You can reset the app settings or network settings to their standard values or do a complete factory reset. If you do a factory reset, you will delete profiles, keys, user data and other customised settings.
Note
Only the owner can reset the network settings and do a factory reset.
Press the car symbol 
in the bottom bar and go to System.
in the bottom bar and go to System.Go to Reset options.
Select what you want to reset and follow the instructions in the centre display.