How to set the group classification for iphone Address Book?

1. First, log in to www.icloud.com with your account (provided that your mobile phone must turn on the cloud storage function and select icloud in the mobile phone settings).

2. Click the address book icon.

3. The+sign can add a group editing icon, and delete and modify the name.

4. Drag the contact to be classified directly into the group to be classified, and click Refresh in the settings to automatically synchronize with iphone.