Japan 5G/4G Unlimited Data SIM Card (ChatGPT Supported) Pick up at Japan 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—
Package Options
What You Can Expect
SIM Card Specifications
| Data Usage Specifications | Unlimited data |
| Transmission Specifications | 5G/4G |
| Signal Coverage Area | Japan |
| Mobile Carrier | au/ KDDI |
| Supported Sizes | Nano SIM |
| Hotspot Sharing | Available |
| Supported Frequencies(4G) | B1（2100 MHz）, B18（800 MHz）, B11 (1500 MHz), B28（700 APT）, B26（850 MHz） |
| Supported Frequencies(5G) | n5（850 MHz）, n26（850 MHz）, n1（2100 MHz）, n3（1800 MHz）, n78（TD 3500）, n77（TD 3700）, n258（26 GHz）, n261（28 GHz） |
| Top-Up Availability | Top-up unavailable |
| Excludes | Voice calls, Texts |
| Not Supported | SIM-locked device, Mobile hotspot |
| Reminders | The period of validity is calculated as a natural day, from SIM card activated time to 23:59 of the day is regarded as the first day Hotspot sharing traffic for various plans: 3GB total in 4 days, 6GB total in 7 days, 9GB total in 10 days, 15GB total in 15 days, 30GB total in 31 days |
| Network Type | Local |
Purchase Notice
To use the SIM card in Japan, please check the following:
1. Unlocked (SIM-free) Device
- Your device has to be unlocked (SIM-free). To check if your device is unlocked, please contact your cell phone company
2. Network and device compatibility
- Please check the list of tested devices
Includes/Excludes
Reminders
Before booking, please ensure your mobile device is compatible with the local network service provider. No refunds or cancellations can be made due to SIM compatibility issues
Please check the contents of your package before leaving the counter; the local agency will not be responsible once the package has left the counter
The quality of communication may be influenced by external factors such as surrounding landforms (e.g., mountains), weather, obstruction by buildings, the number of users, or location
This SIM card is only for data. No calls, texts.
Once activated, the SIM Card is to be used within the validity period and cannot be recharged, topped up, or used again
Pickup Point
Narita International Airport (NRT) T1
7:00 am to one hour after the flight arrival
Narita International Airport (NRT) T2
7:00 am to one hour after the flight arrival
Tokyo Haneda International Airport (HND) T3
- Operating every day
- The counter is closed from 1:00 am–4:00 am
Kansai International Airport (KIX) -
Monday 07:00 - 22:30
Tuesday 07:00 - 22:30
Wednesday 07:00 - 22:30
Thursday 07:00 - 22:30
Friday 07:00 - 22:30
Saturday 07:00 - 22:30
Sunday 07:00 - 22:30
Fukuoka Airport (FUK) T1
Monday 07:00 - 21:00
Tuesday 07:00 - 21:00
Wednesday 07:00 - 21:00
Thursday 07:00 - 21:00
Friday 07:00 - 21:00
Saturday 07:00 - 21:00
Sunday 07:00 - 21:00
How to Use
－SIM Card Activation－
- Please follow the step-by-step guide in the setup manual that comes in with the SIM card package
- If you cannot connect to the network after inserting your SIM. If the network speed is slow or if there are other connection problems occurring simultaneously, such as the device is not compatible with our sim card or if you fail to set up the APN setting, please contact customer service
How to Use Your Voucher
- Please present the e-voucher on-site
Voucher Redemption Period
- The voucher must be redeemed on the selected date and within operating hours; Invalid after expiration
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