Why am I unable to get a good signal even within the docomo service area?
【Reason 1】Even within the service are…
FAQ Category JB Series
How can I check if the area I want to use has signal?
Our company uses the services of Japan&…
docomo’s System Maintenance Time
🅰️Every Tuesday from 22:…
Why is it better to choose docomo products for prepaid cards?
The prepaid card uses a 4G/LTE mobile n…
Is the speed of a physical SIM card faster than an eSIM?
The signal strength is mainly affected …
What sizes are there for SIM cards?
Both JB SIM card and JB voice SIM are 3…
How many GB of a product should I purchase?
🅰️ Please refer to the c…
How to check my mobile data usage？
■ iOS device 🌸View Used Mobile …