Apple mobile phone update iOS7 Address book How to solve?

1. The best state is that you used itunes to back up your iphone data, so just restore the backup data and your newsletter will be back.

2, if you do not use itunes backup but you login to the icloud cloud, we can also use it to restore your newsletter Oh, we can use the Apple ID login icloud and then use it to restore the Address book. Specific method: On the Apple phone "set"

3, in the settings to find "ICloud", and then click "Apple ID" and then click "Login" and then in the pop-up menu we click the "Merge" button to sync the address book.

4, in order to prevent the recurrence of such problems, we can open the Sync Address Book function in icloud, click on the button can be opened.

5, of course, we can now make a backup, click "Storage and Backup"-"Backup"-"icloud cloud backup" can be, and we can use itunes Backup in the local bar.