 
                                TCL 306
                                                Android 12.0
                                            
                                                                            1. Find "Additional settings"
                                                    Press the call icon.
                                                                                                    
                                                
                                                    Press the menu icon.
                                                                                                    
                                                
                                                    Press Settings.
                                                                                                    
                                                
                                                    Press Calling accounts.
                                                                                                    
                                                
                                                    Press the name of the SIM.
                                                                                                    
                                                
                                                    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.
                                                                                                    
                                                




















