There are many iPhone users and for some reasons you would lost your iPhone text messages or contacts unexpectedly.
But if you have a itunes backup file, we can still recover them by extracting from itunes backup file.
And I found iphone backup extractor is really helpful. And it's very easy to use, we just need 2 simple steps to finish the work.
If you need, we can also use it to recover other kinds of files in the same way.
Know How to Recover iPhone Messages from iTunes backup
http://www.iphone-text-messages-extractor.com/