用户定义的设备名称（只读）。
通常为该设备在网络上显示的“名称”。
Android: There's no API for returning device name, thus Unity will try to read "device_name" and "bluetooth_name" from secure system settings, if no value will be found, "<unknown>" string will be returned.
Will return SystemInfo.unsupportedIdentifier on platforms which don't support this property.
另请参阅：deviceModel。