As for memory, there is a saying that deleting an application directly from the iPhone desktop cannot be completely deleted, and there are still residual cached data. Only by deleting the application from the iPhone Settings-Storage Space can it be completely deleted. After deleting an application, you can find that the data with reduced "used" storage space is almost the same as the data occupied by the deleted application. Interested friends can slim down their mobile phones.

Some cached iPhone will be cleaned automatically when needed. When the storage space of the device is insufficient and we need to download larger application software, the iPhone will automatically clear the temporary files in the application so that we can download new applications.