Display
•Brightness: Adjust the brightness. Checking Automatic brightness lets the smartphone automatically adjust brightness to suit current light levels. Lowering the brightness or letting the phone lower it under low light conditions helps to conserve battery power.
•Wallpaper: Select a wallpaper for the Home screen.
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•Sleep: Set the length of time that the smartphone waits before locking itself.
•Font size: Select a default font size for the interface.
•Roaming banner: Set to display the roaming text when roaming abroad.
Storage
Check how much of the internal memory and memory card is occupied.
•Mount SD card: Mount the memory card to use it.
•Unmount SD card: Unmount the memory card to erase or remove it from the smartphone.
•Erase SD card: Delete all the data on the memory card.
