28• Briefly press in standby mode to display a list of recent calls to and from your phone.• Press twice in standby mode to call the most recent number.• Press to pick up a waiting call. Press again to switch back to the other call.Navigation KeyUse the directional keys on the Navigation key to browse menus, sub-menus,and lists. Each directional key also acts as a shortcut to launch applications. (Formore information, refer to “Menu Navigation” on page 38..)Camera / Music Player KeyPress the Camera/Music Player key on the right side of the phone toactivate the camera built into your phone and to take pictures, or press and hold itto activate the Music Player built into your phone to play music files loaded onto anoptional microSD™ Memory Card.Display Screen IconsYour SCH-R451C phone can show you a list of all icons that appear on the top lineof the display. To access the Icon Glossary: In standby mode, press Menu ➔ Settings ➔ Phone Info ➔ Icon Glossary.BacklightsBacklights illuminate the display and the keypad. When you press any key or openthe phone, the backlights come on. They go off when no keys are pressed within aperiod of time set in the Backlight menu.Note: During a phone call, the display backlight dims after 10 seconds and turns off after 30seconds to conserve battery power, regardless of the Backlight setting.For more information, refer to “Display Settings” on page 44..OK