Storage
DEVICE
Displays the total amount of space used and the available space in your phone’s memory in text and as a bar graph (unused space is gray). Tap Internal storage to see your apps and the amount of space they use.
EXTERNAL
SD card Displays the amount of space used and the total available space in your memory card. Tap SD card to view the data stored on it.
Allows you to eject (unmount) your microSD card.
To format the memory card, tap SD card > Options > Storage settings > Format.