Ohayu eSIM Data Plans for Japan

Yes, Ohayu does provide an unlimited data eSIM for Japan. The plan is called “Unlimited Monthly Trial.” It offers unlimited data with a validity of 30 days and is priced at $39.99 USD. The plan uses Ohayu’s 5G network and allows tethering, but it includes a maximum speed of 1000 kbps. Because it is an unlimited plan, speeds may be reduced after heavy usage; this is subject to Ohayu’s fair‑use policy. If a traveler wants more detail on speed restrictions or typical data available at full speed, they should contact Ohayu directly to confirm the current FUP and any applicable limits.

Ohayu does not provide eSIM plans that include a phone number or SMS capability in Japan. Their offerings are limited to data‑only plans. Travelers who want to make calls or send messages can use VoIP apps such as WhatsApp, Telegram, or iMessage over the data connection, but the availability of these services can be restricted in certain destinations, so it is advisable to verify that the apps you need work in Japan before purchasing an Ohayu plan.

Ohayu offers a total of seven data plans for use in Japan, comprising five single‑country plans and two multi‑country plans that include Japan in their coverage. The plans vary in price from $7.49 to $53.99, with data caps ranging from 3 GB up to unlimited, and validity periods between 15 and 30 days. Some plans provide a fixed data amount, while others offer unlimited data that may be subject to throttling or a speed limit of 1, 000 kbps, and tethering is allowed on many of the options.