The data packet of the navigation software that comes with the mobile phone can be deleted, but after deletion, the navigation will display the missing data packet. You can use pea pods to save the navigation program, then guide the data packet to the computer, then restore the factory settings of the mobile phone, then put the package back into the memory of the mobile phone, and then restore the program of your mobile phone. This is a slimming method, I hope it will be useful to you!