1. Find "Mobile Data Options"
                                                    Press Settings.
                                                                                                    
                                                
                                                    Press Mobile Service.
                                                                                                    
                                                
                                                    Press Mobile Data Options.
                                                                                                    
                                                
2. Turn data roaming on or off
                                                    Press the indicator next to "Data Roaming" to turn the function on or off.
                                                                                                    
                                                
3. Return to the home screen
                                                    Slide your finger upwards starting from the bottom of the screen to return to the home screen.
                                                                                                    
                                                
 
                                










