Ovosim eSIM Data Plans for Japan

Ovosim does not provide a truly unlimited data eSIM plan for Japan. All plans that carry the word “Unlimited” in their name still have a fixed data cap, ranging from 15GB to 150GB, with validity periods from 6 days to 31 days. Once the cap is reached, the speed would be reduced, though the exact throttled speed is not specified in the available data.

Travelers who need a larger data allowance can choose from the high‑cap fixed plans, such as the Japan Unlimited MAX – 30 Days plan that offers 150GB for 30 days at $99.84 USD, or the Japan Unlimited STANDARD – 30 Days plan that provides 90GB for 30 days at $82.22 USD. These fixed‑data options may be more cost‑effective for users who do not require unlimited usage.

Ovosim does not offer a Japan eSIM that includes a local phone number or the ability to send or receive SMS. The provider sells only data‑only plans for Japan. Travelers can still use messaging and calling services such as WhatsApp, Telegram, or iMessage over the data connection.

Ovosim provides 32 single‑country data plans that cover Japan and 40 multi‑country plans that include Japan. The plans vary in price from roughly $5.27 to $117.46 and in data allowance from 1 GB up to 150 GB, with validity periods ranging from 6 to 31 days. Some plans feature a fixed amount of data available for the entire validity, while others apply a daily data cap that recoups each day. The broad price and data ranges give travelers the flexibility to choose a plan that matches both their budget and usage needs.