Find "Call Waiting"
Press the phone icon.
Slide your finger downwards starting from the top edge of the display.
Slide your finger downwards starting from the top edge of the display.
Press Settings.
Press Call Waiting.
Turn call waiting on or off
Press the indicator next to "Call Waiting" to turn the function on or off.
Return to the home screen
Slide your finger upwards starting from the bottom edge of the display to return to the home screen.