MoodSIM eSIM Data Plans for Japan

MoodSIM does not provide a truly unlimited data eSIM for Japan. All plans that carry the word “Unlimited” in their name actually offer a capped amount of high‑speed data, such as 500MB, 1GB, 2GB, 3GB, 5GB, or 10GB per day, after which the speed is throttled to a reduced level ranging from 128 kbps to 1 Mbps.

For travelers who need a larger, predictable amount of data, MoodSIM offers fixed‑data plans such as 20GB for 30 days, 50GB for 30 days, and 50GB for 180 days. These plans give a set data allowance without the speed reductions that occur on the “Unlimited” options, making them a more cost‑effective choice for heavy data users.

No, MoodSIM’s Japan eSIM plans do not provide a phone number or SMS capability. The provider only offers data‑only plans for Japan, so travelers can use the internet connection to run VoIP applications such as WhatsApp, Telegram or iMessage for voice calls and messaging, but they should confirm that those services are accessible in Japan beforehand.

MoodSIM provides 41 single‑country plans that cover Japan, and 58 multi‑country plans that include Japan. Most of the plans are fixed‑data amount plans, with data caps ranging from 500 MB up to 50 GB. Prices for these plans fall between roughly $2.49 and $121.99, giving customers a broad range of options for their stay.