mobineX eSIM Data Plans for Japan

MobineX does not have a true unlimited data eSIM plan for Japan. Every plan that uses “Unlimited” in its name actually contains a data cap, ranging from 1GB to 169GB, and after the cap is reached the speed is throttled to a lower rate.

If a traveler needs a large allocation of high‑speed data, mobineX offers fixed data plans such as 100GB for 90 days, 100GB for 180 days, or 100GB for 365 days, all available on 5G (and some on 4G/LTE). These fixed‑data options can be more cost‑effective for users who consume a substantial amount of data during their stay.

MobineX does not provide eSIM plans with a phone number or SMS for Japan. The provider sells only data‑only eSIMs, so travelers cannot receive inbound calls or texts via the Japanese mobile network. However, the data connection can be used for VoIP applications such as WhatsApp, Telegram, and iMessage, which allow calls and messaging without a traditional phone number.

MobineX lists 44 single‑country data plans that cover Japan and 108 multi‑country plans that include Japan as part of their coverage. The single‑country plans vary from a few gigabytes up to 169 GB and can cost as little as $1.20, while the multi‑country offerings span a similar data range and price range of $1.20 to $480.00, allowing travelers to choose a plan that fits their data usage and budget. The single‑country and multi‑country options differ mainly in coverage scope: single‑country plans are restricted to Japan alone, whereas multi‑country plans provide data for Japan plus other destinations within the same subscription.