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Connecting to Mobile Networks.
Sound
Adjust volumes (see Personalizing – Adjusting Volumes),
toggle sound and mute (see Switching to Silent Mode), set up
ringtone and notification sound (see Personalizing – Changing
Ringtone and Notification Sound), and select system sounds
(refer to Turning On/Off Touch Sounds).
Display
Brightness: Set the brightness of the display.
Wallpaper: Select a background image for the Home
Screen.
Auto-rotate screen: Rotate the screen display as you
rotate the phone.
Sleep: Set the length of time of inactivity before the screen
turns off.
Daydream: Turn on or off daydream.
Font size: Set the font size of the text on the screen.
Pulse notification light: Flash the LED light to notify you of
missed calls, new messages, and other events.
Touch key light duration: Touch to set the duration of the
backlight.