Wiiline eSIM Data Plans for Japan

Wiiline does not provide a truly unlimited data eSIM for Japan. The plans that carry the word “Unlimited” in their names actually allow 5 GB of high‑speed data each day and reduce speed to 256 kbps once that limit is reached.

Travelers who need more data can choose from Wiiline’s fixed‑data plans. For example, a 50 GB plan is available for 15 days or 30 days, and a 80 GB plan is available for a full year with global coverage. These options give larger data allowances and can be more cost‑effective for users who consume a lot of data but do not need an unlimited data plan.

Wiiline does not provide a Japan eSIM that includes a phone number or SMS capability. All of its eSIM plans for Japan are data‑only, so travelers will not be able to send or receive text messages or make voice calls through a local mobile number.

Instead, users can rely on popular VoIP applications such as WhatsApp, Telegram, or iMessage, which work over the data connection and allow messaging and voice or video calls without needing a mobile phone number or SMS functionality.

Wiiline offers 14 single‑country plans and 12 multi‑country plans for use in Japan. Prices span roughly $4.75 to $149.01 while data limits range from 1 GB to 80 GB. The portfolio includes both fixed‑data plans, which provide a set amount for the full validity period, and daily‑cap plans that restrict usage on a per‑day basis.