USB MANAGER STATE (dumpsys usb):
{
  device_manager={
    handler={
      current_functions=MTP
      current_functions_applied=true
      screen_unlocked_functions=MTP
      screen_locked=false
      connected=true
      configured=true
      host_connected=false
      source_power=false
      sink_power=false
      usb_charging=true
      hide_usb_notification=false
      audio_accessory_connected=false
      kernel_state=CONFIGURED
    }
  }
  host_manager={
    num_connects=0
  }
  port_manager={
    is_simulation_active=false
  }
  alsa_manager={
    cards_parser=-1
  }
  settings_manager={
    user_settings={
      user_id=0
      device_attached_activities={
        activity={
          package_name=com.android.mtp
          class_name=com.android.mtp.ReceiverActivity
        }
        filters=[
          {
            vendor_id=-1
            product_id=-1
            class=255
            subclass=255
            protocol=0
            manufacturer_name=null
            product_name=null
            serial_number=null
          }
          {
            vendor_id=-1
            product_id=-1
            class=6
            subclass=1
            protocol=1
            manufacturer_name=null
            product_name=null
            serial_number=null
          }
        ]
      }
    }
    profile_group_settings={
      parent_user_id=0
    }
  }
  permissions_manager={
    user_permissions={
      user_id=0
    }
  }
}