Find "Software update"
                                                    Slide your finger down the display starting from the top edge of your phone.
Press the settings icon.
                                                Press the settings icon.

                                                    Press the More tab.
                                                                                                    
                                                
                                                    Press About device.
                                                                                                    
                                                
                                                    Press Software update.
                                                                                                    
                                                
Update phone software
                                                    Press Update.
If a new software version is available, it's displayed.
Follow the instructions on the display to update your phone's software.
                                                If a new software version is available, it's displayed.
Follow the instructions on the display to update your phone's software.
