AeroSims eSIM Data Plans for Japan

AeroSims does not provide a truly unlimited data eSIM for Japan. The plans that carry the “Unlimited” name actually offer 5GB of high‑speed data per day, after which the speed drops to 384 kbps, so the data is still limited.

Customers who need a larger data allowance can choose one of AeroSims’ fixed data plans. For example, the Tokyo 50 GB plan is valid for 30 days, and the Tokyo 20 GB plan is valid for 30 days. These plans give a single, defined data amount that can be used at full speed until the data depletes, making them a more cost‑effective option for most travelers.

AeroSims does not offer any Japan eSIM that includes a phone number or SMS capability. The provider only sells data‑only eSIM plans for Japan. Travelers who need voice or text functionality can use VoIP applications such as WhatsApp, Telegram, or iMessage over the data connection, but they should confirm that the apps they rely on are accessible in Japan before purchasing an eSIM.

AeroSims offers 13 single‑country data plans that cover Japan and 27 multi‑country plans that include Japan in their coverage. The plans vary in type, with some providing a fixed data amount for the entire validity period while others offer a daily data cap that resets each day. Across all plans the price ranges from about $3.90 to $188.58, and the data caps span from 3 GB up to 50 GB, giving travelers a broad selection of options to suit different usage needs.