Wiiline eSIM Data Plans for Japan

Wiiline does not provide a truly unlimited data eSIM for Japan. Plans that carry the word “Unlimited” give a 5GB/day allowance on 4G; after the 5 GB daily limit is reached, the speed reduces to 256 kbps. Travelers who need unrestricted high‑speed data may prefer one of Wiiline’s fixed‑data options, such as the 80 GB plan valid for 365 days, the 50 GB plan for 30 days, or the 30 GB plan for 30 days. These plans offer larger total data allowances without the daily cap and can be more cost‑effective for heavy‑data users.

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’s catalog for Japan contains 28 distinct data plans, divided equally between 14 single‑country offerings and 14 multi‑country options. The single‑country plans provide data exclusively for Japan, while the multi‑country plans bundle Japan coverage with additional destinations, enabling travelers to switch networks across regions without needing a new eSIM.

Across both categories, prices run from roughly $1.83 for the smallest bundles up to $150 for the most generous packages, and data caps span from 490 MB to 80 GB depending on the chosen plan. The fixed‑data‑cap packages dominate the selection, offering clear, predetermined data limits, whereas a smaller subset of plans feature daily data caps to suit short‑term roaming needs.