新スマホ故障診断 is a lifestyle application developed by NTT DOCOMO for Android devices. The app allows users to diagnose potential issues with their smartphones by selecting symptoms or letting the app automatically check for faults in areas such as communication status, software versions, storage, and sensors. Based on the diagnosis results, the app provides guidance on improvement methods and various procedures like repair, replacement, or model change.

With a focus on various diagnostic items including sensors, battery, network connections, and more, users can check the health of their device comprehensively. The app also offers guidance on repairs and replacements based on the diagnosis. It is recommended to have Android 6.0 or above to use this app efficiently.