ETravelSim eSIM Data Plans for Japan

ETravelSim does not provide a truly unlimited data eSIM for Japan. The plans that carry “Unlimited” in their names allow 4 GB of high‑speed data per day; once that amount is reached, the speed is throttled to 128 kbps. Travelers who need extensive data can choose from fixed‑data options instead. For example, the Tokyo eSIM – WAC 2025 Special 50 GB plan offers 50 GB for 30 days, and the Travel eSIM for Asia 50 GB also provides a 50 GB allowance for 30 days. These fixed plans give users a larger data pool without the speed reduction that comes with the so‑called unlimited plans.

ETravelSim does not offer any Japan eSIM plans that provide a local phone number or SMS capability. The only available Japan eSIMs from this provider are data‑only plans.

You can still use popular VoIP apps such as WhatsApp, Telegram and iMessage over the data connection to make calls and send messages without a phone number or SMS feature.

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.