Giga.Tel eSIM Data Plans for Japan

Giga.Tel does not offer a plan that provides truly unlimited high‑speed data for Japan. All of its plans that carry the word “Unlimited” give a daily allowance of 1 GB; once the daily quota is used, the speed is throttled to 512 kbps. For travelers who need more data, Giga.Tel offers several fixed‑data alternatives in Japan, such as 50 GB for 30 days, 60 GB for 365 days, and 90 GB for 365 days. These fixed‑data plans can be more cost‑effective, especially for customers who consume more data than the 1 GB/day limit allows.

Giga.Tel does not provide eSIM plans for Japan that include a phone number or SMS capabilities. The available plans are strictly data‑only, meaning users can access the internet but cannot receive inbound calls or SMS messages on a local Japanese number. Travelers can still use data‑based VoIP applications such as WhatsApp, Telegram, and iMessage for voice calls and messaging without relying on a local phone number or SMS service, but no native telephony or SMS feature is offered by Giga.Tel for Japan.

Giga.Tel lists 24 single‑country data plans that cover only Japan and 24 multi‑country plans that include Japan as one of several destinations. Across those plans the price ranges from about $4.99 up to $307.99, while the data caps span from 500 MB to 90 GB. The catalog also distinguishes between plans with a fixed data allowance (36 in total) and those that offer a daily data cap (12), providing travelers with both short‑term and long‑term usage options.