From a Home screen, navigate: Apps icon > Settings > Storage.
From the Device storage section, select the name of the folder(s) containing the file(s) to move to the SD / Memory Card (e.g., Images, Videos, etc.).
Press and hold down the desired folder to copy or move.
Selected when a check mark is present.
If an option is unavailable (grayed out), that media type is not currently stored within the internal storage.
Tap the Menu icon (upper-right) then tap Select all to select all folders.
Select 'Copy to...' or 'Move to...'
Tap SD / Memory Card.
Tap 'Copy' or 'Move'.
The option depends on the previous option chosen.