Samsung SGH-T879 User Manual Ver.lg2_f2 (English(north America)) - Page 35

12. Proximity Sensor detects how close an object is to the surface of the screen. This is typically used to detect when your face is pressed up against the screen, such as during a phone call. - While talking on the phone, the sensor detects talk activity and locks the keypad to prevent accidental key presses. 13. 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. 14. Headset jack allows you to connect a hands-free headset so you can listen to music. Back View The following illustration shows the external elements of your device: 1. S Pen is a built-in stylus that allows you to perform various functions. For more information, refer to "S Pen" on page 31. 2. External speaker allows you to hear ringers, music, and other sounds offered by your phone. 3. microSD Card Slot (internal) allows you to use a microSD card to expand the memory of your device. 12 5 4 3 4. Flash is used to take photos in low-light conditions. 5. Camera lens is used to take photos. Understanding Your Device 30