1. Find "Additional settings"
                                                    Slide your finger upwards on the screen.
                                                                                                    
                                                
                                                    Press Phone.
                                                                                                    
                                                
                                                    Press the menu icon.
                                                                                                    
                                                
                                                    Press Settings.
                                                                                                    
                                                
                                                    Press Calls.
                                                                                                    
                                                
                                                    Press Additional settings.
                                                                                                    
                                                
2. Turn call waiting on or off
                                                    Press the indicator next to "Call waiting" to turn the function on or off.
                                                                                                    
                                                
3. Return to the home screen
                                                    Press the Home key to return to the home screen.
                                                                                                    
                                                
                                



















