INTERNAL STORAGE
Total space Displays the total amount of space and the available space in your phone’s internal memory in text and with a color-coded bar graph (unused space is gray). Corresponding apps and the amount of space they use is listed.
SD CARD
Total space Displays the total amount of space and the remaining available space in your memory card.
Allows you to mount or unmount your microSD card.
To format the memory card, tap MicroSD > Menu icon > Settings > Format.