MoodSIM eSIM Data Plans for Japan

MoodSIM does not provide a truly unlimited data eSIM for Japan. The plans that carry the word “Unlimited” in their name limit high‑speed data to a set amount each day—for example, the Japan Unlimited (1 GB/day) plan gives 1 GB of 5G data before reducing the speed to 384 kbps.

For travelers who need a large, unrestricted data allowance, MoodSIM offers fixed‑data plans. One example is the Japan 50 GB 30 days plan, which delivers 50 GB of 5G data for 30 days. A smaller option is the Japan 20 GB 30 days plan, providing 20 GB of 5G data for the same period. These fixed‑data packages do not throttle speed after a daily limit is reached, and may be more cost effective for heavy data users.

MoodSIM does not provide any Japan eSIM plan that includes a local phone number or SMS capability. All available plans from this provider are data‑only. Travelers can use popular VoIP applications such as WhatsApp, Telegram, and iMessage over the data connection for voice calls and messaging.

MoodSIM provides a total of 41 single‑country data plans that cover Japan, and an additional 58 multi‑country plans that include Japan as part of their coverage area. The single‑country plans range in price from approximately $2.49 to $121.99 and offer data caps between 500 MB and 50 GB. The multi‑country plans feature a similar price range and data cap range, with durations varying from 1 to 365 days. Some plans allow tethering, while others reduce speed to specified lower limits. Both categories give travelers flexibility depending on the amount of data needed and the length of stay.