"My IIJmio" is a dedicated application for customers of the IIJmio Mobile Service Giga Plan. The app allows users to check their remaining data volume, view subscription details, and toggle high-speed communication on and off. Users can also check their data usage through a graph that displays daily and monthly data usage for the past five months. Additionally, the app allows for individual display switching, which is useful for users who have multiple lines shared by different individuals on the same contract. To use the My IIJmio app, users need to consent to the Terms of License provided by IIJmio. The app is available in Japanese language. @iijmio is the official Twitter account of IIJmio, where users can find useful information about the IIJmio Service. In summary, the My IIJmio app is a convenient tool for customers of the IIJmio Mobile Service Giga Plan. It provides features such as checking remaining data volume, monitoring data usage, and viewing subscription details. The app also allows for individual display switching, making it easier for users with shared lines to access their specific usage information.