Storage
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 are displayed.
SD CARD
Total space Displays the total amount of space and the remaining available space in your memory card.
Mount/Unmount SD card Allows you to mount or unmount your microSD card.
Erase SD card Allows you to erase all of the data on your microSD card.
NOTE
Tap the Options icon 
to change the units (MB or
GB) or access USB PC connection.