JB Series
Tourism Study Business
Working Holiday
Japan’s largest 4G/LTE
mobile network
docomo
Personal Hotspot available
JB eSIM
Prepaid Data eSIM
4–91 days
No contract・No ID
No shipping・send by email
No physical SIM required
Recharge/extend available
JB SIM Card
Prepaid Data SIM Card
4–91 days
No contract・No ID
Free shipping in Japan/Taiwan
Recharge/extend available*
*16/31 unlimited Unavailable
JB Voice SIM
has a Japan phone number
Can make calls
Monthly data 1/5/10/50GB
SMS available – Receive free
Passport verification required
Free shipping within Japan
📢 Notice of Temporary System Maintenance by NTT Docomo
Temporary Maintenance Schedule (Japan Time):
① April 17, 2025, from 10:00 PM to April 18, 2025, 9:00 AM (Affected Services: Physical SIM & eSIM)
② April 28, 2025, from 10:00 PM to April 29, 2025, 9:00 AM (Affected Services: Physical SIM & eSIM)
※ Pre-activated eSIMs (Black eSIM) will not be affected.
Functions Temporarily Unavailable:
New line activation for physical SIMs will not be available
Activation codes for eSIMs will not be issued
Reason:
Due to NTT DOCOMO’s system maintenance
Notes:
- Physical SIMs that request activation during the maintenance will be activated sequentially after the maintenance ends.
- Activation codes requested during the maintenance will be issued sequentially after the maintenance ends.
- SIM cards that have already been activated and are in use will not be affected.
- Activation codes that have already been issued can still be installed and used during the maintenance period.
🙇♀️ We apologize for the inconvenience and thank you for your understanding.