ケーブルスマホマイページアプリ is a free utility and tools app developed by Japan Digital Serve Corporation. This app is designed specifically for cable TV subscribers and offers a range of useful features. With this app, users can easily check their data usage for the current month and even view their data usage from the previous day. The app also provides a monthly call history, allowing users to keep track of their outgoing calls. Additionally, users can access important notifications from their cable TV provider directly within the app. One of the standout features of this app is the ability to switch communication speeds in order to conserve data. However, it's important to note that enabling the low-speed communication mode will result in slower internet speeds.

Please note that this app is exclusively for cable TV subscribers and requires a separate application process with the cable TV provider. The terms and conditions for using this app are determined by the cable TV provider and Japan Digital Serve Corporation holds no responsibility for any issues or inconveniences related to the app's usage or availability. It is also worth mentioning that this app is only compatible with IIJ network connections and may not function properly on all devices.