esimzon eSIM Data Plans for Japan

esimzon does sell unlimited data eSIM plans for Japan. The provider offers four unlimited options with validity periods of 4 days, 7 days, 10 days and 15 days, priced from $9.90 USD to $25.00 USD. Each plan supports 5G connectivity and allows tethering, but the description notes that speeds may be throttled after heavy usage.

Because of the Fair Usage Policy, normal speed may be reduced after a certain amount of data is consumed. If you need to know the specific data limit that allows uninterrupted 5G speed, contact esimzon directly to confirm the terms and typical thresholds for speed restrictions.

esimzon does not provide a Japan eSIM plan that includes a phone number or SMS capability. The company offers only data‑only eSIMs for travelers visiting Japan, so there is no telephone dialing code, inbound or outbound voice service, or SMS service available from esimzon. Travelers who need to make calls or send messages can use data‑based applications such as WhatsApp, Telegram or iMessage, which work over the data connection without requiring a local phone number or SMS functionality.

esimzon offers nine single‑country data plans for Japan and one multi‑country plan that also includes Japan in its coverage. The available plans range in price from roughly four to twenty‑eight US dollars and provide data caps from three gigabytes up to unlimited. Validity periods vary between four and thirty days. Single‑country plans are dedicated to use exclusively in Japan, while the multi‑country plan allows the same data to be used across several destinations, giving travelers more flexibility. Some plans permit tethering, but speed may be throttled after a certain threshold.