AdventureSIMs eSIM Data Plans for Japan

AdventureSIMs does not currently provide an unlimited data eSIM plan for Japan. The available options include fixed‑data packages such as a 50GB plan valid for 180 days and a 20GB plan valid for 30 days. These larger data allowances are examples of the high‑volume choices available in the catalog; AdventureSIMs offers many other fixed data plans across different capacities and validity periods. Choosing a fixed‑data plan can be more cost‑effective for most travelers, unless you anticipate very heavy data usage that would exceed the largest plan’s allowance.

AdventureSIMs does not provide any Japan eSIM that includes a phone number or SMS capability. The service only offers data‑only plans for travelers in Japan. Users who need to communicate over voice or text can use VoIP applications such as WhatsApp, Telegram, or iMessage, which operate over the data connection provided by the eSIM.

AdventureSIMs offers 8 single‑country data plans for Japan, with no multi‑country options available. The plans range in price from $3.25 to $39.10 and provide data caps between 2 GB and 50 GB, over validity periods spanning 1 to 180 days. All of the plans are fixed‑amount data plans, meaning each plan delivers a specific data allocation that can be used at any time during its validity.