17■ Close an applicationTo close an application or a folder, select Back and Exit as many times as needed to return tothe standby mode, or select Options > Exit.Leaving applications running in the background increases the demand on battery power andreduces the battery life.■ Volume controlTo adjust the earpiece or loudspeaker volume during a call or when listening to an audio file,press the volume keys. To activate or deactivate the loudspeaker during a call, select Loudsp.or Handset.Warning: Do not hold the device near your ear when the loudspeaker is in use,because the volume may be extremely loud.■ Display rotationYour device has an accelerometer that senses the movement of the device.To rotate the display content automatically when you turn the device on its left side orback to a vertical position, select > Settings > Phone sett. > General > Sensor settings >Sensors On. Some applications and features may not support rotating the display content.■ Turning controlTo be able to silence calls and snooze alarms by turning the device so that the displayfaces down, select > Settings > Phone sett. > General > Sensor settings > Sensors > On.Select Turning control, and mark Silencing calls and Snoozing alarms.■ Keypad lock (keyguard)To lock the keypad when you close the slide, select > Settings > Phone sett. > General >Slide handling > Keyguard activation > Change > On when closing slide.To set the device to automatically lock the keypad after a certain time, select > Settings >Phone sett. > General > Security > Phone and SIM card > Keypad autolock period > Userdefined and the desired time.Opening the slide unlocks the keypad. To unlock the keypad when the slide is closed, pressthe left selection key and select OK within 1.5 seconds.When the device or keypad is locked, calls may be possible to the official emergency numberprogrammed into your device.