Nimbus eSIM eSIM Data Plans for Japan

Nimbus eSIM does not have a plan that truly provides unlimited high‑speed data for Japan. All of its Japan‑only plans that use the word “Unlimited” actually allocate a fixed amount of high‑speed data, such as 15GB in a day‑long package or 3GB per day for longer Asian‑coverage packages, after which the speed is throttled to 1000kbps.

Trained users looking for higher capacity can choose from Nimbus eSIM’s fixed‑data plans. For example, a 60GB plan valid for 15 days costs $102.99 USD, and a 100GB plan valid for 30 days costs $170.49 USD. These fixed‑data options offer a larger data allowance without the reduced speed that occurs when the “Unlimited” label caps are reached.

Nimbus eSIM does not provide a phone number or SMS capability for Japan. Only data‑only eSIM plans are available from this provider. Travelers can still use VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection for voice and messaging needs.

Nimbus eSIM provides 39 single‑country plans that cover Japan, while an additional 21 multi‑country plans that include Japan are also available. Among the single‑country offerings, 12 plans are structured with a daily data cap, limiting usage each day but offering flexibility over the validity period, whereas 48 plans use a fixed data cap that provides a set amount of data for the entire validity window. Prices for all Nimbus plans in Japan range from about $2.49 up to $170.49, with data allowances spanning from 500 MB to 100 GB depending on the chosen plan.