■Main features
・If you have a symptom that suggests something is wrong with your smartphone, you can select the symptom and diagnose whether or not there is a malfunction.
Even if you do not select it, it will automatically diagnose whether there is a failure in the communication status, software version, storage, sensor, etc.
・Based on the diagnosis results, we will guide you through various procedures such as improvement methods and repair/replacement/model changes.

■Diagnosis items
・Various sensors (illuminance, gyroscope, acceleration, magnetism, atmospheric pressure, temperature, humidity, proximity, fingerprint)
・Battery, charging
・Mobile network connection
・Wi-Fi, Bluetooth chipset
・Location information service
・Read/write internal storage
・Screen related (touch screen, display)
・Call related (making and receiving calls, speaker, earpiece)
・Earphone jack, earphone, microphone
·vibrator
・Various buttons (power, volume, home, silent switch)
・Out camera (photo, video), in camera (photo, video)
·flash
·software version

■Notes
- Compatible OS is Android 7.0 or higher.
・Packet communication charges apply for downloading and updating this software.
・Confirmation of operating procedures, confirmation and implementation of app updates, implementation of diagnostics involving communication,
Alternatively, packet communication charges will apply when using this app to check the version, etc.
・By logging into your d account, you can apply for "Mobile Phone Protection Service" and "smart Anshin Protection".
We can suggest repairs or replacements depending on your subscription status.　
・We recommend updating the software version of your smartphone or tablet that uses the app to the latest version.
- Applicable models are only Docomo models.
*Please check Docomo's official website for a list of applicable models.
(https://www.docomo.ne.jp/service/diagnosis/compatible_model.html?icid=CRP_SER_diagnosis_to_CRP_SER_diagnosis_compatible_model&d=2&p=1,3)