LimitSIM eSIM Data Plans for Japan

LimitSIM does not provide an unlimited data eSIM for Japan. All of its Japan‑specific offerings have a defined data allowance that must be used within a set validity period.

Travelers who need high data volumes can choose from LimitSIM’s fixed data plans. For example, the Japan 50GB 30‑day plan offers 50GB of 5G data for 30 days, and the Japan 50GB 180‑day plan provides the same 50GB amount for 180 days. Another alternative is the Japan 30‑day “unlim” plan, which lists 65GB but applies a Fair‑Usage Policy that limits speeds after a certain amount of data is used, capping overall consumption to 70GB. Fixed data plans generally offer more predictable costs for most users unless their data usage far exceeds the available allowance.

LimitSIM does not provide a Japan eSIM that includes a phone number or SMS capability. The provider offers only data‑only plans for travelers visiting Japan.

Travelers who need to make voice calls or send text messages can use popular VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection. However, some destinations may block or restrict access to specific apps or VoIP services, so it is advisable to confirm that the applications you rely on are available in Japan before purchasing a plan.

LimitSIM provides 14 single‑country plans that cover Japan and 59 multi‑country plans that also include Japan. The single‑country plans vary in price from about USD 0.61 to USD 183.34 and in data cap from 100 MB up to 80 GB, with validity periods ranging from 1 to 365 days. Multi‑country plans share a similar price and data range, though the exact distribution within each plan can differ. Some plans impose a speed limit of 5000 kbps or offer a reduced speed option of 512 kbps.