How to delete Apple 6 contacts and how to delete Apple 6 address books in batches?

The operation method of deleting contacts in batch in Apple system is as follows:

1, connecting iphone and PC;

2. Open itunes, confirm iTunes connection and read iphone information;

3. At the top of 3.itunes: In the "Summary"/"Information"/"Application"/"Ringtone" column ..., click on the "Information" column;

4. In the option bar in front of "Synchronize Address Book with outlook", generally check "√" and click Cancel "√";

5. A dialog box pops up, prompting, "iTunes will no longer sync contacts to iphone. Do you want iTunes to delete the address book that was previously synchronized to the iphone? " ;

6. At this time, there are two option buttons at the bottom of the dialog box: "Delete Address Book" and "Do not delete Address Book";

7. Click the Delete Address Book button;

8. At this time, in the option bar in front of "Synchronize Address Book with outlook", do not check the "small tick";

9. Click the "Apply" button in the lower right corner;

10, and finally click the "Sync" button.