Samsung SGH-T769 User Manual Ver.uvlb4_f7 (English(north America)) - Page 27

11. Light Sensor lets you use the ambient light level to adjust the screen brightness/contrast. This sensor decreases screen brightness in dim light. • In a bright light condition (outdoors), the sensors cause the device to increase the brightness and contrast for better viewing. • In dim light conditions, the device increases the screen brightness to compensate. 12. Volume key allows you to adjust the ringer volume in standby mode (with the phone open) or adjust the voice volume during a call. When receiving an incoming call: • Pressing the volume key down mutes the ring tone. 13. microSD Card Slot (internal) allows you use a microSD card to expand the memory of your phone. 14. Power/End key ends a call or switches the phone off and on. Press and hold for two seconds to turn off Silent mode, Airplane mode, or to turn the phone on or off. 15. Headset jack allows you to connect a hands-free headset so you can listen to music. Back View of Your Phone The following illustration shows the external elements of your phone: 1 23 1. Flash is used to take photos in low-light conditions. 2. Camera lens is used to take photos. 3. External speaker allows you to hear ringers, music, and other sounds offered by your phone. Understanding Your Device 23