KYOCERA Corporation's Qua phone 取扱説明書 is a user manual app designed specifically for Qua phone users. The app comes with a table of contents, a search function, and an index that enables users to quickly locate and access the information they need. The app not only provides users with the ability to read the instructions but also allows them to launch the device settings directly from the app, making it more convenient for users to use their Qua phone.

It is worth noting that this app is only available for Qua phone users, and users of other devices cannot use it. Additionally, downloading and updating the application may incur extra packet communication fees, so KYOCERA Corporation strongly recommends users to have a flat-rate packet communication fee or discount service. However, if you download this app using Wi-Fi, you will not incur any packet communication fees.