Wiiline eSIM Data Plans for Japan

Wiiline does not provide a truly unlimited data eSIM for Japan. All of its plans for the country have a capped data allowance, typically released as 5 GB/day. When the daily limit is reached the speed is throttled to 256 kbps.

Travelers who need a larger data budget can choose from several fixed‑data options offered by Wiiline, such as a 50 GB plan valid for 15 or 30 days, a 30 GB plan for 30 days, or an 80 GB plan valid for 365 days that also covers 139 additional countries. These plans give a clear upper bound but avoid the post‑limit speed reduction.

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 provides a portfolio of 15 single‑country data plans that include Japan as one of the supported destinations. In addition, there are 13 multi‑country plans that cover Japan along with other nearby regions. The plans are available in two main variations: fixed data‑cap packages, which grant a set amount of data for the entire validity period, and daily‑data‑cap packages, which limit the amount of data that can be used each day. Across all Japan‑related offerings the price range spans from about $1.83 to $150.00, while the data caps vary from 490 MB up to 80 GB, giving customers a broad spectrum of options to suit different usage needs.