount of data per day, whereas the fixed data cap plans give a total allotment that lasts for the plan’s validity period.