1. From the home screen, swipe up to access the Apps tray then select the
Downloads app.
2. Select the
Menu icon, then select the device.
Note: If you are prompted with a permissions notification, select ALLOW. 
3. Navigate to and select and hold the desired file(s), then select the
Menu icon. Select Copy to.... 
4. Select the
Menu icon, then select SD card. Navigate to the desired folder, then select COPY. 