How to clean up the memory occupied by Apple's mobile phone calendar?

There is an icloud click on email, address book, calendar and account item to close the calendar under Apple's mobile phone settings. He will ask, "Do you want to delete the records on this machine?" Click "Yes" to delete, and the occupied memory can be cleared.

The age of Apple's mobile phone calendar is calculated electronically, and there is no age.

1. The mobile calendar provides the query of Gregorian calendar and Gregorian holidays.

2. Provide the lunar calendar and lunar holidays and 24 solar terms query.

3. Provide folk information about Huang Daoji.