KDDI and JR East expand free data top-ups to 83 stations for Japan SIM users

KDDI and JR East will expand the povo Data Oasis service for Japan SIM users starting June 9, 2026, adding more stations and bringing the total to 83. The update gives inbound travelers another way to get free mobile data at JR East-area stations and through Welcome Suica Mobile before and after arriving in Japan.

Why it matters: - The expansion gives international visitors more places to get free mobile data while traveling in Japan. - Japan SIM users can use the service to support navigation, transit use, sightseeing and online searches without relying only on paid data plans. - The broader station coverage strengthens the link between rail travel and mobile connectivity for inbound travelers.

What happened: - KDDI and East Japan Railway Company announced that povo Data Oasis access for Japan SIM users will expand from June 9, 2026. - The service will be available at 83 stations in total, mainly in JR East service areas. - Japan SIM can also be purchased through a dedicated link inside Welcome Suica Mobile, JR East’s app for international visitors.

The details: - povo Data Oasis gives povo2.0 users free mobile data when they access a dedicated website from their smartphones at designated locations. - Japan SIM users receive 0.5GB per day at eligible stations. - The monthly cap is 5GB, or 10 redemptions in total. - Each redemption is valid for 24 hours. - The availability period began Dec. 11, 2025, and the end date has not been announced. - Eligible stations include major hubs such as Tokyo, Shinjuku, Shibuya, Shinagawa, Ueno, Yokohama, Narita Airport Terminal 1 and Narita Airport Terminal 2·3. - The list also includes stations across popular travel areas such as Akihabara, Asakusa-bashi, Harajuku, Ikebukuro, Kamakura, Karuizawa, Nagano, Nikkō, Sendai and Yoyogi. - GALA Yuzawa Station is generally open only when Shinkansen service is running to the station. - Users receive data by visiting the dedicated website from the corresponding station. - KDDI says the Japan SIM service runs on the au network and offers high-speed 5G connectivity. - Japan SIM includes 10 topping plans, including fixed-data and unlimited-data options.

Between the lines: - The rollout reflects how Japanese rail operators and mobile services are bundling travel and connectivity for inbound tourism. - The station-based model is practical for visitors because it places data access near transit points they are already using. - The partnership also helps JR East’s Welcome Suica Mobile app serve as a gateway for more than just transit payments.

What's next: - KDDI and JR East said they will continue working to improve the travel experience for visitors to Japan. - The end date for the expanded availability period has not been announced.

The bottom line: - Japan SIM users now have more JR East stations where they can pick up free data, making it easier to stay connected while moving around Japan.