Originally Posted by dennyduke If you just need one, you can copy it and email to yourself.
Otherwise need some unapproved 3rd party software to read them from your backup file. If haven't had time to back up your iPhone before the deletion, there are also two methods for you to retrieve deleted messages of iPhone:
1. Recover the text messages directly using a third party software;
2. Recover the text messages under DFU mode.
Read more: http://www.recovery-ipad.com