AirPlans eSIM Data Plans for Japan

AirPlans does not provide a truly unlimited data eSIM for Japan. The plans labeled “Japan Unlimited” are capped at 1 GB for a single day or 3 GB per day for multi‑day periods; once the data limit is reached the speed is throttled to 512 kbps or 1000 kbps.

Travelers who need more data can choose from AirPlans’ fixed data plans, such as the Japan 100GB 60 days plan, the Japan 50GB 30 days plan, the Japan 32GB 20 days plan, or the Japan 20GB 30 days plan. These plans offer a set amount of high‑speed data that must be used within the specified validity period.

AirPlans sells eSIM plans for Japan that include a phone number and SMS capability. The plans range from 1GB of data for 7 days at $13.01 USD to 5GB of data for 60 days at $49.45 USD. Each plan provides a phone number with dialing code +1, allowing inbound and outbound voice calls and inbound and outbound SMS messages. The numbers are not local Japanese numbers but are international numbers that work in Japan. Travelers who need specific call or messaging features should confirm the details directly with AirPlans.

AirPlans provides 23 single‑country data plans and 13 multi‑country plans for travelers in Japan. The available plans span a price range from $1.58 to $197.92 and offer data caps between 500 MB and 100 GB. Within this selection, some plans deliver a fixed data amount for the entire validity period, while others apply a daily data cap that resets each day. This mix allows users to choose a plan that best matches their usage pattern and budget.