"COMST" serves mobile data communications in Japan.
This application needs to be used in conjunction with the "COMST" SIM card. After purchasing the SIM card, installing this application makes it easy to open data communication and charge it continuously.
When you install the application, first do the procedure necessary for opening the data communication. By reading the barcode of the SIM card, we support the opening procedure of data communication.
You can check the data usage at any time, you can know the remaining data amount and expiration date.
Continuous charge procedure
We will proceed with easy continuation.
COMST will inform you of important information and the end of data usage.
■ About COMST (Details)