EtravelSIM eSIM Data Plans for Japan

EtravelSIM does not provide a plan with truly unlimited high‑speed data for Japan. The plans that use the term “Unlimited” actually contain a fixed data allowance, such as 100GB for up to 30 days, after which the speed is throttled. Similarly, the “Truly Unlimited” options give 4 GB per day and reduce speed to 128 kbps once the daily limit is reached.

For travelers who need a larger amount of data without speed reductions, EtravelSIM offers fixed‑data alternatives. For example, a 100 GB plan is available for 7, 15, or 30 days, and a 50 GB plan is offered for 30 days. Choosing one of these fixed‑data plans can be more cost effective for heavy data users, as it avoids the reduced‑speed penalty that applies after the specified data cap.

EtravelSIM does not offer any eSIM plan for Japan that provides a phone number or SMS capability. The provider currently offers only data‑only eSIM plans for Japan. Travelers who need voice or messaging can use VoIP services such as WhatsApp, Telegram, or iMessage over the data connection.

EtravelSIM offers 16 single‑country plans that cover Japan and an additional 9 multi‑country plans that include Japan, giving travelers a total of 25 distinct data options.
The single‑country plans provide between 1 GB and 100 GB of data and are priced from $4.50 to $109.99.
Multi‑country plans have similar data ranges and price points but grant access to several destinations with one subscription.
Some plans use a fixed data cap, delivering the full amount for the validity period, while others impose a daily data limit, capping data usage each day for the duration of the plan.