yaySIM eSIM Data Plans for Japan

Unlimited‑data eSIM plans are not offered by yaySIM for Japan. The plans available for Japan have fixed data caps that range from 20GB to 50GB. For example, the JP_50_30 and JP_50_180 plans provide 50GB for 30 days and 180 days, each priced at $45.40 USD, while the JP_20_30_nonhkip plan provides 20GB for 30 days at $34.02 USD. An additional option, the AS‑20_50_180 plan, offers 50GB for 180 days at $130.75 USD and extends coverage beyond Japan to 19 additional countries.

Choosing a fixed‑data plan can be more cost effective for travelers who need substantial data but do not consume high volumes continuously, whereas very heavy data users might consider higher‑allowance plans.

yaySIM does not provide a Japan eSIM that includes a phone number or SMS capability. The provider only offers data‑only plans for Japan. Travelers who need to make calls or send messages can use VoIP apps such as WhatsApp, Telegram, or iMessage over the data connection, but availability of these services can vary in Japan, so users should confirm that the apps they rely on work locally before purchase.

yaySIM gives travelers two types of data plans for Japan. They provide 31 single‑country plans that cover only Japan, and 58 multi‑country plans that include Japan as part of a broader network. The available plans range in price from about $2.16 to $131.88 and offer data from 102 MB up to 50 GB, covering validity periods from one day to a full year. These options allow customers to choose either a flat data bundle or a budget‑friendly daily data cap, depending on the specific plan selected.