Settings 191Unmounting an SD Card1. From the Settings screen, touch Storage.2. Touch Unmount SD card.3. At the prompt, select OK to safely unmount thememory card.4. Remove the SD card from the slot.Note: Unmounting an SD card will stop some applicationsfrom functioning. Applications may not be available untilyou mount the SD card again.Formatting an SD CardWhen formatting an SD card you will want to backup yourmusic and photo files that are stored on the card becauseformatting the SD card deletes all the stored data.1. From the Settings screen, touch Storage.2. Touch Format SD card and then touch Format SD cardagain on the warning screen.3. Touch Delete all.Note: The Format SD card option is only available when yourSD card is mounted.SecurityThe Security settings allow you to determine the securitylevel for your device.EncryptionTo require a numeric PIN or password to decrypt your deviceeach time you power it on or encrypt the data on your SDcard each time it is connected:Note: You must first set up a screen lock type, if you have notalready done so. For more information, refer to “ScreenLock” on page 169.1. From the Settings screen, touch Security.2. Touch Encrypt device. For more information, read thedisplayed help screen.3. Touch Encrypt external SD card to enable the encryptionon SD card data that requires a password be enteredeach time the microSD card is connected.Tip: Make sure your battery is charged more than 80 percent.Encryption may take an hour or more.