Help ios 10 how to backup and restore SMS respectively?

First, use itunes to make a full backup of the old Iphone.

Open Itools and take out the SMS library files backed up by the old mobile phone.

Double-click the backup file of the old mobile phone. The SMS library file is/var/mobile/library/SMS/sms.db. Export this file to your computer.

Use Itruns to make a full backup of the new mobile phone. I always restore my new mobile phone to the factory settings before making a backup. The method is as above.

Open the backup file of the new mobile phone with Itools and enter the directory /var/mobile/Library/SMS/

Replace sms.db with a local file exported from an old mobile phone.

Use itunes to restore the backup of the new mobile phone, and the SMS will be restored.