You can access text messages backup files in iPhone and these files can be utilized in many ways. This is very simple and easy process to access SMS backup files. Here is the guideline which will help you to access backup files.
First you will go to iPhone backup location which is located at ~/Library/Application Support/MobileSync/Backup/. Here you will find a file from directory, open directory and go to ‘3d0d7e5fb2ce288813306e4d4636395e047a3d28’, it will show you the file which have .mddata or .mdbackup extension.
When you have this file, copy it and paste it to some place where you can access it easily. Now you will have to download an application which will help you in opening and reading this file. This file is SQLite database file and you need to install an application for opening it.
When you install SQLite management app, you will launch the program and then open up the saved SQLite SMS database file. Now it will show you all the text messages.
You can read all the messages, and if you want to have text messages of a specific number, you can access that as well.