LG 55LN575V User Manual page 146

✎ You can purchase apps via PC or TV, but you must use the TV to install and
run them.
✎ If you have insufficient storage space on your TV, you can download apps
to a USB storage device connected through the TV's terminal for USB apps.
Apps stored on USB can be run / deleted / moved from the
✎ A USB Memory Stick containing apps cannot be used for other data. (For
USB Apps Only)
My Apps screen.