How to import all SMS messages from iphone5 into iphone6?

How to import all SMS messages from iphone5 into iphone6;

1. Connect iPhone5 to a computer with iTunes installed.

2. Open iTunes and back up all SMS messages of iphone5.

3. After the backup is completed, connect the iPhone6 to the computer with a data cable and restore it (please check whether the phone name and time have just been backed up).

4. Wait for recovery, restart and reactivation.

Advantages: 100% data recovery, even call records, information, phone calls, photos, records of all programs.

Disadvantages: it will leave fragments, but it takes up some space inexplicably.