[Tokyo] Japan 5G/4G Unlimited Data SIM Card (ChatGPT Supported) Pick up at Japan and Hong Kong Airports – au by KDDI

• Access high-speed internet in Japan provide by local telecom au/ KDDI
• You can conveniently pick up the SIM card at Narita, Haneda, Kansai, and Fukuoka airports in Japan.
• Enjoy unlimited high-speed 5G/4G data and up to 30GB of hotspot sharing
  
• Support ChatGPT
  
• See this product for Japan eSIM

—KDDI ranked first in Opensignal's 2025 Global Mobile Network Experience in gaming, voice applications, and network reliability experience—

Access high-speed internet in Japan with this Unlimited 4G/LTE SIM card. Use au by KDDI network, one of the most dependable network, with extensive coverage in Japan. Pick up the au SIM card at the airports in Japan/Hong Kong and enjoy the efficient service with no additional data charge (Ideal for ChatGPT/AI Tools).