Samsung A840 - Manual (Page 28)

16 Section 2A: Your Sprint PCS Phone: The Basics
9. Numeric Keypad: Use these keys to enter numbers,
letters, and characters.
10. Shift/Asterisk Key: Enters the asterisk [*] character for
calling features. In text entry mode, press to change
the capitalization mode.
11. Power Interface Connector: This connector is used to
plug in the charging accessories.
12. Accessory Interface Connector: This connector is used
connect any available accessory cables to your
phone.
13. Microphone: The Microphone allows the other caller
to hear you clearly when you are speaking to them.
14. Plus Code Dialing Key: Automatically dials the
international access code for the country in which
you are located (for instance, 011 for international
calls placed from the United States).
15. Space/Pound Key: Enters the pound [#] character for
calling features. In text entry mode, press to enter a
space.
16. Voice Command/Speakerphone Key: Allows you to say
commands to perform common functions supported
by your phone or turns on or off the speakerphone
during a call. Press and hold the outer key or press
and release inner key to initiate speakerphone.
17. END Key: Ends a call. Press and hold this key for a few
seconds to turn your phone on or off. While in the
main menu, it returns the phone to standby mode
and cancels your input. When you receive an
incoming call, press to enter silent mode and mute
the ringer.