ETravelSim eSIM Data Plans for Japan

ETravelSim does not provide a true unlimited data eSIM for Japan. The plans that include “Unlimited” in their name actually allow 4 GB per day; once this limit is reached, the speed is reduced to 128 kbps, so the data is not high‑speed unlimited.

For travelers who need larger data allotments, fixed‑data plans are available. For example, Tokyo eSIM – WAC 2025 Special 50 GB – 30 days provides 50 GB of high‑speed data for 30 days, and Travel eSIM for Asia 50 GB – 30 days offers the same amount of data. Choosing a fixed‑data plan can be more cost‑effective unless a user requires high‑speed data beyond the 4‑GB‑daily cap.

ETravelSim does not provide an eSIM for Japan that includes a phone number or SMS capability. The only Japan plans sold by ETravelSim are data‑only eSIMs, with no voice or text services. Travelers can use VoIP applications such as WhatsApp, Telegram or iMessage over the data connection to make calls and send messages without requiring a local phone number or SMS.

ETravelSim offers 15 single‑country plans that can be purchased for Japan, along with 9 multi‑country plans that include Japan among other destinations. The provider provides both fixed‑data‑cap packages, which grant a set amount of data for the full validity period, and daily‑cap packages that limit the amount of data you may use each day. Across all types, prices range from approximately $4.50 to $109.99, while data limits cover a range from 1 GB to 50 GB, depending on the plan’s validity period and coverage type.