Worked for me - Permanent copy of Texts
This program worked for me. I was able to install it on my computer and do the backup. It created a nice PDF and text document with my previous text messages. I wanted to save my old text messages, because I needed to restore my iPhone, so I could use it as an iPod. The developer responded to my emails regarding compatibility with an older iPhone 3.
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Export Messages - Save Print Backup Recover Text SMS iMessages