Restoring your device to default settings helps when the device crashes and resets itself or when apps freeze/hang or reset the device.
Performing these steps resets all system settings (e.g., default search engine, homepage, app permissions, etc.) back to their default values. Personal data such as downloaded apps and media (pictures, videos, music) are not affected.
Navigate: Apps icon > Settings >Advanced.
From the Reset settings section, tap or click Restore settings to their original defaults.